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The forced oxidation of sulfite ions was conducted to obtain high-quality gypsum in the flue gas desulfurization system. The effects of formic, lactic, acrylic, acetic, propionic, and hexanoic acids added to calcium-based slurry on sulfite oxidation were investigated in this study. Sulfite oxidation was inhibited when the pKa value of organic acids was small or the carbon chain was long. In the identical slurry pH 6, the SO42- fractions of slurries with formic and lactic acids, which have the smallest pKa values, were lower than half that of the additive-free slurry. The addition of hexanoic acid with the longest carbon chain showed a similar SO42- fraction to that of additive-free slurry. These results indicate that the inhibitory effect on sulfite oxidation is more expressed by the acidity of organic acids. The SO42- fraction in the slurry affects the growth and quality of gypsum crystals. The slurry with acetic acid presented the highest SO42- fraction and resulted in the formation of high-quality gypsum crystals. The findings of this study can contribute to the selection of organic acid additives with high desulfurization efficiency and the production of high-quality gypsum. [ABSTRACT FROM AUTHOR]

Metabolomic research involves the comprehensive analysis of metabolites in biological samples and has many applications. Gas chromatography-mass spectrometry (GC-MS) is an established and widely used approach for metabolic profiling. However, sample preparation and metabolite derivatization are time-consuming, and derivatization options are limited. We propose gas–solid phase derivatization (GSPD) as a novel sampling and derivatization method that uses a silica monolith substrate and gaseous derivatization reagents for metabolomics using GC-MS. We developed a method to measure the organic acids and sugar phosphates responsible for glycolysis and the tricarboxylic acid (TCA) cycle. GSPD simplifies the sample preparation and can be applied to derivatization reactions that are difficult to perform in solution owing to solvent limitations. The developed method was applied to human plasma and tomato pulp and was shown to have a higher detection performance than the conventional method. This study provides a strategy to simplify sample preparation and expand derivatization options for GC-MS-based metabolomics. [Display omitted] • Gas–solid phase derivatization (GSPD) as a novel gas-phase derivatization for GC-MS-based metabolomics was proposed. • GSPD methods for organic acids and sugar phosphates were developed. • The GSPD was applied to human plasma and tomato pulp. • The GSPD was shown to have a higher detection performance than the conventional method. [ABSTRACT FROM AUTHOR]

Agricultural productivity is significantly hindered by the limited availability of phosphorus in acidic soils due to the presence of aluminum and iron phosphates. Soil liming is commonly employed to enhance soil fertility. However, modifying the pH might also impact the interactions involving existing soil organic matter, leading to changes in the effective concentrations of competing low-molecular-weight acids (LMWOACs) participating in phosphorus adsorption. This study explored the impacts of citric, oxalic, and malic acids in acidic soils from tea cultivation regions within the Eastern Black Sea. These soils had undergone various levels of liming and were incubated for 15 months to assess their effects on phosphorus (P) adsorption in 7 acidic soils. The experimental sorption data were utilized to calculate the soil Langmuir and Freundlich adsorption parameters. In addition, the influences of organic acids and liming levels on the Freundlich and Langmuir model parameters were subjected to ANOVA analysis. The findings indicated that citric acid demonstrated the highest efficiency in diminishing phosphorus adsorption among the tested organic acids, followed by oxalic and malic acids. Three carboxyl groups (−COOH) in citric acid facilitated the formation of more complexes with adsorbed phosphorus on the soil surface. Furthermore, the 100% LR ratio of liming notably decreased phosphorus adsorption, especially in the lower end of the isotherms. Therefore, it can be concluded that the combination of LMWOACs and liming treatments could be used to overcome P deficiency in acid soils with very high P sorption ability. [ABSTRACT FROM AUTHOR]

Date fruits (Phoenixdactylifera L.), the most abundant fruits in the world are rich in essential nutrients, e.g., crude fiber, pectin, and polyphenols. Harvested dates are commonly consumed as fresh. However, not all cultivated date fruits meet the required commercial standards and large amount of date waste is produced during cultivation, picking, and the post-harvest processes. Therefore, poor-quality date fruits without any significant loss of nutritional value that are considered as date by-products are either discarded or used as animal feed. Furthermore, due to the suitable compositional properties of date fruits, the application of date waste as an inexpensive raw material for biological processes can be considered as a promising strategy to valorize poor-quality dates into value-added products such as alcohols, acids, ethanol, oil, protein, and biopolymers. In this regard, this study is aimed to review the potential applications of date waste as substrate for the production of value-added fermented bioproducts applicable in the food industry. [ABSTRACT FROM AUTHOR]

Summary Jujubes are an excellent source of sugar and nutrients, making them well‐suited for fermentation. Previous research on jujubes has primarily focused on their use in fermented beverages and fruit wines, but their potential for vinegar production has not been sufficiently explored. Therefore, this study produced jujube vinegar from jujube as raw material using microbial fermentation technology, and the changes in bioactive substances and volatile components during different fermentation stages were monitored. Results revealed that the primary organic acids in jujube vinegar were acetic acid, malic acid and lactic acid. The levels of phenolic compounds, such as epicatechin and ferulic acid, increased significantly by 3.5‐fold and 3.2‐fold, respectively, after acetic fermentation, resulting in an improvement in antioxidant activity. In addition, a total of seventy‐three volatile substances were detected in jujube vinegar, with acids accounting for 72.13% of the overall content. Isoamyl alcohol, ethyl phenylacetate, benzaldehyde and 3‐hydroxy‐2‐butanone were also the principal flavour compounds of jujube vinegar, which are the main source of its intense flavour. This study reveals the dynamic law of nutrients and flavour compounds during the fermentation process of jujube vinegar. The findings provide a theoretical reference and practical basis for the production of jujube vinegar. [ABSTRACT FROM AUTHOR]

Copyright of Science & Technology of Food Industry is the property of Science & Technology of Food Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The current study was carried out to explore the effects of lactofeed (LA) as a multi-strain probiotic and succinic acid (SA) on growth variables, gut lactic acid bacteria count, digestive enzymes, innate immune responses, antioxidant capacity, and resistance against yersinia ruckeri in rainbow trout juveniles (Oncorhynchus mykiss). Three hundred sixty healthy rainbow trout juveniles (13.21±0.41 g) were randomly divided into twelve tanks (300 L) as four experimental groups. They were fed with basal diet (Control; BD), FT1: BD + 1 g/kg LA, FT2: BD + 5 g/kg SA, and FT3: BD + 1 g/kg LA + 5 g/kg SA for eight weeks. According to the results, final weight (FW), weight gain (WG), protein efficiency rate (PER), and feed conversion rate (FCR) revealed a remarkable discrepancy compared to the control group. In addition, dietary inclusion of LA (FT1 and FT3) significantly increased the specific growth rate (SGR). Dietary supplementation of LA+SA (FT3) remarkably improved total bacteria count (TBC) and amylase activity compared to the unsupplemented group. Gut lactic acid bacteria (LAB) count and digestive protease activity in all supplemented fish were remarkably higher than in unsupplemented group. Blood immunological factors including white blood cell (WBC) count, total immunoglobulin content (Ig), and the activity of lysozyme (LYZ), alternative complement pathway (ACH50), and acid phosphatase (ACP) were significantly enhanced in the supplemented groups. Neutrophil (NEU) count, skin mucus Ig and hepatic glutathione peroxidase (GPX) increased in SA (FT2 and FT3) treatments. In addition, monocyte (MON) count and skin mucus LYZ activity were significantly elevated following feeding with the FT3 diet. Other immunological parameters of skin mucus including protease activity, alkaline phosphatase (ALP) activity, and ACH50 activity, as well as hepatic superoxide dismutase (SOD) and catalase (CAT) activities increased in fish fed with diets containing LA and/or SA. Malondialdehyde (MDA) value was remarkably decreased in all supplemented rainbow trout compared to the fish fed with BD. Disease resistance against Y. ruckeri in fish fed with supplemented diets significantly improved with respect to the results obtained in the control specimens. Overall, dietary LA+SA supplementation was beneficial to improve growth performance, gut LAB count, digestive enzyme activities, innate immune responses, antioxidant capacity, and disease resistance in rainbow trout. According to these findings, 1 g/kg LA + 5 g/kg SA is suggested for adding to rainbow trout diet. [ABSTRACT FROM AUTHOR]

As some of the richest sources of natural antioxidants, small berry fruits have attractive colors and special tastes, with recognized benefits for human health. However, sour tastes in small berry juices result in a poor flavor and low acceptance among consumers, greatly limiting their marketability. Among the most commonly used deacidification methods, chemical deacidification methods can neutralize fruit juice via the addition of a deacidification agent, while physical deacidification methods include freezing deacidification, ion-exchange resin deacidification, electrodialysis deacidification, and chitosan deacidification. All of these methods can markedly improve the pH of fruit juice, but they introduce new substances into the juice that may have an influence on its color, taste, and stability. Biological deacidification can effectively remove malic acid from fruit juice, reducing the content from 15 g/L to 3 g/L; additionally, it maintains the taste and stability of the juice. Therefore, it is widely applied for fruit juice deacidification. On this basis, some compound deacidification technologies have also emerged, but they also present problems such as high costs and complicated working procedures. This review of deacidification methods for small berry juice provides a foundation for the industrial development of such juices. [ABSTRACT FROM AUTHOR]

Magnesium fertilization positively impacts various physiological processes in plants, leading to increased yield and fruit quality. In the present study, we determined the effects of the foliar application of magnesium on the yield, fruit quality, fruit biochemical content, and enzyme activity of tomato plants. The study was performed in a plastic greenhouse. The study evaluated magnesium sulfate application through drip irrigation at a single dose of 0.005 kg m2 and foliar application at rates of 0%, 0.25%, 0.5%, and 0.75%. As a consequence, the highest average fruit weight was obtained with the foliar application of 0.50% Mg. In terms of the fruit color's a* value, the best results were again obtained with the application of 0.50% Mg. Mg applications proportionally increased the leaf chlorophyll content. Similarly, the highest leaf Mg content, the leaf relative water content, the fruits' malic acid content, and the best fruit juice pH value were determined with the application of 0.75%. On the other hand, the application of 0.25% Mg produced the best results on the leaves' K, Ca, and Na content, as well as in the fruits' ascorbic acid content. Significant differences were not found in terms of the effects of the treatments on antioxidant activity, total protein amount, and enzyme activity. The application of 0.50% Mg contributed to the fruit color; 0.75% Mg application contributed to the chlorophyll, pH, and malic acid content; and the application of 0.25% Mg contributed to an increase in ascorbic acid. In conclusion, for greenhouse tomato production, a foliar application of 0.50% Mg is recommended to achieve larger, red-colored fruits. A 0.75% Mg application is suggested for increasing the chlorophyll content, lowering fruit juice pH, and enhancing malic acid content in fruits. A 0.25% Mg application is recommended to increase ascorbic acid content in fruits. [ABSTRACT FROM AUTHOR]

Mulberries (Morus alba L.) contain rich and beneficial nutrients for human health. However, as a temperate adaptive species, high-temperature and high-humidity climate conditions may alter the main nutritional value of mulberries after their intended arrival in tropical regions, which has not yet been reported on. In this study, we analyzed the differences in morphology, sugars, organic acids, free amino acids, and aroma contents of five mulberry varieties in the tropics between two harvesting periods. The results show that the full-ripe fruits of M. laevigata W (TLM) have the longest fruit length (83.67 mm) and highest brix (25.90); meanwhile, full-ripe fruits of M. atropurpurea R (D10M) have the longest fruit transverse stem (20.00 ± 0.577 mm) and single-fruit weight (9.63 ± 0.033 g). Fructose, glucose, and sucrose were the main sugars, and oxalic acid, quinic acid, malic acid, and citric acid were the main organic acids in all varieties; in addition, the sucrose content in mature fruits of M. laevigata W. (BLM) and M. alba L. BZZ (BZM) was significantly higher than other sugars. Twenty free amino acids were detected in all five varieties and asparagine was the main free amino acid. A total of 100 volatile compounds were identified, including 31 esters, 20 aldehydes, 14 hydrocarbons, 11 alcohols, 10 acids, 6 ketones, and 8 others. Although the main components of five mulberry full-ripe fruits were significantly higher than the green-ripe fruits, gamma-amino butyric acid and a few other components were otherwise. The research results show that the tropical climate conditions could increase the main nutritional components of mulberries, but the specific molecular regulatory mechanisms need to be further analyzed. [ABSTRACT FROM AUTHOR]

Parsnip, a root vegetable from the Apiaceae family, is rich in dietary fiber, pectin, and starch but remains relatively unfamiliar in South Korea. This study investigated the physicochemical properties of two Korean-grown parsnip cultivars, 'Warrior' and 'Albion', focusing on their organic acid and sugar compositions. The 'Warrior' cultivar has higher firmness and water content but lower SSC compared to 'Albion'. In 'Warrior', malic and lactic acids were the main organic acids, while 'Albion' had predominant oxalic and malic acids. Malic acid was also the primary organic acid in the inedible parts of 'Warrior', and oxalic acid in 'Albion'. In the edible parts of both cultivars, sucrose was identified as the main sugar. In 'Warrior', the levels were 88.59%, 90.35%, and 79.13% in the cortex, pith, and skin, respectively, while in 'Albion', the levels were 88.56%, 64.40%, and 67.39%. 'Warrior' showed higher total sugar content in its cortex (6.66%) compared to 'Albion' (3.67%). These results highlight the beneficial compounds in parsnips and suggest their potential for improving dietary strategies and health. [ABSTRACT FROM AUTHOR]

This study investigated the effect of a 2% lactic acid and 2% ascorbic acid mixture, applied via a spray method, on the quality of wild red deer (Cervus elaphus) meat stored under vacuum packaging at 4 ± 1 °C for 21 days. A total of 48 semimembranosus muscle steaks were used, divided into two groups: 24 treated with the acid mixture and 24 non-treated controls. Key parameters, including the pH, instrumental color, bacterial counts, texture profile analysis, and protein degradation (sarcoplasmic and myofibrillar proteins) using sodium dodecyl-sulfate polyacrylamide gel electrophoresis, were assessed on different days. Treated samples exhibited significantly lower aerobic plate counts (p < 0.05) compared to controls. No significant differences in pH were found between the groups, except on day one (p < 0.05). Over time, texture analysis revealed a significant reduction in hardness, cohesiveness, and chewiness in both groups, with treated samples showing greater tenderness. Importantly, the lactic acid and ascorbic acid treatment did not adversely affect the color attributes of the meat. This method shows potential for improving the microbiological safety of venison without compromising its quality, making it a promising preservation technique for the meat industry. [ABSTRACT FROM AUTHOR]

The changes and transformation laws of intermediate liquid-phase products during the anaerobic degradation of lignite by sulfate-reducing bacteria in the formation of hydrogen sulfide play an important role in supplementing and improving the existing theories on the genesis of hydrogen sulfide gas in coal mines. In this paper, H2S gas and key intermediate liquid-phase products produced during the anaerobic degradation of lignite by sulfate-reducing bacteria were detected and analyzed by gas chromatography and gas chromatography-mass spectrometry. The results showed that the process of hydrogen sulfide production from lignite degradation by sulfate-reducing bacteria can be roughly divided into four stages: slow production phase, rapid growth phase, steady production phase, and slight decline phase. In this reaction system, the SO42− concentration showed a decreasing trend, the pH value showed an increasing trend, and the ORP value decreased and then slightly increased with time. Ten volatile component types were detected during the experiment: straight-chain alkanes, branched-chain alkanes, alcohols, aldehydes, ketones, olefins, amines, lipids, acids and phenols. The key components in the intermediate liquid phase products were straight chain alkanes, straight chain alkanes, acids, alcohols, phenols and amines. PAHs, alkanes, and phenols are closely related to H2S production, while amides stimulate nitrogen production. The process is divided into three stages: hydrolysis stage, H2S gas production stage, and decay stage. Liquid-phase intermediates play an important role in the formation process of coal mine BSR hydrogen sulfide and the mechanism of coal mine H2S genesis. [ABSTRACT FROM AUTHOR]

Background: Phosphorus-solubilizing bacteria (PSB) are vital in converting insoluble phosphorus into a soluble form that plants can readily absorb and utilize in soil. While previous studies have mainly focused on the extracellular secretion of microorganisms, few have explored the intricate intracellular metabolic processes involved in PSB-mediated phosphorus solubilization. Results: Here, we uncovered that Ca3(PO4)2 could serve as a source of insoluble phosphorus for the PSB, Pseudomonas sp. NK2. High-performance liquid chromatography (HPLC) results indicated higher levels of organic acids released from insoluble phosphorus compared to a soluble phosphorus source (KH2PO4), with acetic acid released exclusively under insoluble phosphorus condition. Moreover, non-target metabolomics was employed to delve into the intracellular metabolic profile. It unveiled that insoluble phosphorus significantly enhanced the tricarboxylic acid cycle, glycolysis, glyoxylic acid metabolism, and other pathways, leading to the production of acetic acid, gluconic acid, oxalic acid, and citric acid for insoluble phosphorus solubilization. In our quest to identify suitable biochar carriers, we assessed seven types of biochar through the conjoint analysis of NBRIP medium culture and application to soil for 30 days, with cotton straw-immobilized NK2 emerging as the most potent phosphorus content provider. Lastly, NK2 after cotton straw immobilization demonstrated the ability to enhance biomass, plant height, and root development of Solanum lycopersicum L. cv. Micro Tom. Conclusions: Pseudomonas sp. NK2 with cotton straw biochar could enhance phosphorus availability and tomato growth. These findings bear significant implications for the practical application of phosphorus-solubilizing bacteria in agricultural production and the promotion of environmentally sustainable farming practices. [ABSTRACT FROM AUTHOR]

In this paper, the removal behavior of alkali and alkaline earth metals (AAEMs) and the evolution of microscopic characteristics in high alkali coal under the leaching of inorganic and organic acids are studied. The results show inorganic acids have better effect on the removal of AAEMs because of their stronger ability to convert carboxylate and phenol salts into covalent carboxylic acids and phenols. Citric acid has a slightly weaker effect than inorganic acids, and oxalic acid has the least effect. The improvement of slagging characteristics is consistent with the removal ability. Sulfuric acid, hydrochloric acid and citric acid are more effective in enhancing the calorific value of coal, with an enhancement of about 0.60 MJ/kg. After leaching, the pores and cracks in the coal are developed, and the mesopores have a tendency to shift to a lower pore size range. This trend is most pronounced in citric acid leached coal and hydrochloric acid leached coal. Sulfuric acid seriously damage the surface morphology, which results in a tendency of large pore transfer in S-form coal. [ABSTRACT FROM AUTHOR]

The aims of the present stud were to optimize fermentation parameters of seedless wampee wine using response surface methodology (RSM) and evaluate the changes in flavor metabolites during fermentation. Seedless wampee wine of optimal sensory quality was produced using an inoculum concentration of 0.6%, initial sugar levels of 200 g/L, a fermentation temperature of 22 °C, and a fermentation period of 9 days. Then the flavor compound profiles (amino acids, organic acids and volatile aroma compounds) of seedless wampee wine during the fermentation under optimal conditions were analyzed using high performance liquid chromatography (HPLC) and gas chromatography–mass spectrometr (GC-MS). The main fermented phase of fermentation resulted in fluctuations in both total amino acids and organic acids, with stabilization occurring later on. A total of 54 volatile components, including esters, alcohols, terpenes, and acids, were putatively identified. Terpenes were the primary drivers of the flavor characteristics of seedless wampee. The rise of esters and decline of terpenes have the potential to significantly alter the flavor of wine during fermentation. These results would contribute to the further development of seedless wampee wine. [ABSTRACT FROM AUTHOR]

Some beneficial microbes have the ability to tolerate salinity stress conditions to obtain superior isolates of halo tolerant phosphate solubilizing bacteria (PSB) and determine the ability of PSB isolates to increase the growth of rice seedlings. The research was carried out at the Laboratory and Greenhouse of the Department of Soil Science and Land Resources, Faculty of Agriculture, Universitas Padjadjaran. In this study, halotolerant PSB were isolated from saline soil with salinity 4 dS/m and grown in Pikovskaya medium. The results showed that a superior isolate of phosphate solubilizing bacteria had been obtained from saline soil which were capable of producing phytohormones, phosphatase enzymes and organic acids. Three superior isolates PSB 1, PSB 3, and PSB 6 produced phosphatase enzymes (3.508 µg pNP/g/h, 3.307 µg pNP/g/h, and 3.257 µg pNP/g/h), growth hormone IAA (4.611 ppm, 4.913 ppm, and 3.819 ppm), and organic acids (citric, acetic, oxalic, lactic, malic and ascorbic). These isolates could form biofilms. Inoculation of PSB isolates were able to increase root length by 45.01%, 37.54%, and 32.65%. The isolate was also able to increase plant height by 28.58%, 43.77%, and 62.69%. The provision of selected PSB isolates, could increase the growth of rice plants and have the potential to be developed as biofertlizer to increase the productivity of rice plants in saline soil. [ABSTRACT FROM AUTHOR]

This study was carried out to determine the effects of different amounts of crushed corn (CC) and wheat bran (WB) on the silage quality of quinoa (Chenopodium quinoa Willd.). In the research, pH, dry matter (DM), raw ash (RA), fleig score, ammonia, crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), dry matter intake (DMI), dry matter digestibility (DMD), relative feed value (RFV), lactic acid (LA), acetic acid (AA), propionic acid (PA) and butyric acid (BA) contents of quinoa silage were determined. Quinoa plants were taken in the area sown at the research area of Iğdır University Agricultural Application and Research Center Directorate in 2022. The use of cracked corn as an additive increased the fleig score, DM, CP, DMD, DMI, RFV, LA and BA contents. On the other hand, cracked corn additive decreased pH, ammonia, NDF, ADF, RA, AA and PA contens of quinoa silage. The use of wheat bran as an additive increased the fleig score, DM, CP, DMD, NDF, LA and BA contents of quinoa silage. On the other hand, wheat bran additive decreased the pH, ammonia, ADF, DMI, RFV, RA, AA and PA contents of quinoa silage. [ABSTRACT FROM AUTHOR]

Thermoplastic starch has been attracted due to its availability, biodegradability, and processability. However, its poor tensile properties, high hydrophilicity and lack of antibacterial activity are still the major concerns for many applications. In current study, several thermoplastic cassava starch samples (THPCS), reinforced with kapok (KP) fibers and modified by varying levels of tartaric acid (TA), a natural organic acid, were prepared to enhance their limitations. All samples were mixed and shaped using an internal mixer and a compression molding machine, respectively. The modified THPCS samples were characterized using analytical techniques such as FTIR, SEM and TGA. Morphology, water uptake, mechanical properties, biodegradability, and antimicrobial performance of various samples were also evaluated. IR peak positions of O–H stretching as well as O–H bending were clearly observed for shifting to lower wavenumbers with the addition of KP fibers or KP fibers/TA, indicating of new H-bond formation. In addition, the use of KP fibers caused the enhancement of mechanical strength and thermal properties including the reduction of water uptake. Moreover, THPCS/KP fiber sample modified by TA presented surface smoothness, good biodegradability, and antibacterial performance against both Staphylococcus aureus and Escherichia coli. [ABSTRACT FROM AUTHOR]

Organic acids are among the primary substances affecting the flavor of 'Fenjiao' bananas. Several previous studies have characterized organic acids and their corresponding biosynthetic pathways in 'Fenjiao' bananas; however, chemical information about the spatial and temporal distributions of the organic acids in the bananas is absent. In this study, air flow-assisted desorption electrospray ionization mass spectrometry imaging (AFADESI-MSI) for analyzing organic acids in 'Fenjiao' bananas was developed. The organic acids in the peel and pulp of 'Fenjiao' bananas were detected and imaged in situ, and the spatial distribution of organic acids in banana fruit tissue slices were visualized. The results were validated by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The results showed that the MSI method can provide more accurate spatial and chemical localizations of the four primary organic acids (i.e., citric, malic, fumaric, and quinic acids) in the same tissues of 'Fenjiao' bananas. However, the quantification of the concentrations in different tissues is adversely affected by inaccuracy due to matrix effects. The in situ determination of the organic acids in 'Fenjiao' bananas can assist to understand the spatial and temporal distribution of organic acids in bananas, which provides a new method and idea to explore the biosynthesis and accumulation pattern of metabolites. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chinese Institute of Food Science & Technology is the property of Journal of Chinese Institute of Food Science & Technology Periodical Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Brewing is the property of China Brewing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this study, phenolic and non-phenolic metabolites in different parts of A. viridis (from the Turkish Republic of Northern Cyprus) were characterized with reversed-phase high-performance liquid chromatography (RP-HPLC) with diode array detector and high-performance liquid chromatography (HPLC), respectively. In total, approximately twenty-five phenolic compounds including quercetin, chrysin, t-Ferulic acid, and sinapic acid as the most abundant secondary metabolites were identified. On the other hand, four organic acids as non-phenolic compounds quantitatively predominant were identified for the first time in A. viridis extracts. The seed and flower extract showed strong ferric-reducing capacity, radical scavenging activity for DPPH·, phosphomolybdenum assay, metal chelating, and a-amylase inhibition activity by in vitro assays. Our results suggest that A. viridis widely used in the human diet in Cyprus is a source of numerous metabolites showing antioxidant and antibacterial potential. [ABSTRACT FROM AUTHOR]

In this study, the dissolution conditions and dissolution kinetics of copper from malachite in the presence of organic acid (C4H6O6) as an organic leaching reagent were examined. The effects of particle size, acid concentration, time, solid/liquid ratio, temperature, and mixing speed on the dissolution process of copper were investigated. According to the test results, optimum dissolution conditions are as follows: particle size was 74 µm; organic acid concentration was 0.2 mol/L; duration was 60 min; solid/liquid ratio was 1/10; the temperature was determined as 25 °C and the stirring speed was 300 rpm; and the copper extraction value was obtained as 73.18% under optimum experimental conditions. Kinetic models were applied to the dissolution efficiencies obtained to determine the dissolution kinetics of copper in the presence of organic acid, and it was found that the dissolution process was controlled by the film diffusion model. In light of the data obtained, it can be said that organic acid, which is an economical and environmentally friendly leaching reagent, can be used in the dissolution of copper from malachite (Cu (OH) 2 CuCO 3) , as well as in the leaching of other precious metals such as copper, zinc, and cobalt from oxide and carbonate ores. [ABSTRACT FROM AUTHOR]

Food processing industries commonly employ organic acids (OAAs) to determine bacterial contamination in acidified and fermented foods. OAAs are believed to possess potent antimicrobial properties by permeating cell membranes, altering proton and anion concentrations in the cytoplasm due to their lipophilic undissociated forms. The bacteriostatic or bactericidal effects of OAAs are influenced by various factors including microbial physiology, environmental pH, and acid dissociation ratios. Despite their utility, the precise mechanisms underlying OAA-mediated inhibition of pathogenic bacteria remain incompletely understood. Therefore, the objectives of this review are to compile a selected area of researches that focus on the current propensity of different OAAs for inactivating food-borne pathogens, and then to present a theoretical insight on the use of OAAs to prevent and control pathogenic bacteria present in acidic/acidified foods and their mode of mechanisms. [ABSTRACT FROM AUTHOR]

The study aimed to evaluate the synergistic interaction of organic acids (OAAs) or lemon extract (LE) plus mild heat (MH; 55 °C) against Escherichia coli O157:H7, Salmonella enterica serovar Typhimurium, and Listeria monocytogenes inoculated in beetroot and watermelon juices. A mixed culture cocktail of E. coli O157:H7, S. Typhimurium or L. monocytogenes was inoculated in beetroot or watermelon juice, followed by treatments with MH, citric acid + MH, malic acid + MH, tartaric acid + MH, and LE + MH. Approximately < 2.0-log reductions in the number of E. coli O157:H7, S. Typhimurium, and L. monocytogenes were observed when these bacteria were heated in juices at 55 °C for 5 min. A combination of 1.0% OAAs or 20% LE and MH (55 °C) for 5 min resulted in an additional log-reduction in the count of E. coli O157:H7, S. Typhimurium, and L. monocytogenes by 2.2–5.0, 4.5–5.0, and 1.5–5.0, respectively. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Ecology & Rural Environment is the property of Journal of Ecology & Rural Environment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The study aimed to fingerprint the physical manufacturing properties of five commonly used acid sources in effervescent systems for designing the formulation and process of such systems. The hygroscopicity, texture properties, rheological torque, compressibility, tabletability, etc., were investigated to inspect 'powder direct compression (DC)' and 'wet granulation and compression' properties of citric (CA), tartaric (TA), malic (MA), fumaric (FA), and adipic acid (AA). The DC ability was evaluated by the SeDeM expert system. The results indicated that all acid powders failed to meet flowability requirements for DC, and plastic deformation dominated during compression. Furthermore, CA exhibited strong hygroscopicity and punch sticking, while MA demonstrated the best tabletability. TA had a large wet granulation space and was relatively the most suitable for DC. AA was extremely hygroscopic, and its flowability improved significantly as particle size increased. Finally, FA displayed the lowest hygroscopicity and ejection force as well as great compressibility and wet granulation space, and did not exhibit punch sticking, while the granule fragments dissolved slowly during disintegration. Generally speaking, the formulation or granulation affected the tabletability, indicating that pairing with other acids or suitable fillers could potentially improve its disadvantages. These multidimensional assessments effectively reduce the pre-exploration and enhance the efficiency of the development of effervescent systems. [ABSTRACT FROM AUTHOR]

To study the quality discrepancy of jujube vinegar brewed from different jujube varieties, six types of jujube vinegar made from different varieties of jujube were evaluated by the analysis of basic physicochemical components (such as pH, total acid, total phenol and total flavone), color, in vitro functional activity (antioxidant capacity and lipid-lowering ability), organic acids, amino acids, and volatile aroma components, combined with electronic nose and sensory evaluation. The results showed that there were significant differences in the quality of jujube vinegar brewed from different jujubes. In terms of physical and chemical analysis, the total acid and total flavonoids of Xinjiang jujube vinegar were the highest, which were 54.87 g/L and 1168.84 mg RE/L, respectively. By contrast, the total phenolic content of Xinjiang Jun-jujube jujube vinegar was the highest, which was 1815.63 mg GAE/L. Henan Lingbao jujube vinegar and Fuping jujube vinegar had better color values. Xinjiang Jujube vinegar showed the best antioxidant and lipid lowering activities. Fuping jujube vinegar had the lowest total organic acid content of 47.07 g/L. Xinjiang gray jujube vinegar and Xinjiang Jun-jujube vinegar had higher essential amino acid and total amino acid content, while Hebei Fuping jujube vinegar had lower amino acid content. A total of 41 volatile aromas were detected in 6 kinds of jujube vinegar, and there were certain differences in the types and contents of volatile aromas contained in different kinds of jujube vinegar. The sensory evaluation showed that all jujubes were suitable for brewing jujube vinegar, among which Xinjiang Hui-jujube vinegar had the best sensory acceptance. In summary, there were certain differences in the quality of 6 kinds of jujube vinegar. The high functional activity of Xinjiang Jun-jujube vinegar made it more suitable as a functional fruit vinegar. Based on the high sensory acceptance of Xinjiang Hui-jujube vinegar, the Xinjiang Hui-jujube would be suitable for the vinegar processing too.

Intestine derived lipopolysaccharide (LPS) is closely related to systemic inflammation and disorders, yet little is known about its roles in the weanling stress of piglets and its potential as a nutritional intervention target. This study aimed to investigate the potential of essential oils (EO) and organic acids (OA) in mitigating weaning stress in piglets by modulating the circulation of intestine derived LPS. Seventy-two weaned piglets at 21 d old with body weight of 8.12 ± 0.168 kg were randomly divided into a control group (CON) and an experimental group, each consisting of six pens with six piglets per pen, and were fed either a basal diet or a basal diet supplemented with 3 kg/t OA + 500 g/t EO (EO + OA). On the 14th day of the feeding trial, 12 weaned piglets were randomly selected from the CON group, and 6 piglets were selected from the experimental group. Based on diet composition and stress treatment, these 18 piglets were divided into the following three groups: 1) CON group. Piglets were fed a basal diet and received an intraperitoneal injection of saline as a control. 2) LPS group. Piglets were fed a basal diet and received an intraperitoneal injection of LPS (100 μg/kg body weight) to induce stress. 3) EO + OA + LPS group. Piglets were fed a basal diet supplemented with EO and OA and received an intraperitoneal injection of LPS (100 μg/kg body weight) to induce stress. The results showed that EO + OA significantly ameliorated the oxidative imbalance and inflammation disorder induced by LPS in piglets' serum and intestine by inhibiting the activation of the Toll-like receptor 4 (TLR4)/nuclear factor-kappa B (NF-κB)/mitogen-activated protein kinase (MAPK) signaling pathway. Furthermore, compared to the LPS group, supplementation with EO + OA restored LPS-induced reductions in Bcl-2 protein expression in the piglets' intestines (P

Abstract Background Phosphorus-solubilizing bacteria (PSB) are vital in converting insoluble phosphorus into a soluble form that plants can readily absorb and utilize in soil. While previous studies have mainly focused on the extracellular secretion of microorganisms, few have explored the intricate intracellular metabolic processes involved in PSB-mediated phosphorus solubilization. Results Here, we uncovered that Ca3(PO4)2 could serve as a source of insoluble phosphorus for the PSB, Pseudomonas sp. NK2. High-performance liquid chromatography (HPLC) results indicated higher levels of organic acids released from insoluble phosphorus compared to a soluble phosphorus source (KH2PO4), with acetic acid released exclusively under insoluble phosphorus condition. Moreover, non-target metabolomics was employed to delve into the intracellular metabolic profile. It unveiled that insoluble phosphorus significantly enhanced the tricarboxylic acid cycle, glycolysis, glyoxylic acid metabolism, and other pathways, leading to the production of acetic acid, gluconic acid, oxalic acid, and citric acid for insoluble phosphorus solubilization. In our quest to identify suitable biochar carriers, we assessed seven types of biochar through the conjoint analysis of NBRIP medium culture and application to soil for 30 days, with cotton straw-immobilized NK2 emerging as the most potent phosphorus content provider. Lastly, NK2 after cotton straw immobilization demonstrated the ability to enhance biomass, plant height, and root development of Solanum lycopersicum L. cv. Micro Tom. Conclusions Pseudomonas sp. NK2 with cotton straw biochar could enhance phosphorus availability and tomato growth. These findings bear significant implications for the practical application of phosphorus-solubilizing bacteria in agricultural production and the promotion of environmentally sustainable farming practices.

Abstract The aims of the present stud were to optimize fermentation parameters of seedless wampee wine using response surface methodology (RSM) and evaluate the changes in flavor metabolites during fermentation. Seedless wampee wine of optimal sensory quality was produced using an inoculum concentration of 0.6%, initial sugar levels of 200 g/L, a fermentation temperature of 22 °C, and a fermentation period of 9 days. Then the flavor compound profiles (amino acids, organic acids and volatile aroma compounds) of seedless wampee wine during the fermentation under optimal conditions were analyzed using high performance liquid chromatography (HPLC) and gas chromatography–mass spectrometr (GC-MS). The main fermented phase of fermentation resulted in fluctuations in both total amino acids and organic acids, with stabilization occurring later on. A total of 54 volatile components, including esters, alcohols, terpenes, and acids, were putatively identified. Terpenes were the primary drivers of the flavor characteristics of seedless wampee. The rise of esters and decline of terpenes have the potential to significantly alter the flavor of wine during fermentation. These results would contribute to the further development of seedless wampee wine. Graphical Abstract

The study examined the functional properties of lactic yeast-fermented Tartary buckwheat sprout with passion and pineapple juice (Tatary buckwheat sprout juice). Pineapple and passion fruit were included during fermentation to improve the sensory and nutritional quality of the juice. We initially created a juice with Tartary buckwheat sprouts, and then fermented it with Lactobacillus plantarum and yeast (Saccharomyces cerevisiae) to produce a novel fermented sprout juice. Our results indicated that the best organoleptic quality was achieved when the inoculum of Lactobacillus plantarum was 2%, the inoculum of yeast was 1%, and the fermentation time was 30 hours. The results showed that fermentation resulted in a 1.55-fold increase in the total amino acid content, with fresh sweet amino acids increasing by 1.75-fold and sour-bitter amino acids increasing by 1.33-fold. Additionally, the levels of acetic acid, lactic acid, citric acid, and tartaric acid in the buckwheat sprout juice increased by 12.31%, 11.45%, 4.22%, and 3.88%, respectively. GC-MS analysis revealed a significant increase of volatile flavoring substances, such as alcohols and esters, by more than 24.7% in the fermentation products. From the results, yeast-Lactobacillus fermentation process may effectively improve the nutritional values of Tartary buckwheat sprout juice.

Objective This study investigated the impact of supplementation of protease and organic acid on growth performance and other biological parameters in broilers fed poultry by-product meal (PBM) based diet. Methods Five hundred 1-day-old broiler chicks (Ross 308) were distributed into five treatments with 5 replicates, each pen having 20 birds, and fed each group one of five isocaloric and isonitrogenous diets in two phases: stater phase (1 to 21 days) metabolizable energy (ME) 3000 kcal/kg; crude protein (CP) 22%, and a finisher phase (22 to 35 days) ME 3,200 kcal/kg; CP 19.5%. The dietary treatments were: i) standard broiler ration (Cont); ii) The control diet with 25% of the soybean meal replaced by PBM on an equivalent protein basis (PBM); iii) PBM diet supplemented with 0.5 g/kg of protease (PBMP); iv) PBM diet supplemented with 1 g/kg organic acid (PBMO); and v) PBM diet addition with 0.5 g/kg protease and 1 g/kg organic acid (PBMPO). Results The overall data showed that feed conversion ratio was improved (p

Organic acid salts can modulate fish growth performance and antioxidant/immune systems, thus they can be used as feed additives for intensive fish culture. Hence, this study investigated the effects of dietary sodium butyrate (NaB) supplementation on growth, antioxidant, immunological and stress indicators in common carp, Cyprinus carpio, reared at high stocking density. Three levels of dietary NaB (0, 1 and 2 g/kg) and two stocking densities [5 (L) and 10 (H) g/L, corresponding to 20 and 40 fish/aquarium, respectively] were combined to have six triplicate treatments: B0-L: 0 g/kg NaB + L; B1-L: 1 g/kg NaB + L; B2-L: 2 g/kg NaB + L; B0-H: 0 g/kg NaB + H; B1-H: 1 g/kg NaB + H; B2-H: 2 g/kg NaB + H. Fish (10.5 ± 0.17 g) were daily fed at a rate of 3% of biomass for eight weeks. The results showed that NaB contributed to stress mitigation by lowering plasma glucose levels and hepatic transaminases, while increasing plasma triiodothyronine levels. NaB boosted antioxidant capacity by increasing hepatic/intestinal superoxide dismutase, catalase and total antioxidant capacity and lowering malondialdehyde levels. NaB supplementation increased blood leukocyte count, neutrophil percentage, alternative complement activity, mucosal/humoral immunoglobulin levels and mucosal/intestinal lysozyme activities. NaB improved growth performance and feed efficiency, likely due to a reduction in stress and energy expenditure and/or an improvement in overall gut and hepatopancreas health and function. Overall, the inclusion of 1 g/kg NaB in the feed is recommended for optimal health and growth performance of common carp kept at high stocking densities. [ABSTRACT FROM AUTHOR]

Objective: This study investigated the impact of supplementation of protease and organic acid on growth performance and other biological parameters in broilers fed poultry byproduct meal (PBM) based diet. Methods: Five hundred 1-day-old broiler chicks (Ross 308) were distributed into five treatments with 5 replicates, each pen having 20 birds, and fed each group one of five isocaloric and isonitrogenous diets in two phases: stater phase (1 to 21 days) metabolizable energy (ME) 3000 kcal/kg; crude protein (CP) 22%, and a finisher phase (22 to 35 days) ME 3,200 kcal/kg; CP 19.5%. The dietary treatments were: i) standard broiler ration (Cont); ii) The control diet with 25% of the soybean meal replaced by PBM on an equivalent protein basis (PBM); iii) PBM diet supplemented with 0.5 g/kg of protease (PBMP); iv) PBM diet supplemented with 1 g/kg organic acid (PBMO); and v) PBM diet addition with 0.5 g/kg protease and 1 g/kg organic acid (PBMPO). Results: The overall data showed that feed conversion ratio was improved (p<0.05) in the PBMP group. Apparent CP digestibility was higher (p<0.05) in both Cont and PBMP groups. Jejunal villus height increased (p<0.05) in PBMP and PBMPO groups, while only the PBMO group exhibited a higher (p<0.05) crypt depth. Lipase activity was increased (p<0.05) in the PBMP, PBMO, and PBMPO dietary treatments. However, trypsin activity showed a significant increase (p<0.05) in the PBMP and PBMO groups. Serum biochemistry increased (p<0.05) globulin and total protein levels in the PBMP group. Conclusion: PBM could partially replace the soybean meal with supplementation of either protease or organic acid in broiler diets without impairing overall growth performance. Furthermore, careful optimization must be considered when combining protease and organic acids. [ABSTRACT FROM AUTHOR]

Abstract In this study, changes in bioactive compound contents and the in vitro biological activity of mixed grains, including oats, sorghum, finger millet, adzuki bean, and proso millet, with eight different blending ratios were investigated. The total phenolic compounds and flavonoid contents ranged from 14.43–16.53 mg gallic acid equivalent/g extract and 1.22–5.37 mg catechin equivalent/g extract, respectively, depending on the blending ratio. The DI-8 blend (30% oats, 30% sorghum, 15% finger millet, 15% adzuki bean, and 10% proso millet) exhibited relatively higher antioxidant and anti-diabetic effects than other blending samples. The levels of twelve amino acids and eight organic acids in the grain mixes were measured. Among the twenty metabolites, malonic acid, asparagine, oxalic acid, tartaric acid, and proline were identified as key metabolites across the blending samples. Moreover, the levels of lactic acid, oxalic acid, and malonic acid, which are positively correlated with α-glucosidase inhibition activity, were considerably higher in the DI-blending samples. The results of this study suggest that the DI-8 blend could be used as a functional ingredient as it has several bioactive compounds and biological activities, including anti-diabetic activity.

Many diseases exhibit circadian fluctuation, including diabetes, asthma, rheumatoid arthritis, and hypertension. These disorders cannot be effectively treated with conventional dosage forms and instead require time-scheduled drug release for pharmacological effectiveness. The objective of this work was to use simple process to overcome the solubility problem by employing a novel solubilizer and to generate peristaltic release based on the physical and chemical interactions between acrylic copolymer and organic acid. To address the solubility issue of nifedipine, sepitrap 4000 is being used as a solubilizer inside the core tablet. The resulting physical mixture underwent various analyzes including saturated solubility, in-vitro dissolution, FTIR, DSC, and PXRD. A saturation solubility analysis confirmed 368% improvement as significant impact of sepitrap 4000 on nifedipine solubility and bioavailability. The 32 complete factorial design was used to optimize press-coated pulsatile formulation, with lag time and time required to release 50% of drug, as responses and concentrations of eudragit RSPO and tartaric acid as independent variables. According to stability study, developed pulsatile product was found to be suitably stable under rapid and regulated settings. As a result, produced pulsatile tablet is suitable formulation for alleviation of early morning blood pressure spikes and other cardiac problems that follow a circadian rhythm. [ABSTRACT FROM AUTHOR]

There is a growing interest in the food industry in new drying technologies that reduce the time required for dehydration, combined with low energy consumption, low environmental impact, and maintenance of the overall quality of the product. This work investigated convective drying of pumpkin with and without ultrasound-organic (citric or acetic) acid pretreatment for different durations (10, 20, and 30 min). Drying was carried out at 60 °C, and the Wang and Singh model had the best fit for the experimental data. Samples pretreated for 30 min had the shortest drying times. Water diffusivities ranged from 6.68 × 10−8 m2/s to 7.31 × 10−8 m2/s, with the pretreated samples presenting the highest values. The dried pumpkin water activity values were below 0.60. Regarding color parameters, there was a slight increase in luminosity, a slight reduction in a*, and a significant increase in b*. Drying resulted in the loss of ascorbic acid and phenolic compounds, but the samples pretreated with citric acid showed better retention. There was also a reduction in the total carotenoid content, but samples pretreated with acetic acid for 10 and 20 min showed the best retention. [ABSTRACT FROM AUTHOR]

Lithium-ion battery recycling includes discharging and processing exhausted batteries to recover valuable metals for reuse in new battery production. The improper disposal of e-waste draws attention to the possibility of reprocessing used lithium-ion batteries to make progress in recovering valuable metals. In this study, using biodegradable mixed organic acids, valuable metals were extracted from used batteries by a hydrometallurgical process under optimal conditions such as a stirring speed of 200 rpm, mixed acid concentration of ascorbic acid/citric acid (AA/CA) of 50:50 mM, temperature of 50 °C, time of 50 min, and slurry density of 20 g/L. Kinetic studies verified that the apparent activation energies, 43.6, 70.5, 49.8, 60.6, 45, and 6 kJ/mol, and surface chemical reactions controlled the leaching process for Li, Mn, Co, Ni, and Cu from cathode powder obtained from used LIBs. XRD and FT-IR confirmed the crystalline nature of the cathode powder. UV–visible spectra showed a Co(II) complex with λmax at 380 nm by reduction of the Co(III) complex. Lithium was recovered by LiF and as MnO2 using ammonium persulfate. Our efforts aimed to recover it through an economical and environmentally friendly approach. [ABSTRACT FROM AUTHOR]

Medicago sativa is a high-quality legume forage that is widely cultivated around the world. However, low phosphorus (LP) stress is one of the main limiting factors for its yield and quality. Currently, it is unclear how various alfalfa root types respond to LP stress. Thus, the creeping-rooted M. varia 'Gannong No. 4' (or GN), tap-rooted M. sativa 'Longdong' (or LD), and rhizomatous-rooted M. sativa 'Qingshui' (or QS) were selected to detect changes in growth, metabolites, phytohormones, and organic acids after 34 days of LP stress treatment (0.01 mmol·L−1 KH2PO4). We observed LP stress significantly inhibited plant growth, and 123, 73, and 42 considerably upregulated differential metabolites were categorized into 33, 26, and 20 metabolic pathways in GN, LD, and QS under LP stress, respectively. Amino acids, plant growth regulators, and organic acids are the main metabolites. After 34 d of LP treatment, the plant height, total surface area, leaf length, ground biomass, leaf width, total volume, leaf area, and ZT content of different root types of alfalfa significantly decreased, while the contents of malic acid, citric acid, oxalic acid, IAA, ABA, and GA3 significantly increased. The plant height, leaf length, leaf width, leaf area, total surface area, total volume, ground biomass, root biomass, the number of different metabolites, and the contents of malic, citric, and oxalic acid, and IAA of GN were significantly higher than those of QS and LD under LP stress. From this point of view, GN was more tolerant than LD and QS under the LP condition. [ABSTRACT FROM AUTHOR]

Regulating the crystal morphology of low aspect ratio, short columnar α‐hemihydrate gypsum (α‐HH) is crucial due to its distinctive physical and chemical properties, which make it widely applicable. In this work, succinic acid, malic acid, and maleic acid were selected as the research objects, among which the number and spacing of carboxyl groups were the same, while the auxiliary functional groups were different. The adsorption energy, Mulliken charge population, electronic state density, and charge density difference of the three organic acids on the surfaces of α‐HH were calculated by well‐defined ab initio calculations. The results showed that the synergistic effect of ‐COOH groups is necessary for the effective crystallization of α‐HH. Organic acids interact with the Ca atoms on the crystal surface, as evidenced by their preferential adsorption on the top surface of α‐HH crystals (002). This interaction occurs through a double‐dentate chelation between the carboxyl oxygen atoms at both ends of the organic acid and the Ca atoms on the crystal surface, resulting in the formation of a six‐membered cyclic organic acid calcium complex. This complex hinders ion diffusion and the stacking of crystal surfaces, leading to a decrease in the growth rate along the c‐axis and promoting more extensive crystal development and larger crystal sizes. The work provides insight into the preparation of short prismatic α‐HH using organic acid crystallizing agents. [ABSTRACT FROM AUTHOR]

Copyright of China Brewing is the property of China Brewing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Byproducts and wastes from the food processing industry represent an important group of wastes generated annually in large quantities. It is important to note that the amount of this waste will increase with industrialization, and effective solutions must be found urgently. Many wastes that cause environmental pollution are evaluated by their low-tech conversion into products with little economic value, such as animal feed and fertilizer. Therefore, the evaluation of food processing waste using effective recycling techniques has become an interesting subject with increasing population, ongoing biotechnological studies, and advances in technology. The conversion of food waste into biotechnological products via fermentation is a sustainable, environmentally friendly, and economical method in line with the principles of green chemistry. This approach promotes the reuse of food waste by supporting the principles of a circular economy and offers sustainable alternatives to fossil fuels and synthetic chemicals. This contributes to reducing the carbon footprint, preserving soil and water quality, and providing economic sustainability through the production of high-value products. In this study, the properties of olive mill wastewater, an important and valuable waste in the olive oil industry, its environmental aspects, and its use in biotechnological applications that integrate green chemistry are evaluated. [ABSTRACT FROM AUTHOR]

The pretreatment of lignocellulosic biomass such as Miscanthus grown on marginal agricultural land is very challenging and requires severe conditions to fractionate cell wall polymers for further valorization. The current study aimed to determine organic acid-based mild conditions to pretreat contrasting lignocellulosic Miscanthus genotypes for the efficient fractionation of cell wall components, with special focus on hemicellulose extraction. In doing so, five Miscanthus genotypes were subjected to four different acid treatments (sulfuric acid, oxalic acid, malonic acid, and citric acid) in a vertical high-pressure steam sterilizer. The results demonstrated that, among the organic acids, oxalic acid was identified as the most effective pretreatment solvent for hemicellulose separation, whereas citric acid yielded the highest amount of galacturonic acid, varying from 15 to 17 mg mL−1 across genotypes. One best performing genotype was selected for the enzymatic hydrolysis. Overall, M. floridulus genotypes exhibited the optimal quality traits for efficient bioconversion with second best in terms of ethanol production potential. [ABSTRACT FROM AUTHOR]

Aims: Global warming due to increasing greenhouse gas emissions intensifies frequency and duration of extreme high temperature which has become a primary threat to cool-season crops worldwide. Aim of this study was to examine root adaptability to high temperature regulated by γ-aminobutyric acid (GABA) associated with changes in antioxidant metabolism, root vitality, osmotic balance, and global metabolites remodeling in roots. Methods: A cool-season creeping bentgrass (Agrostis stolonifera) plants were pretreated with or without the 0.5 mM GABA before being subjected to heat stress (35/30 °C) or optimal temperature condition (23/19 °C) for 15 days. Roots were sampled to analyze changes in physiological parameters and metabolomics. Results: Heat stress significantly induced reactive oxygen species production in roots resulting in oxidative damage to proteins and cell membranes. However, the GABA could effectively alleviate heat-induced decline in total antioxidant capacity and also improve multiple antioxidant enzyme activities, root vitality, and osmotic adjustment ability in roots. Metabolomic analysis found that a total of 71 metabolites were jointly or differentially regulated by heat stress or heat stress together with the GABA application in roots. In response to heat stress, the GABA improved the accumulation of multiple amino acids, sugars, organic acids, and other metabolites (urea, putrescine, myoinositol, arbutin, campesterol, and stigmasterol) in roots. Conclusions: GABA could effectively increase antioxidant capacity, root vitality, and osmotic adjustment associated with improved root adaptability to heat stress. In addition, the GABA-regulated metabolites remodeling could be attributed to better energy metabolism, osmotic balance, antioxidant capacity, and cellular structures in roots under heat stress. [ABSTRACT FROM AUTHOR]

Following the goals of the circular economy, this work demonstrates that an industrial by-product can be used in environmental remediation. Metallurgical slag and citric acid were used to form an Fe:Cit complex by simultaneously carrying out the lixiviation of the iron and the chelating stages with an 87% iron recovery. This complex was evaluated in the photo-Fenton process to produce HO• through salicylic acid dosimetry or salicylic acid hydroxylation, producing 0.13 ± 0.1 mM HO• after 30 min of operation; such a value is three orders of magnitude higher than the one reported for the metallurgical slag (as a heterogeneous catalyst, 22 μM) in the photo-Fenton-like process. The system was tested for its ability to degrade a mixture of drugs, including dexamethasone (DEX), naproxen (NAP), and ketorolac (KTR), which are often used to treat the symptoms of COVID-19. The drug degradation tests were performed in two stages. In the first stage, the Fe:Cit complex from the metallurgical slag was compared to the one formed by analytical-grade reactants; the drug degradation was faster for the former, with the major difference being observed at 5 cm and 500 W/m2. Here, 85–90% of the drugs was degraded in 5 min using Fe:Cit from slag, while at least 20 min was necessary to achieve such degradation with the analytical reagent, conceivably because of the trace compounds being lixiviated from the slag. Then, the effects of the liquid depth (5, 10, and 15 cm) and irradiance (250, 500, and 750 W/m2) were tested; the pseudo-first-order kinetic degradation constants for the three model pollutants were in the range of 0.009 > kD > 0.09 min−1, showing that degradation is more feasible for DEX than for NAP and KRT because the radical attack feasibility is related to the molecular structures. [ABSTRACT FROM AUTHOR]

Interest is growing in the relationship of the microbiota and intestinal environment with health in companion animals. Galacto-oligosaccharides (GOS), typical prebiotics, are expected to provide benefits in dogs. Previous studies of GOS in dogs have involved dogs with similar rearing conditions and diets, which may have biased the results. We conducted an open study of 26 healthy dogs kept in households with diverse rearing environments in order to evaluate how the intake of a GOS-containing syrup affects the intestinal microbiota and its metabolites. Each dog was fed 1.2-4.8 g of the GOS-containing syrup (GOS 0.5-2.0 g equivalent) for 8 weeks. Fecal microbiota, fecal concentrations of organic acids and putrefactive products, fecal odor, and serum uremic toxin concentrations were evaluated before intake (0 weeks), during the 8-week intake period (4 and 8 weeks), and 4 weeks after intake (12 weeks). The activity of N-benzoyl-DL-arginine peptidase in dental plaque, which may be associated with periodontal disease, was evaluated at 0 and 8 weeks. Continuous intake of GOS resulted in changes in fecal microbiota, with a particularly marked increase in the abundance of Megamonas, which produces propionic acid. Other findings included a significant increase in the fecal acetic, propionic, and n-butyric acid concentrations. Additionally, significant decreases in fecal odor, fecal phenol concentration, and serum indoxyl sulfate concentration. Intake of GOS was also associated with a significant decrease in N-benzoyl-DL-arginine peptidase activity in dental plaques. These results suggest that continuous intake of GOS may contribute to canine health. [ABSTRACT FROM AUTHOR]

Background: In the poultry industry, additives are used to stimulate growth, improve production performance, and improve the health of the flock. On the other hand, reducing the quality of food items and their protein level, as well as the high level of anti-nutritional substances, disturbs the balance of the microbial ecosystem of the digestive system of birds and health and ultimately reduces their performance. The health and nutritional status of poultry is largely dependent on the microbial flora of the digestive system, which directly and indirectly affects the morphology of the digestive system, nutrition, and immune system. The microbial flora of the intestine is relatively unstable and is easily affected by various nutritional factors. Therefore, this research aimed to investigate the effect of the simultaneous use of organic acids and prebiotics in diets containing low-quality soybean meal on the performance of laying hens. Methods: This experiment was conducted using a completely randomized design in a 2 x 2 factorial arrangement using two levels of mixed organic acids and prebiotics and two types of soybean meal in the diet of laying hens. Chickens were distributed among pens based on weight and production rates for 2 weeks. Then, 192 laying hens of the LSL strain at the end of 73 weeks of age, after weighing and entering the wing number, were placed in 48 experimental cages, including four treatments with 12 replications, and fed for 12 weeks. Experimental treatments were treatment I (without the combination of organic acids and probiotics and containing 42% protein soy), treatment II (without the combination of organic acids and probiotics and containing 38% protein soy), treatment III (the combination of organic acids and probiotics and containing 42% protein soy), and treatment IV (a combination of organic acids and probiotics with 38% protein soy). To add the combination of organic acids and prebiotics, organic acid was used at a level of 1 kg per ton. The composition of the product included 30% propionic acid, 10% butyric acid, and 15% acetate plus 20% prebiotic with the origin of the Saccharomyces cerevisiae yeast cell wall. Performance traits, including production percentage and egg weight, egg mass weight, and feed conversion ratio (FCR) were measured at the end of the experiment (age 85 weeks) when all the birds were killed using the cervical vertebrae displacement method. The abdominal fat response of the immune system, histomorphology of the small intestine, and microbial population of the cecum were the investigated parameters. Results: Except for the first week of the experiment, the addition of the combination of organic acids and probiotics and the use of high-quality soybean meal in the diet significantly increased the egg-laying percentage during the rest of the experiment (p < 0.01). In the first 4 weeks of the experiment (weeks 75-78), the percentage of egg production was under the significant influence of the interaction effects of the experimental factors. The treatment with organic acids plus prebiotics and high-quality soybean meal (treatment 3) presented the highest egg production rate (p< 0.05). From the second week to the end of the experiment, the consumption of diets containing the combination of organic acids and probiotics and high-quality soybean meal significantly increased the weight of the produced eggs (p< 0.05). The interaction effects of experimental treatments during the experimental period did not show a constant trend in the weight of produced eggs (p≥ 0.05). Adding the combination of organic acids and probiotics to the diet elevated egg mass in the entire experimental period, the difference of which was significant (p< 0.05). The use of soybean meal with low-protein soybean meal in the diet during the experimental period decreased the weight of the egg mass compared to the group consuming the diet containing high- quality soybean meal (p< 0.05). Adding the combination of organic acids and probiotics and the use of high-quality soybean meal in the diet of the studied laying hens improved the FCR during the test period (p< 0.05). The FCR in the first 5 weeks of the experiment was under the interaction effects of the experimental factors (p < 0.05). Abdominal fat at the beginning (age 73 weeks) and the end of the experiment (age 85 weeks) did not show significant differences between different treatments (p≥ 0.05). Cellular immune response to DNCB injection significantly increased using the organic acids and prebiotic mixture and decreased with the presence of low-protein soybean meal in the diet (p < 0.05). The microbial population of the cecum changed significantly under the influence of the interaction effects of the mixture of organic acids and prebiotics and the quality of the feed soup (p < 0.05). The use of a mixture of organic acids and prebiotics caused a significant increase in the height of the duodenal villi (p< 0.05). The presence of low-protein soybean meal in the diet significantly elevated the depth of crypts (p< 0.05). The ratio of villus height to crypt depth changed under the significant influence of the interaction effects of the experimental factors. The highest ratio was recorded in the treatment with a mixture of organic acids and prebiotics and high-quality soybeans in the diet while the lowest ratio was measured in the treatment without a mixture of organic acids and prebiotics and low-protein soybeans in the diet (p< 0.05). The width of the duodenal villi did not change under the influence of experimental factors, with no significant differences (p≥ 0.05). Conclusion: In general, the results showed that using a combination of organic acids and probiotics in the diet of laying hens improved their productive performance and the health of their digestive system, as well as the performance of chickens fed with low-protein soybean meal. [ABSTRACT FROM AUTHOR]