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Hazelnuts are widely employed in various dietary practices, making them one of the most frequently utilized nuts. This study morphologically, chemically, and molecularly characterized a new hazelnut genotype throughout the 2018 to 2020 growing seasons. The variety burst leaf buds between 10th and 15th April and reached harvest maturity between 5th and 15th September. The genotype bore a mean of 2.33 nuts per cluster, with the majority of clusters consisting of double and triple nuts. The means of the nut weight was 2.38 g, the kernel weight was 1.35 g, the kernel ratio was 56.81%, the shell thickness was 0.96 mm, the nut size was 18.32 mm, the kernel size was 14.77 mm, the good kernel ratio was 91.7%, the protein content was 13.5%, the oil content was 55.8%, the oleic acid ratio was 81.43%, and the linoleic acid ratio was 10.68%. The genetic similarity rate between the new hazelnut genotype and the standard Çakıldak, Palaz, Tombul cultivars, as well as randomly selected Çakıldak hazelnut clones from the region, ranged from 0.58 to 0.98. Additionally, the polymorphism rate varied from 45.5 to 100%. On average, the investigated hazelnut genotype exhibited a genetic distinctiveness of 38% compared to randomly selected Çakıldak clones from the same region, and 47% compared to standard hazelnut cultivars. Consequently, this genotype could serve as valuable genetic material for hazelnut breeding programs through genetic distinctiveness and promising nut quality, and could potentially be registered as a new cultivar. [ABSTRACT FROM AUTHOR]

European hazelnut (Corylus avellana) is an anemophilous, dichogamous, self-incompatible tree nut species. It is native to a large portion of Europe, Turkey, and the Caucasus region, across which a wealth of plant genetic resources is present. The objective of this study was to evaluate the genetic diversity of a core set of C. avellana representing the world's germplasm using genotyping-by-sequencing derived single nucleotide polymorphism (SNP) markers and to classify novel eastern filbert blight (EFB) resistant or tolerant accessions. Two-hundred-twenty-two accessions underwent next-generation sequencing (NGS) to generate SNP markers. From this, 1,250 SNP markers were used to construct a neighbor-joining (NJ) dendrogram and perform a STRUCTURE and discriminant analysis of principal coordinates (DAPC) analyses. In the dendrogram, five major groups were established, which generally corresponded to geographic origins of the plant materials studied. In STRUCTURE, support was found for groupings at (K) = 3, (K) = 6, and (K) = 10 populations, with the greatest Δ-(K) value occurring at (K) = 10. Although the three different analyses indicated slightly different solutions, the overall results were generally consistent from the standpoint of identifying similar accession groupings. For many of the accessions, recorded origins tended to correspond with their genetic grouping, although there was also evidence of intermixing and likely movement of plant materials. Interestingly, in all three analyses, a vast majority of the new accessions from the Republic of Georgia formed their own distinct group, highlighting this geographic region as a unique pool of C. avellana genetic resources. Overall, EFB resistant/tolerant accessions were placed across a wide range of genetic backgrounds. Thus, our results indicate EFB resistance/tolerance is present across a wide spectrum of C. avellana genetic resources, with the Georgian accessions representing a new and relatively unique germplasm pool that can be incorporated into hazelnut breeding programs. [ABSTRACT FROM AUTHOR]

Food processing can alter protein biochemical properties, impacting immunoreactivity and allergenicity. A key feature of food allergens is their resistance to enzymatic digestion, particularly by pepsin and trypsin. This study compares the digestomes of raw and heat- and/or pressure-treated peanuts, hazelnuts, pistachios and cashews using the INFOGEST harmonized digestion protocol and analyzing their IgE-binding capacity through in vitro methods. Protein patterns from controls and digestomes were resolved by SDS-PAGE and tested with sera from allergic patients, confirmed by competitive ELISA for hazelnuts and peanuts. The results indicate that processing methods differently affect the gastrointestinal (GI) digestion of these allergens. Simulated GI digestion caused a significant destruction of protein structures, reducing but not eliminating IgE reactivity for all four nuts. Boiling for 60 min did not change the SDS-PAGE profiles, but it did stimulate enzymatic activity, decreasing IgE binding capacity. In contrast, applying heat and pressure led to a nearly complete inhibition of allergenic potential during simulated digestion. These findings suggest that employing intense food processing techniques and investigating the gastrointestinal effects of highly allergenic nuts could be crucial steps toward developing new hypoallergenic formulations. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agriculture & Nature / Kahramanmaraş Sütçü İmam Üniversitesi Tarım & Doğa Dergisi is the property of Kahramanmaras Sutcu Imam Universitesi 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.)

High-value products, such as hazelnuts, are particularly vulnerable to fraud due to their price dependence on geographical origin. Guaranteeing hazelnuts' authenticity is essential for consumer trust and safety. Stable isotope analysis has become a reference method for origin authentication as it is reliable, robust, and easily transferable across laboratories. However, multiple isotopic markers coupled with chemometric techniques are often needed to authenticate food provenance accurately. In this study, we focused on assessing the potential of bulk δ18O, along with δ2H and δ13C of the main fatty acids, as hazelnut-origin authenticity markers. PLS-DA classification models were developed to differentiate samples (n = 207) according to their region of origin. This multi-isotopic approach provided promising external validation results, achieving a 94% global correct classification rate in discriminating hazelnuts from regions with distinct geographical and environmental conditions. This study lays the groundwork for further model development and evaluation across additional production areas and harvest years. [ABSTRACT FROM AUTHOR]

Beauveria bassiana has distinct nutrient requirements depending on the growth stage, with the mycelial growth stage being particularly nutrient-intense. When nutrients are exhausted, B. bassiana produces numerous spores that re-germinate and release visible hyphae under suitable environmental conditions. This study aimed to use low-cost agricultural by-products for developing an optimized sporulation medium. Single-factor experiments revealed that potato, wheat bran, and wheat had the greatest influence on sporulation after 14 d of culture. Wheat, wheat bran, and corncob had the strongest effect on spore production. Using a mathematical model and Box–Behnken design, the maximum predicted sporulation using the stock medium was 5.55 × 106/mL. The optimized formula comprised 54.82 g potato, 77.74 g wheat bran, and 101.48 g wheat. The actual stock medium produced a spore yield of 5.52 × 106/mL. Similarly, the maximum predicted sporulation was 15.66 × 106/mL for the culture medium. The optimized formula comprised 50.81 g wheat, 99.6 g wheat bran, and 112.59 g corncob, with a spore yield of 15.69 × 106/mL. The high consistency between predicted and experimental values indicated that our model can accurately determine the effect of medium on sporulation. [ABSTRACT FROM AUTHOR]

The present study investigates gross alpha (GA) radioactivity levels in hazelnut kernels purchased from markets in Türkiye. 10 different hazelnut samples were crushed and made ready for counting. The alpha counts were obtained via ELSEC 7286 low level alpha counter with ZnS scintillator and EMI 6097B photomultiplier tube. The samples were placed in front of the detector to acquire the counts. All samples were counted isochronously. In addition to the GA activity measurement, total annual effective dose (AED) value for different age groups owing to ingestion was calculated for each sample. It was observed that the GA radioactivity levels in the samples were quite low, and total AED values were considerably lower than the WHO worldwide average AED value (290 μSv/year). [ABSTRACT FROM AUTHOR]

Hazelnut represents a significant agricultural plant cultivated in numerous countries worldwide. Hazelnuts are quite rich in macro- and micro-components. They are highly susceptible to growth of fungi with development of mycotoxins. Among the mycotoxins, ochratoxin A (OTA) is one of the most prevalent contaminants found in a variety of food products. OTA is produced by various fungi including those from genera Aspergillus and Penicillium. Awareness is created regarding hazelnuts and OTA through a comprehensive analysis of the existing literature obtained from the Web of Science (Clarivate, Philadelphia, Pennsylvania, USA). This review provides a comprehensive summary of the chemical structure of OTA, its effects on health, applied detoxification methods and analytical methods. While the current research advances our understanding of hazelnuts and OTA, the feasibility of appropriate analysis methods underscores the need for further research and OTA studies in hazelnuts to confirm findings as well as to establish safe and effective practices. [ABSTRACT FROM AUTHOR]

Beneficial effects of hazelnuts on human health are well known, and recent research on heart health has generated more interest. However, studies based on its oxidative damage preventive effect are not well explained in patients with diabetes mellitus (DM). Therefore, the aim of this study was to investigate the protective effect of hazelnut against oxidative stressinduced damage in hepatic ischemia/reperfusion (I/R) injury in rats induced by streptozotocin (STZ). Rats were divided into four groups (Control, DM, DM+I/R, DH; n=6 in each). The I/R model was created four weeks after DM was induced in rats. In four weeks until the I/R model was created, the DM+I/R+Hazelnut group was fed with pellet feed (2 g/100 g/day) prepared with hazelnut. At the end of experiment, glutathione (GSH) and malondialdehyde (MDA) levels in liver tissue, tumor necrosis factor-α (TNF-α), and interleukin 6 (IL-6) levels were measured in serum. The results showed that TNF-α, IL-6, and MDA levels increased significantly in the DM+I/R group, while this increase was less in the DM+I/R+Hazelnut group. It is concluded that hepatic I/R damage caused increased inflammatory response and oxidative stress in diabetic rats, and this response was decreased/modulated by the pre-treatment with hazelnuts. [ABSTRACT FROM AUTHOR]

The present study aimed to produce frozen dessert containing plant-based milk (almond, hazelnut, and lupine) and the probiotic Lb. acidophilus bacteria and to evaluate the chemical, microbiological and sensory properties during the 90 day-storage. Frozen dessert antioxidant capacity at day 0 and 90 of evaluation and changes in the phenolic compounds based on variations between different species were significant (p < 0.05). The differences in Lb. acidophilus counts between storage days were significant and values ranged from 4.15–8.99 log CFU/mL on the first day of storage to 3.61–7.06 at the end of the storage. Regarding the results of general acceptability in sensory evaluation, the highest color, taste and aroma scores was determined on day 0 in the hazelnut-lupine milk frozen dessert sample whereas the lowest was determined on day 30 in the almond-lupine milk frozen dessert sample. The samples with the highest antioxidant capacity were found on day 90 day in lupine frozen dessert (87.28 ± 0.007 mM) whereas the samples with the lowest antioxidant capacity were found on day 0 in the almond-hazelnut-lupine frozen dessert (18.83 ± 4.56 mM). Plant-based milk is considered suitable for the main ingredients in ice cream production, due to its health benefits its potential to be consumed as frozen dessert. [ABSTRACT FROM AUTHOR]

Background. The problem of obtaining certified planting material with biotechnological methods is important for expanding commercial and homestead plantations of hazelnut cultivars in Belarus. Materials and methods. Regenerated plants of cv. ‘Akademyk Yablokov’, representing the genus Corylus L., were a model object for studying in vitro morphogenesis and effectiveness of antibiotics against bacterial contamination, so that a protocol could be developed to obtain healthy planting material of hazelnut cultivars. The plants produced during this study were included in the duplicate ex situ collection of nut crops preserved in vitro in the active growth state. Results. Single exposure to the antibiotic kanamycin monosulfate at a concentration of 100 mg/L during antibiotic therapy in the stage of in vitro micropropagation eliminated bacterial infection in 83.3% of regenerated plants, and twofold exposure in 100%. Further cultivation revealed its phytotoxic aftereffect manifested in the form of necrosis on most of the regenerated plants and a decrease in the activity of gemmogenesis and growth. Neither single nor twofold exposure to cefotaxime sodium salt at a concentration of 90 mg/L caused elimination of bacterial infection, but gemmogenesis and regenerated plant growth retained their activity during subsequent cultivation on antibiotic-free media. The best development parameters were observed on a modified Murashige–Skoog medium with 6 mg/L 6-BA, 0.01 mg/L IBA, and 0.1 mg/L GA3 (average number of shoots: 2.2; number of microcuttings: 2.3), and a modified DKW medium with 6 mg/L 6-BA, 0.01 mg/L IBA, and 0.1 mg/L GA3 (average number of shoots: 2.05; microcuttings: 2.9). The use of zeatin as a cytokinin to stimulate adventitious morphogenesis or activate the growth of axillary meristems at a concentration of 5 or 6 mg/L was not as effective as 6-BA.

Hazelnut (Corylus avellana L.), one of the world's major tree nut crops, is widely produced in Iran, with an annual yield of more than 21,500 tons of hazelnuts. A survey of hazelnut orchards in Iran was conducted during 2021-2022, revealing the presence of root tumors on hazelnut trees in Guilan (northern Iran), Mazandaran (northern Iran), Qazvin (northwestern Iran), and Qom (north-central Iran) provinces. Samples of these root tumors were collected for further analysis. Isolations from fresh galls on SNA, D1M, IA, LB, and SC culture media yielded predominant colonies similar to Agrobacterium, which were subsequently purified and characterized. All 29 strains isolated were Gram-negative, rod-shaped, obligate aerobic, motile, and tested positive for oxidase, catalase, arginine dihydrolase, and urease. However, they did not hydrolyze starch, gelatin, or esculin, but did hydrolyze Tween-80 and urea. They exhibited growth on 2% NaCl and at 35°C, and were able to produce 3-ketolactose but not indole, DNase, pectinase, levan, or reduce nitrate. Furthermore, 11 representative strains were randomly selected for PCR amplifications of T-DNA genes using specific primers At1/At2, F8360/F8361, and tms2F1/tms2R2, resulting in 338, 453, and 617 bp amplicons, respectively. In pathogenicity tests, bacterial strains were inoculated into tomato, hazelnut, sunflower seedlings, and carrot discs, leading to the formation of tumors on plant stems and callus on carrot discs. Based on phenotypic, physiological, and biochemical properties, pathogenicity tests, and molecular methods, the bacterium responsible for causing root gall in hazelnut trees was identified as A. tumefaciens biovar 1. This bacterial root gall appears to be widespread among various local hazelnut cultivars (Gerd-e-Eshkavar, Alamout, Tarom, etc.), with a higher prevalence in old hazelnut orchards with stony soils. This study represents the first report of root gall on hazelnut trees grown in Iran. It was observed that the number of sites where tumors have developed and the number of galls present in old hazelnut orchards with stony soils are higher.

Objective: In order to solve the phenomenon of low mechanical shelling efficiency and high kernel breakage rate of hazelnut, a vertical cone shell breaking machine was designed with automatic adjustment of clearance through compression spring. Methods: The key structure of the shell breaker was composed of three core components: the vertical cone inner roller, the slatted screen outer roller and the pressure spring device, and the stress of the hazelnuts in the shelling cavity of the shell breaker was analyzed. Results: The main parameters of the vertical cone hazelnut shell breaker were determined: the taper of the uniform cone was 30°, the inclination angle of the inner roller bus was 75°, the half cone angle was 15°, the surface groove was spiral, the groove depth was 3 mm, the inclination angle of the outer roller bus was 73°, the half cone angle was 17°, the free stroke of the compression spring design was 230 mm, the middle warp was 160 mm, the wire diameter was 24 mm, the effective number of turns was 6, the total number of turns was 8, and the effective speed range of the inner roller was 229.2～881.5 r/min. Conclusion: This design can automatically adjust the compression amount of the vertical cone shell breaker and adjust the shell breaking gap through the feeding amount, which can adapt to the fruit shape size of different hazelnuts, so that the hazelnut shelling efficiency and kernel preparation rate can be improved.

Food allergy (FA) affects approximately 6–8% of young children, with a peak prevalence at approximately one year of age. Tree nut and peanut allergies are among the main causes of anaphylaxis in the world. The gold standard for the diagnosis of FAs is the oral food challenge (OFC). Other diagnostic tests used in the clinical practice are skin prick tests (SPTs) and laboratory tests to measure out the presence of serum specific IgE (sIgE). In this narrative review, we collect the current evidence of the predictive value (PV) of SPTs and sIgE for the outcome of the OFCs. In literature, data are conflicting as to whether increasing sIgE concentration and wheal size in SPTs correlate with OFC outcomes. Most studies included in our review have shown that in vivo and in vitro tests may predict OFC outcomes with variable PV, but data are not conclusive; therefore, the OFC currently remains the gold standard for FA diagnosis. [ABSTRACT FROM AUTHOR]

Viili is ropey and sticky traditional fermented milk that originated in Scandinavia. In this study, raw hazelnut milk (HM) with a nutritionally rich composition was used in developing new plant-based fermented products by using Viili starter cultures in order to produce health-promoting and functional plant-based dairy-like products. For this purpose, physicochemical, microbiological, and sensory properties were determined by producing Viili yogurt from both raw cow milk (VY) and fermented HM. Microbial analysis results showed that the defined formulation yielded high probiotic survivals (6.68–7.14 log CFU/g of TMAB, 6.90–7.85 log CFU/g of yeast-mold, 5.80–7.91 log CFU/g of LAB, and 5.14–7.60 log CFU/g of Lactococcus spp.) during the storage period. Sensory analysis showed that the properties of FHM such as color and appearance, structure, consistency, flavor, and odor were less appreciated than VY, whereas some other properties were found to be sufficient for consumption. [ABSTRACT FROM AUTHOR]

Introduction: A healthy daily diet and consuming certain nutrients, such as polyphenols, vitamins, and unsaturated fatty acids, may help neuronal health maintenance. Polyphenolic chemicals, which have antioxidant and anti-inflammatory properties, are involved in the neuroprotective pathway. Because of their nutritional value, nuts have been shown in recent research to be helpful in neuroprotection. Objective: Hazelnut is often consumed worldwide in various items, including processed foods, particularly in bakery, chocolate, and confectionery products. This nut is an excellent source of vitamins, amino acids, tocopherols, phytosterols, polyphenols, minerals, and unsaturated fatty acids. Consuming hazelnut may attenuate the risk of neurodegenerative disorders including Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, multiple sclerosis, and Huntington's disease due to its anti-inflammatory and anti-oxidant qualities. Results: Many documents introduce hazelnut as an excellent choice to provide neuroprotection against neurodegenerative disorders and there is some direct proof of its neuroprotective effects. Discussion: So hazelnut consumption in daily diet may reduce neurodegenerative disease risk and be advantageous in reducing the imposed costs of dealing with neurodegenerative diseases. [ABSTRACT FROM AUTHOR]

Turkish hazelnut (Corylus avellana L. cv Tombul) is a widely used nut in the chocolate industry and is also rich in polyphenol content, which promises anticancer effects. The anti-cancer and apoptotic effects of hazelnut leaves extracts examined on lung and breast cancer cells. Sulforhodamine B (SRB) and Adenosine 5'- triphosphate (ATP) assays were carried out for cell viability measurement. The mode of cell death was shown morphologically by the double fluorescence staining. Apoptosis was determined by performing caspase-mediated cytokeratin 18 (M30 ELISA) and western blot analysis. PARP, caspase 3, caspase 8, DR4, and GAPHD (Glyceraldehyde-3-phosphate Dehydrogenase) protein bands were visualized as markers of apoptosis. A wound healing test was employed to measure cell migration. Methanol extract of hazelnut leaf exhibited inhibition of cell growth activities in a dose-dependent manner. IC50 values were determined as 32.17 µg/ml in MCF-7, 32.16 µg/ml in MDA-MB-231, 20.40 µg/ml in A549 and 12.04 µg/ml in H1299 cells for ethanol extract while it was determined as 21.08 µg/ml in MCF-7, 40.16 µg/ml in MDA-MB-231, 22.04 µg/ml in A549 and 5.91 µg/ml in H1299 cells in methanol extract. In comparison, methanol leaf extracts were more effective in H1299 cells (IC50 value was 5.91 µg/ml).In comparison, ethanol leaf extracts were more effective in H1299 cells (IC50 value was 9.722 µg/ml). Western blot analysis demonstrated that hazelnut leaf extract treatment of cancer cells led to cell death via apoptosis and inhibited cell migration in lung and breast cancer cell lines. The cytotoxic effects of hazelnut extract on breast and lung cancer cells might be valuable and promising in elucidating cell death mechanisms for the development of new methods in cancer treatment. [ABSTRACT FROM AUTHOR]

In order to study plant bugs fauna, investigations were carried out during 2021-2023 in hazelnut orchards in Guilan province, Iran. Insect samples were collected by using an insect net by hitting the branches of hazelnut trees and sweeping the host plants grown at the base of hazelnut trees in hazelnut orchards. A total of 23 species from the subfamilies Mirinae (13 species), Orthotylinae (5 species), Phylinae (3 species) and Deraeocorinae (2 species) were collected and identified. Among collected species, 9 species are herbivores (39%), 12 species predators (52%), and 2 species have dual predator/herbivory behavior (9%). The following identified species has been listed based on subfamilies. They are reported for the first time from the hazelnut orchards of Guilan province. In order to facilitate the identifications, a brief description and digital images of the dorsal habitus of each species were prepared. This study has been conducted for the first time in Iran’s hazelnut cultivation areas. Deraeocorinae Douglas & Scott, 1865: Deraeocoris (Knightocapsus) lutescens (Schilling, 1837), Deraeocoris (Camptobrochis) serenus (Douglas & Scott, 1868), Mirinae Hahn, 1833: Adelphocoris lineolatus (Goeze, 1778), Adelphocoris ticinensis (Meyer-Dür, 1843), Charagochilus gyllenhali (Fallén, 1807), Closterotomus costae (Reuter, 1888), Megaloceroea recticornis (Geoffroy, 1785), Mermitelocerus schmidtii (Fieber, 1836), Miris persicus (Reuter 1876), Phytocoris (Ktenocoris) varipes Boheman, 1852, Phytocoris (Ktenocoris) insignis Reuter, 1876, Phytocoris (Exophytocoris) scitulus scitulus Reuter, 1908, Stenodema (Brachystira) calcarata (Fallén, 1807), Stenodema (Stenodema) laevigata (Linnaeus, 1758), Stenotus binotatus (Fabricius, 1794), Orthotylinae Van Duzee, 1916: Globiceps (Globiceps) coryli Putshkov, 1970, Blepharidopterus angulatus (Fallén, 1807), Blepharidopterus diaphanus (Kirschbaum, 1856), Malacocoris chlorizans (Panzer, 1794), Reuteria kiritshenkoi Muminov, 1964, Phylinae Douglas & Scott, 1865: Orthonotus rufifrons (Fallén, 1807), Pilophorus confusus (Kirschbaum, 1856), Plagiognathus (Plagiognathus) fulvipennis (Kirschbaum, 1856). [ABSTRACT FROM AUTHOR]

Interest in bioenergy, in particular the use of biomass, has increased significantly in recent years due to increasing climate and economic concerns. As one of the key renewable energy sources, biomass plays an important role in the new energy framework. The aim of this research was to estimate the mass of woody husks and to check the influence of morphological features of selected hazelnut varieties on the energy parameters of waste biomass in the form of husk. Technical and elemental analyses were carried out on the husks of four varieties: 'Kataloński', 'Olbrzymi z Halle', 'Olga', and 'Webba Cenny', taking into account their weight, moisture content, heat of combustion (HHV and LHV), and pollutant emission factors (CO, CO2, NOx, SO2, Dust). Research has shown significant differences between the varieties in terms of their energy potential and pollutant emissions. The varieties 'Olbrzymi z Halle' and 'Olga' were found to have higher calorific values, making them more energy efficient. On the other hand, the varieties 'Kataloński' and 'Webba Cenny' showed lower dust and NOx emissions, which is beneficial from an environmental point of view. The analysis of the chemical and morphological composition of hazelnut husks allowed for the identification of relationships between morphological features and energy value and emission indicators. The conclusions from the conducted research suggest that hazelnut husks have significant potential as an energy raw material. The selection of an appropriate variety for energy crops should take into account both the calorific value and emission indicators, which will allow for the optimization of production processes and the promotion of sustainable development. [ABSTRACT FROM AUTHOR]

Eastern filbert blight (EFB), caused by Anisogramma anomala, is the primary limiting factor for hazelnut (Corylus sp.) production in the United States. In this study, 82 cultivars and selections shown to be resistant or tolerant to EFB in Oregon were field planted in New Jersey in 2017 and 2019 and evaluated for their EFB response under high disease pressure. The trees carry known single resistance (R) genes with most mapped to their respective linkage groups (LG), including LG2, LG6, and LG7, or they express quantitative resistance (QR, horizontal resistance). Disease incidence and severity was documented, stem cankers counted and measured, and the proportion of diseased wood calculated. The EFB disease response of some cultivars/selections varied considerably between New Jersey and Oregon while others were consistent. Trends were observed in relation to resistance source origin and LGs, which provide insight into durability and usefulness of resistance. In striking contrast to Oregon, nearly all selections with R-genes mapped to LG6, including those carrying the ‘Gasaway’ resistance allele, exhibited severe EFB infections (232 of 266 [87%]). This finding is of consequence since the U.S. hazelnut industry currently relies solely on LG6 resistance for EFB resistance. Further, for the first time, EFB was observed on several selections carrying LG7 resistance, specifically offspring of ‘Ratoli’ from Spain. Interestingly, selections carrying LG7 resistance from origins other than ‘Ratoli’ remained free of EFB, with one exception, all selections carrying LG2 (n=9) resistance also remained free from EFB. Interestingly, the EFB responses of selections expressing QR (n=26) more closely resembled the disease phenotypes they exhibited in Oregon. Overall, the divergence in EFB response between Oregon and New Jersey, where pathogen populations differ, supports the presence of pathogenic variation in A. anomala and highlights potential limitations of using single R-genes to manage the disease. Results also suggest trees expressing QR may be more stable across pathogenic populations. [ABSTRACT FROM AUTHOR]

Turkey is the leading producer of hazelnuts, contributing to 62% of the total global production. Among 18 distinct local hazelnut cultivars, Giresun Tombul is the only cultivar that has received Protected Designation of Origin denomination from the European Comission (EC). However, there is currently no practical objective method to ensure its geographic origin. Therefore, in this study NIR and Raman spectroscopy, along with chemometric methods, such as principal component analysis, PLS‐DA (partial least squares‐discriminant analysis), and SVM‐C (support vector machine‐classification), were used to determine the geographical origin of the Giresun Tombul hazelnut cultivar. For this purpose, samples from unique 118 orchards were collected from eight different regions in Turkey during the 2021 and 2022 growing seasons. NIR and Raman spectra were obtained from both the shell and kernel of each sample. The results indicated that hazelnut samples exhibited distinct grouping tendencies based on growing season regardless of the spectroscopic technique and sample type (shell or kernel). Spectral information obtained from hazelnut shells demonstrated higher discriminative power concerning geographical origin compared to that obtained from hazelnut kernels. The PLS‐DA models utilizing FT‐NIR (Fourier transform near‐infrared) and Raman spectra for hazelnut shells achieved validation accuracies of 81.7% and 88.3%, respectively, while SVM‐C models yielded accuracies of 90.9% and 86.3%. It was concluded that the lignocellulosic composition of hazelnut shells, indicative of their geographic origin, can be accurately assessed using FT‐NIR and Raman spectroscopy, providing a nondestructive, rapid, and user‐friendly method for identifying the geographical origin of Giresun Tombul hazelnuts. Practical Application: The proposed spectroscopic methods offer a rapid and nondestructive means for hazelnut value chain actors to verify the geographic origin of Giresun Tombul hazelnuts. This could definitely enhance consumer trust by ensuring product authenticity and potentially help in preventing fraud within the hazelnut market. In addition, these methods can also be used as a reference for future studies targeting the authentication of other shelled nuts. [ABSTRACT FROM AUTHOR]

Mapping hazelnut orchards can facilitate land planning and utilization policies, supporting the development of cooperative precision farming systems. The present work faces the detection of hazelnut crops using optical and radar remote sensing data. A comparative study of Machine Learning techniques is presented. The system proposed utilizes multi-temporal data from the Sentinel-1 and Sentinel-2 datasets extracted over several years and processed with cloud tools. We provide a dataset of 62,982 labeled samples, with 16,561 samples belonging to the ‘hazelnut’ class and 46,421 samples belonging to the ‘other’ class, collected in 8 heterogeneous geographical areas of the Viterbo province. Two different comparative tests are conducted: firstly, we use a Nested 5-Fold Cross-Validation methodology to train, optimize, and compare different Machine Learning algorithms on a single area. In a second experiment, the algorithms were trained on one area and tested on the remaining seven geographical areas. The developed study demonstrates how AI analysis applied to Sentinel-1 and Sentinel-2 data is a valid technology for hazelnut mapping. From the results, it emerges that Random Forest is the classifier with the highest generalizability, achieving the best performance in the second test with an accuracy of 96% and an F1 score of 91% for the ‘hazelnut’ class.

The initiation of cultivars for hazelnut micropropagation from mature field-grown plants is challenging due to high contamination levels and low regeneration rates. This study aimed to develop an efficient protocol for establishing in vitro cultures, the crucial first step in hazelnut micropropagation. Three independent experiments were conducted to achieve this goal. In the first experiment, plant materials were collected directly from the field at different times of the year to initiate cultures, with July to August identified as the most suitable period. In the second experiment, one-year-old potted suckers underwent a sanitation program in the greenhouse and were subjected to thermotherapy in the growth chamber before being utilized as explant sources. Nodal explants obtained from these plants were then used to initiate cultures. In the third experiment, various doses and durations of sterilization agents were applied to optimize surface sterilization. The combination of 1% silver nitrate (AgNO3), 0.1% mercury chloride (HgCl2), and 3% hydrogen peroxide (H2O2) after treatments with 70% ethanol and 2% sodium hypochlorite (NaOCl) yielded the best results, with the highest percentage of viable shoots. Overall, thermotherapy treatment to the mother plant was the most effective method for initiating cultures from plants in highly contaminated environments. While cultures initiated with explants from field-grown plants exhibited 53.7% visually clean shoots, this rate increased to 97.4% in plants subjected to thermotherapy. This study, for the first time, evaluated the effectiveness of applying thermotherapy to mother plants to reduce the incidence of microbial contaminants in the establishment stage of hazelnut in vitro propagation.Key message: The present study revealed that applying thermotherapy to mother plants effectively reduces microbial contamination during in vitro culture establishment and enhances overall culture success. [ABSTRACT FROM AUTHOR]

Copyright of Journal of World Geography & Development Perspectives / Dünya Coğrafyası ve Kalkınma Perspektifi Dergisi is the property of Ataturk University Coordinatorship of Scientific Journals 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.)

Mapping hazelnut orchards can facilitate land planning and utilization policies, supporting the development of cooperative precision farming systems. The present work faces the detection of hazelnut crops using optical and radar remote sensing data. A comparative study of Machine Learning techniques is presented. The system proposed utilizes multi-temporal data from the Sentinel-1 and Sentinel-2 datasets extracted over several years and processed with cloud tools. We provide a dataset of 62,982 labeled samples, with 16,561 samples belonging to the ‘hazelnut’ class and 46,421 samples belonging to the ‘other’ class, collected in 8 heterogeneous geographical areas of the Viterbo province. Two different comparative tests are conducted: firstly, we use a Nested 5-Fold Cross-Validation methodology to train, optimize, and compare different Machine Learning algorithms on a single area. In a second experiment, the algorithms were trained on one area and tested on the remaining seven geographical areas. The developed study demonstrates how AI analysis applied to Sentinel-1 and Sentinel-2 data is a valid technology for hazelnut mapping. From the results, it emerges that Random Forest is the classifier with the highest generalizability, achieving the best performance in the second test with an accuracy of 96% and an F1 score of 91% for the ‘hazelnut’ class. [ABSTRACT FROM AUTHOR]

Copyright of Kastamonu University Journal of Economics & Administrative Sciences Faculty / Kastamonu Üniversitesi Iktisadi ve Idari Bilimler Fakültesi Dergisi is the property of Kastamonu University 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.)

A hazelnut-based fermented creamy structure was developed from whole hazelnut kernels in the scope of plant-based food production. Firstly, heat-induced and acid-induced gelation of aqueous slurries of raw or roasted hazelnut kernels were investigated. The final structure was formed by heat treatment and fermentation by yoghurt culture along with supplementary sucrose. A stabilizer mixture of locust bean gum and xanthan gum was needed to prevent phase separation. Roasting treatment of hazelnuts reduced the temperature and increased the pH at which gelation started; however, a weak gel was obtained. On the other hand, fermentation of raw hazelnuts resulted in a gel structure with higher strength, yield stress, flow point and spreadability. Phase separation was not observed in the structures during storage. Viable lactic acid bacteria count was above 6 log cfu/g in the samples and a slight decrease was observed after storage at 4°C. Soluble protein content in the samples was reduced by roasting and fermentation but increased after storage. Roasting enhanced allergenicity of the water-soluble fraction while fermentation decreased it by about 70%. Raw hazelnuts are recommended for preparation of stable fermented gel structures with reduced allergenicity towards plant-based food production. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agriculture & Nature / Kahramanmaraş Sütçü İmam Üniversitesi Tarım & Doğa Dergisi is the property of Kahramanmaras Sutcu Imam Universitesi 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 Modern Food Science & Technology is the property of Editorial Office of Modern Food Science & Technology 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 Food & Machinery is the property of Food & Machinery 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 production of "Nocciola Romana" hazelnuts in the province of Viterbo, Italy, has evolved into a highly efficient and profitable agro-industrial system. Our approach is based on a hierarchical framework utilizing aggregated data from multiple temporal data and sources, offering valuable insights into the spatial, temporal, and phenological distributions of hazelnut crops To achieve our goal, we harnessed the power of Google Earth Engine and utilized collections of satellite images from Sentinel-2 and Sentinel-1. By creating a dense stack of multi-temporal images, we precisely mapped hazelnut groves in the area. During the testing phase of our model pipeline, we achieved an F1-score of 99% by employing a Hierarchical Random Forest algorithm and conducting intensive sampling using high-resolution satellite imagery. Additionally, we employed a clustering process to further characterize the identified areas. Through this clustering process, we unveiled distinct regions exhibiting diverse spatial, spectral, and temporal responses. We successfully delineated the actual extent of hazelnut cultivation, totaling 22,780 hectares, in close accordance with national statistics, which reported 23,900 hectares in total and 21,700 hectares in production for the year 2022. In particular, we identified three distinct geographic distribution patterns of hazelnut orchards in the province of Viterbo, confined within the PDO (Protected Designation of Origin)-designated region. The methodology pursued, using three years of aggregate data and one for SAR with a spectral separation clustering hierarchical approach, has effectively allowed the identification of the specific perennial crop, enabling a deeper characterization of various aspects influenced by diverse environmental configurations and agronomic practices.The accurate mapping and characterization of hazelnut crops open opportunities for implementing precision agriculture strategies, thereby promoting sustainability and maximizing yields in this thriving agro-industrial system. [ABSTRACT FROM AUTHOR]

The research aimed to survey the composition of oil and partially defatted cakes obtained by cold-pressing various tree nuts to enable their use as ingredients for modulating the nutritional properties of final food products. Different types of pistachios (Pistacia vera) , hazelnuts (Corylus avellana) , and apricot kernels (Prunus armeniaca) were evaluated in terms of colour, water activity, moisture, ash, fat, protein, fibre, total phenolic, and tocopherol contents. They were extracted by hydraulic presses, giving oils rich in vitamin E and defatted cakes with high nutritional potential: the cakes preserved significant antioxidant compounds, as well as fat, protein, and fibre levels based on the oil extraction yield. Products derived from cold-pressed nuts revealed promising compositions that could be exploited to develop healthy foods with improved sensorial and techno-functional properties, increasing the sustainability of the process and zeroing waste. [ABSTRACT FROM AUTHOR]

Eastern filbert blight (EFB), caused by Anisogramma anomala, is the primary limiting factor for hazelnut (Corylus sp.) production in the United States. In this study, 82 cultivars and selections shown to be resistant or tolerant to EFB in Oregon were field planted in New Jersey in 2017 and 2019 and evaluated for their EFB response under high disease pressure. The trees carry known single resistance (R) genes with most mapped to their respective linkage groups (LG), including LG2, LG6, and LG7, or they express quantitative resistance (QR, horizontal resistance). Disease incidence and severity was documented, stem cankers counted and measured, and the proportion of diseased wood calculated. The EFB disease response of some cultivars/selections varied considerably between New Jersey and Oregon while others were consistent. Trends were observed in relation to resistance source origin and LGs, which provide insight into durability and usefulness of resistance. In striking contrast to Oregon, nearly all selections with R-genes mapped to LG6, including those carrying the ‘Gasaway’ resistance allele, exhibited severe EFB infections (232 of 266 [87%]). This finding is of consequence since the U.S. hazelnut industry currently relies solely on LG6 resistance for EFB resistance. Further, for the first time, EFB was observed on several selections carrying LG7 resistance, specifically offspring of ‘Ratoli’ from Spain. Interestingly, selections carrying LG7 resistance from origins other than ‘Ratoli’ remained free of EFB, with one exception, all selections carrying LG2 (n=9) resistance also remained free from EFB. Interestingly, the EFB responses of selections expressing QR (n=26) more closely resembled the disease phenotypes they exhibited in Oregon. Overall, the divergence in EFB response between Oregon and New Jersey, where pathogen populations differ, supports the presence of pathogenic variation in A. anomala and highlights potential limitations of using single R-genes to manage the disease. Results also suggest trees expressing QR may be more stable across pathogenic populations.

Meyveler insan beslenmesinde yer alan, birçok makro ve mikro bileşen bakımından zengin önemli gıdalardır. Ülkemiz için oldukça önemli meyvelerden biri olan fındık (Corylus avellana L.), Corylus cinsine ait oldukça popüler ağaç yemişlerinden biridir. Kendine has karakteristik tat ve kokusu nedeniyle çiğ olarak tüketiminin yanı sıra birçok alanda da kullanılmaktadır. Fındık meyvesi protein, yağ ve yağ asidi kompozisyonu, vitaminler, minareller bakımından oldukça zengin bir kaynaktır. Fındık meyvesinin, kanser, diyabet, obezite, kardiyovasküler hastalıklar gibi birçok hastalığa karşı olumlu etki gösterdiği belirtilmektedir. Bu yüzden fonksiyonel bir gıda olan fındık meyvesi tüketiminin insan sağlığı üzerine olumlu etkileri olduğu düşünülmektedir. Bu derlemede fındık meyvesinin çeşitleri, bileşimi ve insan sağlığı üzerine etkileri hakkında genel bilgiler derlenmiştir.

Abstract Key message As a result of our research, we determined that Cryptosporiopsis tarraconensis—as a new species for Central Europe—is the causative agent of leaf lesions in natural populations of hazel (Corylus avellana). Until now, this species had not been described in a natural population of C. avellana or out of the temperate climate. This is the fifth notification of this rare fungus in the world and the first from Central Europe and the natural population of the host.

Beauveria bassiana has distinct nutrient requirements depending on the growth stage, with the mycelial growth stage being particularly nutrient-intense. When nutrients are exhausted, B. bassiana produces numerous spores that re-germinate and release visible hyphae under suitable environmental conditions. This study aimed to use low-cost agricultural by-products for developing an optimized sporulation medium. Single-factor experiments revealed that potato, wheat bran, and wheat had the greatest influence on sporulation after 14 d of culture. Wheat, wheat bran, and corncob had the strongest effect on spore production. Using a mathematical model and Box–Behnken design, the maximum predicted sporulation using the stock medium was 5.55 × 106/mL. The optimized formula comprised 54.82 g potato, 77.74 g wheat bran, and 101.48 g wheat. The actual stock medium produced a spore yield of 5.52 × 106/mL. Similarly, the maximum predicted sporulation was 15.66 × 106/mL for the culture medium. The optimized formula comprised 50.81 g wheat, 99.6 g wheat bran, and 112.59 g corncob, with a spore yield of 15.69 × 106/mL. The high consistency between predicted and experimental values indicated that our model can accurately determine the effect of medium on sporulation.

Food processing can alter protein biochemical properties, impacting immunoreactivity and allergenicity. A key feature of food allergens is their resistance to enzymatic digestion, particularly by pepsin and trypsin. This study compares the digestomes of raw and heat- and/or pressure-treated peanuts, hazelnuts, pistachios and cashews using the INFOGEST harmonized digestion protocol and analyzing their IgE-binding capacity through in vitro methods. Protein patterns from controls and digestomes were resolved by SDS-PAGE and tested with sera from allergic patients, confirmed by competitive ELISA for hazelnuts and peanuts. The results indicate that processing methods differently affect the gastrointestinal (GI) digestion of these allergens. Simulated GI digestion caused a significant destruction of protein structures, reducing but not eliminating IgE reactivity for all four nuts. Boiling for 60 min did not change the SDS-PAGE profiles, but it did stimulate enzymatic activity, decreasing IgE binding capacity. In contrast, applying heat and pressure led to a nearly complete inhibition of allergenic potential during simulated digestion. These findings suggest that employing intense food processing techniques and investigating the gastrointestinal effects of highly allergenic nuts could be crucial steps toward developing new hypoallergenic formulations.

High-value products, such as hazelnuts, are particularly vulnerable to fraud due to their price dependence on geographical origin. Guaranteeing hazelnuts’ authenticity is essential for consumer trust and safety. Stable isotope analysis has become a reference method for origin authentication as it is reliable, robust, and easily transferable across laboratories. However, multiple isotopic markers coupled with chemometric techniques are often needed to authenticate food provenance accurately. In this study, we focused on assessing the potential of bulk δ18O, along with δ2H and δ13C of the main fatty acids, as hazelnut-origin authenticity markers. PLS-DA classification models were developed to differentiate samples (n = 207) according to their region of origin. This multi-isotopic approach provided promising external validation results, achieving a 94% global correct classification rate in discriminating hazelnuts from regions with distinct geographical and environmental conditions. This study lays the groundwork for further model development and evaluation across additional production areas and harvest years.

Nuts consumption has increased significantly in the last 10 years, especially driven by the stimulated awareness of their possible beneficial health effects. Increased nuts consumption is linked to an obvious accumulation of by-products and waste. With the view of the circular economy, the aim of this review is to analyse the recent and innovative approaches able to valorise the by-products derived from almonds and hazelnuts, two important nut products of the Italian scene, with historical and traditional importance. The most important solutions are concerned with reuse of almond hull, shell, skin, oil cake, and hazelnut shell; skin and oil cake are often considered waste or by-products. Many interesting implications in the feed and food sectors have been detected in the last ten years, aimed at designing innovative materials developed from by-products and extraction of bioactive molecules for different purposes. The perspective chosen to discuss the topic is related to the sustainability of these processes, in terms of both the environment and economy. The circular economy supports a zero-waste approach, which should not also be meant as a zero-cost process in terms of the level of technology that has been partially developed. [ABSTRACT FROM AUTHOR]

Türkiye has dominated world hazelnut production for a long time and one of the most important hazelnut growing areas in the Black Sea region is Düzce province. Agriculture plays an important role in Düzce economy and hazelnut orchards occupy 45% of total agricultural areas. Mincane hazelnut cultivar widely grown in Akçakoca and shows variability particularly for nut characteristics. Thus, this study was aimed to select promising clones with superior features from the population of the Mincane hazelnut cultivar. In the selection study, some important nut characteristics were examined. According to a modified weighted ranking method results, 7 Mincane hazelnut clones were selected as promising. In the selected clones, nut weights varied between 1.85 g (81AKC21)-2.12 g (81AKC11), kernel weight 0.90 g (81AKC15)-1.08 g (81AKC05), kernel ratio 46.66% (81AKC11) -56.09% (81AKC21), shell thickness 1.10 mm (81AKC05)-1.17 mm (81AKC17 and 81AKC15), nut size 15.72 mm (81AKC15)-17.21 mm (81AKC10), kernel size 11.23 mm (81AKC15)-12.43 mm (81AKC10) and kernel shape index 1.08 (81AKC19)-1.22 (81AKC21), respectively. In the selected clones, the number of fruits per cluster was found to be between 1.85 (81AKC21)-4.85 (81AKC17) and clones 81AKC11 and 81AKC15 gave 100% intact kernel. [ABSTRACT FROM AUTHOR]

This study defines the genetic characterization of 16 hazelnut varieties and 64 genotypes. SSR method was used in molecular characterization studies. 18 SSR primers were used. In the SSR method, 118 bands were obtained, and 115 were polymorphic. The similarity coefficient in overall genotypes were between 0.12 and 0.98 in SSR and the polymorphism rate of the primer pairs used was calculated as 98.0%. The lowest polymorphism information content value (0.542) was obtained from the CAC-C 028 locus, and the highest polymorphism information content value (0.987) was obtained from the CAC- B 113 locus. The average polymorphism information content value was 0.786. The total discrimination power values of SSR loci were determined as 17.98; the lowest (0.748) discrimination power value was obtained from the CAC- B 020 locus, while the highest (1.404) discrimination power value was obtained from the CAC- A 024 b locus. The genotypes'clustering positions across the dendograms were essentially correlated with their geographic origins. This result shows that genetic origin plays an important role in terms of classification of genotypes in hazelnut. [ABSTRACT FROM AUTHOR]

The detection of raw material defects, e.g., due to incorrect or excessively long storage, is an important issue in incoming goods inspections in the food industry. Fast and easy-to-use analytical methods for evaluating the usability of raw materials are particularly important. In this study, the applicability of Fourier transform near-infrared (FT-NIR) spectroscopy and spatially offset Raman spectroscopy (SORS) for the detection of raw material defects was evaluated. For this purpose, six hazelnut batches stored at different temperatures, humidity levels, and storage times were used as examples in this pilot study. Classification models of samples before and after the different physical treatments show that the resulting changes can be detected by FT-NIR spectroscopy and SORS at elevated temperature and humidity. When one of the storage parameters is increased, FT-NIR spectroscopy is also useful for detecting differences between sample groups. In contrast, SORS cannot distinguish between pre- and post-stored samples when only one of the storage parameters is increased, making SORS unsuitable for incoming inspection of nuts. FT-NIR spectroscopy analysis is also a fast application, because freeze-drying of the sample material prior to analysis is not required as the results before and after freeze-drying are comparable. Combining the FT-NIR spectroscopy and SORS data in a low-level data fusion improved the classification models for samples stored at low storage temperatures, suggesting that the two methods provide complementary information. In summary, analyzing nuts with FT-NIR spectroscopy and SORS, as shown for hazelnuts, has the potential to identify abnormal samples during incoming goods inspections. [ABSTRACT FROM AUTHOR]

Copyright of Food Science & Engineering Research is the property of Ataturk University Coordinatorship of Scientific Journals 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 recent years, the use of techniques based on electromagnetic radiation as an investigative tool in the agri-food industry has grown considerably, and between them, the application of imaging and THz spectroscopy has gained significance in the field of food quality control. This study presents the development of an experimental setup operating in transmission mode within the frequency range of 18 to 40 GHz, which was specifically designed for assessing various quality parameters of hazelnuts. The THz measurements were conducted to distinguish between healthy and rotten hazelnut samples. Two different data analysis techniques were employed and compared: a traditional approach based on data matrix manipulation and curve fitting for parameter extrapolation, and the utilization of a Self-Organizing Map (SOM), for which we use a neural network commonly known as the Kohonen neural network, which is recognized for its efficacy in analyzing THz measurement data. The classification of hazelnuts based on their quality was performed using these techniques. The results obtained from the comparative analysis of coding efforts, analysis times, and outcomes shed light on the potential applications of each method. The findings demonstrate that THz spectroscopy is an effective technique for quality assessment in hazelnuts, and this research serves to clarify the suitability of each analysis technique. [ABSTRACT FROM AUTHOR]