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The European Commission has established legislation for toxic metals in certain foodstuffs in order to protect public health already in 1993. After several amendments, new maximum levels for cadmium and lead in certain foods were set as per 30 and 31 August 2021 for lead and cadmium, respectively. The new Serbian Regulation on "maximum levels of certain contaminants in food" is fully harmonised with this European legislation. The concentrations of cadmium (Cd), lead (Pb), mercury (Hg), and arsenic (As) were determined in 832 samples of 39 species of fruits and processed fruits, collected during the period January 2015 to December 2017. Fruits and fruit products originated from 45 countries, including Serbia. Samples were analysed by inductively coupled plasma - optical emission spectrometry (ICP-OES). Concentrations of cadmium, lead, mercury, and arsenic in fruits and fruit products were compared to these maximum levels (MLs). Overall, measurable Cd, Pb, Hg, and As were found in 377 samples (45.3%). According to the former regulations, the maximum levels of Cd and Pb for analysed fruits and fruit products were exceeded in only 10 samples (1.20%; n = 832): Cd in 6 and Pb in 4 samples, but according to the latest regulations, the maximum levels of Cd and Pb for fruits were exceeded in 196 of the samples (23.9%; n = 820): Cd in 191 and Pb in 5 samples. The increase of ML exceedances shows that attention needs to be paid for compliance of food to the recent MLs for these metals.

The scientific journal articles (n = 150) were examined to obtain instrumental egg color data published in the period 2009–2020. The majority of articles originated from Asia (42.0%), investigated yolk color (45.3%), selected Minolta device (65.3%). The greatest part of papers failed to include parameters such as port size (92.0%), observer (90.0%), illuminant (84.0%), technical replicates (70.0%) and calibration method (66.7%), and, therefore, this represents a key matter in conducting comparative research to ensure equivalence in order to trace and compare different research data. Furthermore, the usage of a computer vision system (CVS) for egg color analysis was investigated. The color of five egg species (chicken, goose, duck, quail and turkey) was estimated using a CVS and a traditional colorimeter. The CVS-produced color was highly similar to the actual color of egg sample (ranging from 75.0 to 100.0%). The color of eggshell gathered through the Minolta depicts brighter, less “red” and more “yellow” appearance than CVS. Regarding the color of yolk samples, Minolta had lighter (except the goose's yolk), more “green” and less “yellow” color, whereas CVS indicated the appearance of albumen as lighter (except quail's), more “red” and less “yellow” than colorimeter. Those results read by Minolta showed a non-real color of egg samples, whereas CVS-obtained color was highly similar to the actual egg color sample. Considering these results, it could be concluded that the CVS is a superior alternative for replacing traditional devices by providing better accuracy.

Petrovac sausage (Petrovská klobása) is a high-quality fermented dry sausage produced traditionally in the municipality of Ba?ki Petrovac (Vojvodina, Serbia). The product is characterised by specific and recognised texture, aroma and colour, produced without additives or preservatives. Lactic acid bacteria (LAB) microbiota plays an important role in production of the sausage. The aim of the paper is to monitor the changes in LAB during the production of Petrovac sausage. Samples of sausages were prepared without and with the addition of starter culture Staphylococcus xylosus as well as combined starter culture Lactiplantibacillus plantarum and S. xylosus, and produced at two different temperature ranges. A total number of 495 strains were isolated from 33 samples of Petrovac sausage during 120 days of production process. Characterisation of the isolates was performed by phenotypic tests, while molecular identification of the representative strains was done by 16S ribosomal DNA sequencing. The total number of LAB was about 8 log (Colony Forming Unit (CFU))/g in all samples, while the number of staphylococci was about 4 log CFU/g. Molecular identification confirmed that all isolates belonged to the following species: Levilactobacillus brevis, Leuconostoc mesenteroides, Lactiplantibacillus plantarum and Pediococcus pentosaceus. Lactobacilli and Leuconostoc spp. dominate the total LAB strains, while P. pentosaceus was isolated at the lowest frequency.

The aim of this study was to investigate the possibility of computer vision system (CVS) application in fat content estimation for different types of fermented sausages. Four different types of local fermented sausages with different fat contents were studied: Njeguska, Kulen, Pirotska and tea sausage. Results obtained for CVS-estimated fat content were compared to the results of traditional chemical analysis. Relative errors of fat content estimation in Njeguska, Kulen, Pirotska and tea sausage were 1.47%, 0.46%, 20.84% and 11.19%, respectively. Results of t-test showed a significant (p

Petrovska klobasa is traditional dry fermented sausage with intense red color, what differentiate it from other products of the same type. Very important factor in traditional sausage production is...

Three Serbian traditional dry-fermented sausages, Sremski kulen (S), Lemeški kulen (L) and Petrovačka kobasica (P), were compared for physicochemical, biochemical and microbiological properties, in order to provide complex overview of their quality and safety. The sausages were produced and analyzed within two production seasons in traditional practice. Water activity, color, texture and proximate composition varied significantly (P

The aim of this study was to investigate textural characteristics of three traditional dry fermented sausages (Sremski kulen, Lemeški kulen and Petrovská klobása) manufactured in different small-scale facilities in northern Serbia, and to correlate them with physicochemical and sensory characteristics. The sample sausages were supplied by different local traditional producers. The textural characteristics were correlated with physicochemical and sensory characteristics using multiple linear regression analysis and principal component analysis. Differences in physicochemical characteristics reflected even more notable differences in texture characteristics. Regarding regression equations, obtained results showed that moisture content was significant for hardness, springiness and cohesiveness. Hardness was also influenced by fat content, while chewiness was influenced by protein content. Principal component analysis separated samples of Petrovská klobása, as the group with the most reproducible analysed characteristics. Obtained results of statistical analyses should provide knowledge for possible improvements of the traditional production, in a way that these sausages could be produced in different facilities with consistent textural characteristics. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR31032 and Grant no. III44006]

The antioxidant properties of Boletus edulis, Cantharellus cibarius and Craterellus cornicupioides decoctions and the effect of mushroom addition on the total phenolic content and the degree of secondary oxidative changes on lipids in frankfurters was studied. Moderate antioxidant activity was obtained by DPPH assay when mushroom decoctions were tested in vitro. Using the conjugated diene method, moderate antioxidant activity was achieved with Boletus edulis and Craterellus cornicupioides decoction, while with Cantharellus cibarius decoction, antioxidant activity was low. Constant amounts of phenolic acid were obtained in frankfurters fortified with Boletus edulis, while lipid oxidation on each tested day was several times less than in the control group of frankfurters, throughout two months of refrigerated storage. Generally, these mushrooms could be used as natural antioxidants to interfere with the chemical deterioration of food products and specifically, to extend the shelf life of cooked pork sausages.

The medicinal herbs of the Balkan Peninsula are highly represented in traditional medicine. The connection between traditional and modern life and health is reflected in the creation of new food products with added value. In this study, the plant species Sambucus nigra L. was used to obtain freshly pressed juice, whose chemical composition and various biological activities were evaluated. The most abundant compounds were phenolic acids: protocatechuic and chlorogenic acid, as well as flavonoids: quercetin-3-O-hexoside, quercetin, and rutin. The analyzed juice was very rich in total phenolic compounds (1945 mg GAE per mL juice), and a significant anthocyanin concentration was observed (30.85 mg Cy-3-GE per mL juice). Bioactivity testing revealed that elderberry juice was an extremely potent agent in the process of neutralizing NO free radicals (53.06 g TE per L juice), while in reducing over-enzyme activity, the best result was achieved in the inhibition of tyrosinase enzyme (54.70 mg KAE per g of juice).

Meat is one of the most nutritious foods that humans can consume, and is defined as the flesh (skeletal muscles) of animals used as food. In addition to protein and fat, meat is a significant source of several micronutrients (minerals and vitamins). Edible offal is also a form of meat which is used as food, but which is not skeletal muscles, and in general possesses higher contents of some micronutrients, especially minerals and vitamins, than muscular tissue. Minerals are the inorganic elements other than carbon, hydrogen, oxygen and nitrogen, which remain behind in the ash when food is incinerated. They are usually divided into two groups – macrominerals (main elements) and microminerals (trace elements) or into three groups – main elements (macrominerals), trace elements (microminerals) and ultra-trace elements. The aim of this paper is to provide an overview of the existing literature on the content of nine most abundant minerals (potassium, phosphorous, sodium, magnesium, calcium, zinc, iron, copper and manganese) in the major raw pork meat cuts (tenderloin, ham, loin and shoulder) and edible offal (tongue, heart, lungs, liver, spleen, kidney, brain and spinal cord) from indigenous pigs. The mineral levels in raw pork meat and pig edible offal are variable, ranging from 175.7 to 463.8 mg/100g for potassium; 159 to 502.0 mg/100g for phosphorous; 38.11 to 158.4 mg/100g for sodium; 8.3 to 28.5 mg/100g for magnesium; 4.61 to 26.02 mg/100g for calcium; 0.67 to 6.47 mg/100g for zinc; 0.55 to 45.59 mg/100g for iron; 0.10 to 0.825 mg/100g for copper; and from 0.0038 to 0.338 mg/100g for manganese. Keywords: minerals, pork, edible offal, indigenous pigs

Early post-mortem, objective and non-destructive prediction of tissue distribution in the major pork cuts is a challenge for the meat industry. Mathematical models to predict pig carcass composition using total lean meat percentage and carcass weight were evaluated in this study. The data were obtained from 455 cold pig carcasses which were dissected according to the EU reference method; total lean meat percentage and carcass weight ranged from 42.45 to 69.21% and from 23.26 to 55.22 kg, respectively. Developed empirical models gave a reasonable fit to the experimental data and successfully predicted the carcass composition and tissue distribution in primal cuts. The second order polynomial models showed high coefficients of determination for prediction of experimental results (between 0.612 and 0.929), while the artificial neural network (ANN) model, based on the Broyden-Fletcher-Goldfarb-Shanno iterative algorithm, showed better prediction capabilities (overall r(2) was 0.889). The newly developed software, based on ANN model is easy, fast, cheap and with sufficient precision for application in the meat industry.

The aim of this study was to determine the extent of changes in physico-chemical and sensory properties of dry fermented sausages where pork backfat was partly replaced by flaxseed oil used as liquid (FXL), after encapsulation (DM), and pie-emulsified with alginate (FXA) and soy protein isolate (FXI). During production and storage, similar pH values of all products were observed. FXL sausages had significantly lower (p (lt) 0.05) weight loss which led to significantly higher moisture content, significantly lower fat content, hardness and chewiness. Also, FXL sausages had the lowest grades in terms of sensory attributes, such as colour. odour. taste, texture and overall acceptability. Flaxseed oil preparations affected the parameters of instrumental colour analysis of sausages. All modified products had significantly higher yellowness (relative to control) and FXI sausages relative to other modified products. Regarding consumer sensory evaluation, FXA sausages stood out among modified products because all other modified products had significantly lower grades relative to control. The thirty-day storage period did not lead to significant changes (p>0.05) in any of the observed sensory characteristics.

This study investigates the effects of sodium nitrite replacement by the sage essential oil (SEO), on the physico-chemical, microbiological and sensory quality of dry fermented sausages (DFS) during 225 days of storage. The SEO (0.00, 0.05 and 0.10 µL/g) was added in DFS batters formulated with different levels of pork back fat (15% and 25%) and sodium nitrite (0, 75 and 150 mg/kg). The inclusion of SEO had no negative impact on pH, color (instrumental and sensory) and texture parameters. Total plate counts were lower than 6 log CFU (colony forming units)/g in all samples throughout the storage. Furthermore, the addition of SEO at concentration of 0.05 µL/g provided acceptable TBARS (2-Thiobarbituric acid reactive substances) values (&lt, 0.3 mg MDA (malondialdehyde)/kg) in the samples produced with reduced levels of sodium nitrite (0 and 75 mg/kg) without negative alternations on sensory attributes of odor and flavor. Generally, our findings confirmed that the usage of SEO could be a good solution to produce healthier DFS with reduced levels of sodium nitrite.

The medicinal herbs of the Balkan Peninsula are highly represented in traditional medicine. The connection between traditional and modern life and health is reflected in the creation of new food products with added value. In this study, the plant species

The effect of Juniperus communis L. essential oil (JEO) addition at concentrations of 0.01, 0.05 and 0.10 &micro, L/g on pH, instrumental parameters of color, lipid oxidation (2-Thiobarbituric acid reactive substances (TBARS)), microbial growth, texture and sensory attributes of dry fermented sausages produced with different levels of fat (15 and 25%) and sodium nitrite (0, 75 and 150 mg/kg) was assessed. Reduced level of sodium nitrite (75 mg/kg) in combination with all three concentrations of JEO (0.01&ndash, 0.10 &micro, L/g) resulted in satisfying physico-chemical (color and texture) properties and improved oxidative stability (TBARS &lt, 0.3 mg MDA/kg) of dry fermented sausages produced with 25% of fat. However, sausages produced with 0.10 &micro, L/g of JEO had untypical flavor. No foodborne pathogens (Escherichia coli, Listeria monocytogenes, Salmonella spp. and sulfite-reducing clostridia) were detected in any sample throughout the storage period (225 days). The results of this study revealed significant antioxidative activity of JEO and consequently its high potential as effective partial replacement for sodium nitrite in dry fermented sausages.

The antioxidant and antimicrobial properties of Boletus edulis decoction and the effect of mushroom addition on the physicochemical and microbiological properties of frankfurters during refrigerated storage were studied. The addition of mushroom delayed the increase in the total number of aerobic mesophilic microorganisms during the storage. The incorporation of B. edulis in cooked sausages resulted in the significantly higher hardness of frankfurters in comparison with control, during chilled storage. Mushroom addition significantly affected the color of sausages throughout storage, but no deficiencies in sensory acceptance test were obtained. Generally, this mushroom can be used as a natural antioxidant to interfere with microorganism growth and extend the shelf life of cooked pork sausages during refrigerated storage. Practical applications In this study, the addition of B. edulis has proven to be a potent antioxidant and antimicrobial ingredient that extends the shelf life of frankfurters. That could be an interesting finding in potentially reducing or replacing commercial antioxidants with a natural, healthier variant of food additives.

Freezing rate significantly affects the quality of frozen meat and its biochemical changes. The loss of water from the cellular structure, which, under normal conditions, acts as a mechanical barrier between protein chains, causes spontaneous interactions of proteins that result in their denaturation. In order to determine the content of myofibrillar and sarcoplasmic proteins in meat samples, the samples were frozen at rates of 0.40, 0.90, and 1.25 cm/h for a storage period of 15 days. Protein content was analyzed by capillary gel electrophoresis and high-pressure liquid chromatography. During the freezing process, the protein chains were found to be shortened so that myofibrillar proteins were between 20 and 50 kDa, whereas sarcoplasmic proteins were between 20 and 100 kDa at all the freezing rates mentioned. The results of the analysis also show that the total number of sarcoplasmic proteins (freezing rate 0.90 cm/h; 20 proteins) was lower than the total number of myofibrillar proteins (freezing rate 0.90 cm/h; 35 proteins), and the molecular weight for both types of protens was lower 50 kDa. Further research should be directed towards extending storage time. Keywords: meat, myofibrillar proteins, sarcoplasmic proteins, freezing rate.

The effects of wild thyme by-products (Thymus serpyllum L.) from supercritical fluid extraction SFE1 (100 bar and 40 °C) and SFE2 (350 bar and 50 °C) on the quality of ground pork patties evaluated by pH, CIE-color, lipid (TBARS test) and protein oxidation (thiol group content) and microbiological profile. SFE extracts were added to ground pork patties as: 0.075 μL/g of SFE1 (T1), 0.150 μL/g of SFE1 (T2), 0.075 μL/g of SFE2 (T3), 0.150 μL/g of SFE2 (T4), while SFEs (T5) was control without any extracts. SFE1 and SFE2 were protective against color degradation. Moreover, the addition of SFE1 and SFE2 significantly reduced lipid and protein oxidation in the patties (p ≤ 0.05). Furthermore, lower concentration of SFE2 reduced total plate count to

Research Areas: Food Science & Technology This research aimed to investigate and compare traditional products called “duvan chvarci” produced using pork meat and fat, originated from local households and industries. Physical and chemical analysis demonstrated differences among the examined products, mostly in total chloride content and TBARS values. Samples collected at local households showed finer color (higher lightness and yellowness) and sensory properties (rated as “extremely acceptable”), while industrial products were rated between “very acceptable” and “extremely acceptable“. Microbiological analysis exhibited that enterobacteria, coagulase-positive staphylococci, Salmonella spp., Shigella spp., and fungi were absent from all meat products. Dominant microbiota was identified as Lactobacillus spp. and Staphylococcus spp. All tested isolates showed γ-haemolysis on blood agar plates. Tested Staphylococcus spp. were sensitive to novobiocin while Lactobacillus isolates demonstrated sensitivity to ampicillin, chloramphenicol, clindamycin, erythromycin, tetracycline, gentamycin, and streptomycin. None of the tested isolates showed full resistance to antibiotics. Overall, results indicated that duvan chvarci is a microbiologically safe product and provided the initial evidence regarding the physical, chemical, technological, and sensory properties of this widely consumed product in the Balkans. info:eu-repo/semantics/publishedVersion

The effect of sage essential oil (SEO) and sage extract (SE) obtained from sage (Salvia officinalis L.) herbal dust (food industry by-product) on microbiological and oxidative stability of fresh pork sausages was investigated. pH, microbiological analysis, TBARS value and sensory panel scores were assessed. Oxygenated monoterpenes, oxygenated sesquiterpenes and diterpene polyphenols were the most abundant compounds present in SEO and SE samples. SEO and SE addition resulted in significant (p

The aim of this study was to determine colour characteristics (lightness - L* , redness - a* and yellowness - b* ) of dry fermented sausage Petrovska klobasa smoked in traditional (T - direct smoking) and industrial (I - indirect smoking) conditions, at the end of drying period and the end of storage period. Also, the content of polycyclic aromatic hydrocarbons -PAH (acenaphthylene, fluorene, phenanthrene, anthracene, pyrene, benz[a] anthracene chrysene, benzo[ b ]fluoranthene, benzo[k]flouranthene, benzo[a] pyrene, indeno[1,2,3- cd ]pyrene, dibenz[a,h]anthracene and benzo[ghi] perylene) from Environmental Protection Agency list (US-EPA) were determined in both examined groups of sausages. According to the results obtained in this study, Petrovska klobasa smoked in traditional conditions had significantly lower (P a* ) at end of drying period, but colour characteristics ( L*; a*; b* ) were not significantly different (P > 0.05) at the end of storage period comparing to sausages smoked in industrial conditions. Also, Petrovska klobasa smoked in traditional conditions at both examined periods had significantly higher total content of 13 US-EPA PAH (118.7 μg/kg; 168.0 μg/kg respectively) comparing to sausages smoked in industrial conditions (30.5 μg/kg; 61.3 μg/kg respectively).

In this paper, the application of a biopolymer coating based on chitosan was tested. The optimized coating was formed as a two-layer coating, wherein the first layer (which is in contact with the product) was formed of chitosan with emulsified caraway essential oil as an active component, whereas the second layer was formed of chitosan with the addition of beeswax to optimize the moisture barrier of the coating. As a substrate, the traditional dry fermented sausage Petrovská klobása was selected. The coating was applied to the sausage after drying. During two months of storage under controlled conditions, the influence of the coating on the loss of moisture, the oxidative stability and the sensory characteristic of aroma of the control sausage (without the coating) and sausage with the coating was monitored. The results obtained indicate a significant contribution of the applied dual layer chitosan-based coating to the preservation of the sausage quality parameters analyzed.

The aims of this study were to obtain percentages of meat and fat cover for SEUROP classification system reference images using a computer vision system (CVS) and to calculate classification intervals which could be used in the future for construction of cheap and easy to use classification devices for small slaughterhouses. Lowest percentages of fat cover were found for the first class marked as “low” (the lowest fat content) and they gradually increased to the last class marked as “very high” (the highest fat content). Based on the obtained results, decision making intervals were proposed. In the present study, classification only refers to classification of adult bovine animals based on fat cover.

Concentrations of mercury (Hg) were analysed in livers (n = 26) and kidneys (n = 26) of female cattle (412–2502 days old) from farms for milk production in the area of Vojvodina. Concentration of Hg was analysed by ICP-OES, after digestion by microwave. The Hg concentrations in the livers and kidneys ranged from below detection limits (LOD < 0.006 mg/kg) to 0.206 mg/kg wet weight and from below detection limits (LOD < 0.006 mg/kg) to 0.018 mg/kg wet weight, respectively.

A computer vision system (CVS) and a colorimeter were compared for their abilities to measure the colour of twenty-seven different milks and milk products. The frequency of similarity test showed that CVS-generated colour chips were similar to the actual sample colour in all trials (100%). The CVS-obtained colours were found to be more similar to the colour of sample visualised on the monitor, compared with colorimeter-generated colour chips, with values of 83.3–100.0% depending on the milk product. The third test showed that there was difference between colour measured by CVS and the colorimeter; colorimeter readings resulted in a darker and yellower colour based on average L∗a∗b∗ values, while CVS readings resulted in lighter and less yellow appearance. Compared with a colorimeter, measuring colour by CVS was, therefore, found to be reliable and should be considered as a superior tool for replacing traditional devices by offering improved representativeness and accuracy.

The aim of this paper was to examine the effect of chitosan coating with the addition of caraway essential oil and beeswax on lipid oxidation protection, as well as aroma and water content preservation of traditional dry fermented Petrovska klobasa sausage. During the entire storage period, TBARS index value in coated sausage was lower compared to the control (P

The introduction of agro-food industry by-products rich in bioactive compounds represents major challenge in food industry sector. The influence of wheat germ particle size (

The aim of this study was to investigate the influence of the anatomical location of muscles on their physical characteristics and proximate and mineral composition. Physical (pH value, water-holding capacity − WHC, and instrumental colour − CIE L*a*b* values) characteristics and proximate (moisture, protein, total fat and total ash) and mineral (K, P, Na, Mg, Ca, Zn, Fe, Cu, Ni and Mn) composition were determined in four ( M. psoas major − PM, M. longissimus dorsi − LD, M. semimembranosus − SM, and M. triceps brachii − TB) muscles of Saanen goat male kids. Many significant or numerical differences were found in the mean values of quality characteristics among the particular muscle types. Muscles had no significant influence ( P > 0.05) on Mg, Ca, Ni and Mn content. The PM muscles were the highest in pH 24 h (5.83), CIE a* (22.47, reddest muscle), CIE b* (5.90) values, moisture (77.61 g/100 g), Na (78.2 mg/100 g), Fe (1.57 mg/100 g), Cu (0.131 mg/100 g) and Mn (0.013 mg/100 g) content and had the highest WHC, darkest colour (CIE L* = 38.03), and lowest content of total fat (1.40 g/100 g), K (330 mg/100 g) and Ni (0,019 mg/100 g). The LD muscles were the highest in K (392 mg/100 g), Mg (26.1 mg/100 g), Ca (11.8 mg/100 g) and Ni (0.030 mg/100 g) content, and the lowest in CIE a* (14.71) and CIE b* (3.84) values, total ash (1.15 g/100 g), Zn (2.24 mg/100 g), Cu (0.092 mg/100 g) and Mn (0.011 mg/100 g) content. The highest content of protein (20.69 g/100 g), total ash (1.20 g/100 g) and P (255 mg/100 g), and the lowest pH 24 h (5.68) value, WHC and moisture (76.42 g/100 g), Na (64.2 mg/100 g), Fe (1.07 mg/100 g) and Mn (0.011 mg/100 g) content were found in SM muscles. The lightest colour (CIE L* = 44.02), the highest content of total fat (2.15 g/100 g), Zn (3.21 mg/100 g) and Mn (0.013 mg/100 g), and the lowest content of protein (19.29 g/100 g), total ash (1.15 g/100 g), P (223 mg/100 g), Mg (24.3 mg/100 g) and Ca (10.6 mg/100 g) were found in TB muscles. Significant relationships between quality characteristics of meat in number of cases were determined. This study was undertaken to increase the available information on the physicochemical traits of goat meat. This is important to provide, update and improve regularly nutrient composition data of goat meat.

This study assessed the effects of farm management during rearing practices in the first months of a calf&rsquo, s life on growth performance and meat quality traits during the fattening period. A total of 48 Simmental calves were divided into two groups at a commercial cattle feedlot. In the first group were calves from the same farm and herd (n = 12 male and n = 12 female). The second group included calves from several different herds and farms (n = 12 male and n= 12 female). Calves were transferred to a feedlot and fed with a commercial feedlot ration at three to four months of age. The aim was to determine if identical fattening conditions at feedlot can reduce initial calf rearing differences between cattle during the fattening period. Bulls grew faster than heifers reaching higher total gain and showed significantly higher slaughter weight than heifers. Meat samples of heifers from the same herd had the highest intramuscular fat content and reddest color with significant differences among cattle groups. The most abundant fatty acid was oleic acid (C18:1), followed by palmitic (C16:0), stearic (C18:0), linoleic (C18:2), and myristic acid (C14:0). Meat samples of heifers from different herds were darkest with highest content of iron (Fe) with significant differences among cattle groups.

Purpose The purpose of this paper is to investigate the ability of the computer vision system (CVS) to evaluate the colour of poultry meat. The advantages of the CVS over traditional methods were also explored. Design/methodology/approach The research was carried out on m. pectoralis major samples of three animals for each of the following four species: chicken, turkey, duck and goose. The total colour difference (ΔE) and the degree of difference of hue, chroma and lightness between the methods were calculated. In addition, a trained panel of 14 people was used to carry out three different similarity tests analysed using χ2 one sample test and one-way ANOVA. The correlation coefficient between CVS and colourimeter measures was evaluated using the Spearman rank correlation test. Findings The total colour difference (ΔE) between the methods employed was so large that the generated colour(s) could be considered more opposite than similar. The CVS-generated colour chips were more similar to the sample of the meat products visualised on the monitor compared to colourimeter-generated colour chips in all (100 per cent) individual trials performed. The use of the colourimeter for colour evaluation of lighter coloured poultry meat (chicken and turkey) was unrepresentative. Practical implications In this study, a CVS was developed to measure the colour of poultry meat as an alternative to conventional colourimeters. Originality/value The research has demonstrated that the use of a CVS should be considered a superior alternative to the traditional method for measuring colour of chicken, turkey, duck and goose meat.

Goats, the earliest ruminant to be domesticated, are traditional sources of meat, milk, fibre, leather, related products of animal origin and as draught and pack animals. Meat is the major product of the goat. Meat quality is the sum of all sensory, nutritive, technological and hygienic-toxicological factors of meat. The aims of this study were to investigate the chromium content of four different muscles (M. psoas major, M. longissimus dorsi, M. semimembranosus and M. triceps brachii) of Saanen goat male kids and to determine whether the chromium contents differed between the muscles. Chromium content was determined using inductively coupled plasma optical emission spectrometry (ICP-OES), after dry ashing mineralisation. The studied muscles did not significantly differ (P >0.05) with respect to chromium content. The chromium content ranged from 0.012 to 0.067 mg/100 g, with an average of 0.026 mg/100 g.

The aim of this study was to use a flavoromics approach to identify key compounds responsible for sensory flavor of lamb and sheep meat. The investigation was confined to volatile compounds from adipose tissue and metabolites in lean meat using headspace-gas chromatography/mass spectrometry (HS-GC/MS) and solvent extraction-GC/MS, respectively. Partial least square regression analysis supported with variable selection were used to correlate identified compounds to sensory attributes. Several metabolites involved in energy production via Krebs cycle and Embden-Meyerhof-Parnas pathway contributed to gamy and grass flavor. Gamy flavor was strongly and positively correlated with aspartic acid, cyclo-leucine, gluconic, citric and pyruvic acid. Gluconic and pyruvic acid together with formic acid, β-caryophyllene, 3-methylphenol, 2-ethylfuran showed strong positive correlation with grass flavor. Sugars (glucose, mannose-6-phosphate and myo-inositol) were negatively correlated with gamy and grass flavor, suggesting a role in suppression of off-flavors in lamb and sheep meat. Bitter flavor was strongly correlated with hypotaurine and (E)-2-pentenal. Metallic flavor and bitterness were influenced by almost the same compounds. Acidic flavor was not explained by any compound identified, while rancidity was not detected by panelists. Finally, the flavor components describing grass and bitter flavor could be used to discriminate animals from different production systems. 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).T

This is the peer-reviewed version of the conference article: Tomasević, I.; Tomović, V.; Milovanović, B.; Lorenzo, J.; Đorđević, V.; Karabasil, N.; Đekić, I. Comparison of a Computer Vision System vs. Traditional Colorimeter for Color Evaluation of Meat Products with Various Physical Properties. Meat Science 2019, 148, 5–12. [https://doi.org/10.1016/j.meatsci.2018.09.015]

The effect of coriander essential oil (CEO) at concentrations of 0.075–0.150 μL/g on pH, color, lipid oxidation (TBARS), residual nitrite concentration and microbial growth of cooked pork sausages produced with different levels of sodium nitrite (0, 50 and 100 mg/kg) was investigated. Artificial neural networks modeling and the multi-response optimization were used to determine the optimal combinations of process parameters and storage time. Reduced concentration of sodium nitrite (60 mg/kg) in combination with 0.12 μL/g of CEO resulted in satisfying redness ( a* approx. 11.1) and improved oxidative (TBARS approx. 0.12 mg MDA/kg) and microbial stability (total plate count – TPC approx. 2.50 Log CFU/g) of cooked pork sausages during refrigerated storage. Therefore, the results of this paper revealed significant antioxidative and antimicrobial activity of CEO, and consequently its high potential of utilization in processing of cooked pork sausages with enhanced quality and shelf-life.

The effect of winter savory (Satureja montana L.) essential oil (SEO) and supercritical extracts (SE1; SE2) at concentrations of 0.075 and 0.150 µL/g on pH, lipid oxidation (TBARS), microbial growth and sensory quality of fresh pork sausages during storage were investigated. SEO, SE1 and SE2 improved oxidative and microbial stability of fresh pork sausages. The addition of SEO and SE1 at concentration of 0.150 µL/g affected the reduction of total Enterobacteriaeceae count to under 3 log cfu/g. Sausages produced with SE1 and SE2 had a higher scores for odor, flavor and overall acceptance compared to sausages treated with SEO and control sample. Therefore, the results of this paper revealed significant antioxidative and antimicrobial activity of SE1 and SE2, and consequently its high potential of utilization in processing of fresh pork sausages.