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Common bean (Phaseolus vulgaris L.) seed germination improves the essential amino acid profile, flavonoid content and expansion indexShort CommunicationLuis Díaz-Batalla, Karina Aguilar-Arteaga, Javier Castro-Rosas, Reyna Nallely Falfán-Cortés, Ricardo Omar Navarro-Cortez, Carlos Alberto Gómez-AldapaCzech J. Food Sci., 2023, 41(1):73-77 | DOI: 10.17221/5/2022-CJFS Common bean (Phaseolus vulgaris L.) is one of the most important grain legume foods for the human diet. Common bean seed is gaining attention due to its content of secondary metabolites with positive effects on human health. The present work analysed the effect of common bean germination on the essential amino acid profile, active compound content, and expansion index after extrusion processing. The content of tryptophan (Trp) in raw common bean (RCB) and in germinated common bean (GCB) seeds was 6.1 and 7.9 mg·g–1 of protein, respectively. The limiting amino acids in RCB were sulphur amino acids and Trp, and in GCB only the sulphur amino acids were the limiting amino acids. The germination process in beans increases the levels of quercetin and kaempferol and allows the synthesis of daidzein and genistein, and significantly increases the expansion index after extrusion processing. The germination of common bean could be used as a strategy to improve nutritional, nutraceutical, and processing properties. |
Improving the nutritional quality of cereals and legumes by germinationOriginal PaperAyºe Seda ªenlik, Derya Alkan*Czech J. Food Sci., 2023, 41(5):348-357 | DOI: 10.17221/44/2023-CJFS Cereal and legume grains are germinated to improve their nutritional and sensory qualities. This study investigated the effect of germination on the physicochemical properties of some grains and legumes grown in Türkiye. At the end of the germination for 48 h and 96 h at 24 ± 1 °C, carbohydrate, protein, lipid, dietary fibre, dry matter, ash, total phenolic content, antioxidant capacity and colour analyses of the germinated grains were determined. The results indicated that the germination process increased the phenolic content of all samples. The legume seeds' 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity significantly increased with germination. The germination process significantly decreased the total carbohydrate contents of the samples. A statistically significant decrease was found for the protein content of barley and corn, especially by 48 h of germination. The lipid content of cereal grains decreased as germination progressed. It might be recommended to improve the functional properties of cereals and legumes by germination and their use in the food industry. |
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Technological approaches applied in the design of gluten-free bakery productsReviewRodica Siminiuc*, Dinu ȚurcanuCzech J. Food Sci., 2023, 41(3):155-172 | DOI: 10.17221/180/2022-CJFS
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Quality characteristics and antioxidant activity of goat milk yoghurt fortified with Lycium ruthenicum Murr. fruitOriginal PaperKongyang Wu, Jiafei Huang, Panpan Bu, Hang Gao, Tongxiang Yang, Mingyan Shi, Jianming Han, Yilin FanCzech J. Food Sci., 2023, 41(5):382-392 | DOI: 10.17221/77/2023-CJFS
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Nutritional composition analysis and quality evaluation of cattle in different regions of Guizhou Province (China)Original PaperHaoXiang Xu, WenJu Luo, Lu Lei, JiuLing Long, Bo Yu, YuanFeng Zhao, Rong Ai, Jiang Lingling, Jiang Ran, JingRui Zhou (email: 296655827@qq.coCzech J. Food Sci., 2023, 41(6):455-472 | DOI: 10.17221/133/2023-CJFS This study aimed to investigate the variations in nutritional composition among different breeds of cattle in Guizhou. Specifically, this study selected Guanling, Weining, Sinan, Wuchuan, and Simmental cattle as experimental subjects. Assessing the nutritional quality of the longissimus dorsi muscle involves evaluating various parameters, including ultimate pH (pHu), meat colour, water-holding capacity, shear force, protein and fat content, levels of organic acids and amino acid composition. The study's findings indicated notable variations among the muscles of different cattle breeds tested. Guanling, Wuchuan, and Simmental cattle exhibited the highest water-holding capacity, while Wuchuan cattle displayed the highest shear forces. Guanling cattle and Simmental cattle had the highest levels of protein and fat. Weining cattle and Simmental cattle demonstrated the highest concentrations of lactic acid and oxalic acid. Guanling cattle exhibited the highest total amino acid and essential amino acid content. Moreover, Guanling cattle and Weining cattle showed the highest lightness (L*) and yellowness (b*) values, indicating lighter meat colour, while Weining cattle had the highest redness (a*) value, indicating redder meat colour. No significant differences among the five cattle breeds were observed in pHu and propionic acid content. These results provide a theoretical basis and serve as a data reference for assessing the suitability of different beef varieties for various processing purposes. |
Effect of ultrasound on isolation and properties of oat starchOriginal PaperEsra Baºarıcı Ünlü, Çiğdem Aykaç*Czech J. Food Sci., 2023, 41(2):111-117 | DOI: 10.17221/94/2022-CJFS The aim of the present study was to analyse the effect of ultrasound (US) on the isolation and properties of oat starch. Starch isolation was done by a water extraction method and with sonication for 30 (US30), 45 (US45) and 60 (US60) min. The highest starch yield was found in US45 as 49.04 g·100 g–1 of oat flour when the extraction time decreased from 6 h to 45 min. The functional properties of starches, such as bulk density, water solubility index, dispersibility and water absorption capacity, ranged from 0.65 to 0.80 g·mL–1, 3.22 to 5.75%, 78 to 87.5% and 84.23 to 95.87%, respectively. US45 had lower bulk density and higher dispersibility than other starches. US treatments decreased the gelatinisation temperature ranges and increased the gelatinisation enthalpy values. The enthalpy of the gelatinisation value of oat starch was found as 8.45 J·g–1 and increased with sonication up to 13.65 J·g–1. Retrogradation endotherms were observed after 6 days of storage, and enthalpies of retrogradation were lower than in the gelatinised starches. Fourier transform infrared spectroscopy (FTIR) spectra showed that US treatment did not affect the functional groups of oat starch. US application during oat starch isolation gave desired results, such as time reduction, higher yields and increased functional properties. |
Tetragenococcus halophilus, Staphylococcus xylosus and Staphylococcus saprophyticus for sardine fermentationOriginal PaperZhijia Fang, Wenjuan Zhu, Ying Liu, Xinran Wang, Yaling Wang, Yanyan WuCzech J. Food Sci., 2023, 41(4):271-278 | DOI: 10.17221/246/2021-CJFS
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Comparison of physicochemical properties, phenolic profiles and antioxidant capacity of hawthorn berries stored at different temperatures and timeOriginal PaperXueyan Wei, Yanjing Yin, Kang Xu, Tao Wang, Chuanhe Zhu, Wen Liu, Mengmeng GuoCzech J. Food Sci., 2023, 41(6):419-427 | DOI: 10.17221/112/2023-CJFS This research investigated the effect of different storage temperatures on the compositional changes, physicochemical characteristics, and functional properties of hawthorn berries. Storage at 25 °C resulted in the gradual decrease of the moisture, hardness, sugar, titratable acid, and colour of hawthorn berries. These changes decreased with decreasing storage temperature, and the minimal changes happened at frozen storage (–18 °C). Similarly, the decreasing rate of ascorbic acid, extractable polyphenol (EPP), and flavonoids during storage also decreased with reducing storage temperature (25 °C > 4 °C > –18 °C). Hydrolysable polyphenol (HPP) was relatively stable during the hawthorn storage, and non-extractable proanthocyanidins (NEPA) increased with decreasing temperature. Ferric reducing antioxidant power (FRAP) of EPP and HPP decreased at 25 °C, while polyphenolic oxidase (PPO) and peroxidase (POD) activities decreased. Decreasing the storage temperature can improve the stability of the nutritional properties, antioxidant capacity, and enzyme activity of hawthorn. The specific storage temperature depends on the final processing conditions and the purposes of the hawthorn berries. |
Optimising consumer acceptability of Cauca specialty coffee through roasting profiles on acidity and body sensory attributesOriginal PaperDiego Andrés Campo-Ceballos, Carlos Alberto Gaviria-LópezCzech J. Food Sci., 2023, 41(1):64-72 | DOI: 10.17221/181/2022-CJFS The roasting coffee process is the compilation of time-temperature-dependent physical and chemical transformations induced by heat. Through the study of the time-temperature curve, the correct definition of the degree of roasting of coffee is an area of active and non-trivial research, which intervenes in obtaining consistent roasting profiles reflected in the acceptability of the drink perceived by consumers. This paper used the methodology of response surfaces (RSM) with the central composite design (CCD). A consumer study was conducted with 104 individuals, each tasting 13 cups of specialty coffee from Cauca-Colombia. Predictive equations for acidity and body perception were obtained. The roasting profile points in charge, turning point, yellow, brown, first crack, and drop step were included. Mathematical models predict the acidity and body perceptions by integrating the roasting profile points characteristics of coffee. The Cauca coffee beans produced using the optimied conditions contribute to obtaining a roasting time/temperature of 468 s at 192 °C, respectively, with acidity (9/15) and body (5.5/15) in the (0–15) intensity consumer's perception scale. |
Investigation of multimycotoxins by LC-MS/MS in maise semolina chipsOriginal PaperOktay Samadzade, Karlo Muratoğlu, Serkan Kemal BüyükünalCzech J. Food Sci., 2023, 41(3):212-220 | DOI: 10.17221/241/2022-CJFS
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Refined approach to the evaluation of heat resistance applied to Enterobacteriaceae in cheese stretchingOriginal PaperIrena Nìmeèková*, ©árka Tre¹lová, Eli¹ka Le¹kováCzech J. Food Sci., 2023, 41(5):358-366 | DOI: 10.17221/83/2023-CJFS
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Screening and quantification of pesticide residues in ciders by liquid chromatography-high resolution mass spectrometryOriginal PaperVeronika Zu¹»áková, Martin Du¹ek, Vladimíra Jandovská, Jana Ol¹ovskáCzech J. Food Sci., 2023, 41(1):29-35 | DOI: 10.17221/158/2022-CJFS The present study aimed to apply a multi-residue method for the screening and quantification of pesticide residues in ciders, low alcoholic beverages made by fermentation of apple juice. Twenty bottled craft cider samples purchased from the Czech market were analysed for pesticide residues. The residues of pesticides were extracted from samples using the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) procedure in combination with additional solid-phase extraction (SPE) sample clean-up to achieve the lowest detection limit possible. In this study, targeted screening of pesticide residues in the samples was performed with the Q-Orbitrap mass spectrometry instrument. We identified 18 pesticides in cider samples analysed by screening method using an accurate-mass database of about 500 pesticide compounds, including their retention times, empirical formulas, and characteristic fragments. Additionally, liquid chromatography with high-resolution tandem mass spectrometer (LC-HRMS/MS) was used for re-analysis of positive findings of pesticides in samples and allowed to quantify compounds of interest at 0.2 µg L–1 concentration level. The monitoring scheme was applied to the set of craft ciders, and the results revealed the presence of pesticide residues in most of the samples at trace levels ranging from 0.5 to 5 µg L–1 and rarely at a level higher than 10 µg L–1. |
The use of modern fermentation techniques in the production of traditional wheat breadOriginal PaperPavel Skøivan, Marcela Sluková, Ivan ©vec, Helena Èí¾ková, Iveta Horsáková, Eli¹ka RezkováCzech J. Food Sci., 2023, 41(3):173-181 | DOI: 10.17221/39/2023-CJFS A traditional Czech bakery white bread product is commonly made with directly mixed dough with the addition of yeast. In order to be able to reduce the salt content of the final product without compromising its acceptability to consumers, the dough was prepared with the addition of pre-ferments and wheat sourdoughs. The aim was to deepen the flavour background of the product and thus have a positive effect on its sensory properties. Wheat sourdoughs were prepared and tested using starter cultures and matured under different conditions. The resulting products were tested both sensorially and by means of precise physical methods. |
Endocrine disruptors in foods: Overlooked factors contributing to the prevalence of obesityReviewWenli Wu, Yang Yang, Bee KangTan, Shaoling Lin, Yaping Chen, Jiamiao HuCzech J. Food Sci., 2023, 41(6):393-405 | DOI: 10.17221/80/2023-CJFS
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Improving the extraction efficiency and functional properties of wheat germ protein by ultrasound-assistedOriginal PaperChunyan Xie, Juan Du, Chunmiao Xing, Xu Zhang, Lan Wang, Hongzhang Chen, Tong LinCzech J. Food Sci., 2023, 41(2):118-126 | DOI: 10.17221/54/2022-CJFS his study optimised the conditions for ultrasound-assisted extraction (UAE) of defatted wheat germ protein (WGP) and evaluated its effect on the functional properties. Single-factor and orthogonal experiment designs were combined to optimise the UAE extraction condition. The extraction of WGP reached the highest level, at 88.66%, with a solid : liquid ratio of 1 : 25 g·mL–1, pH value of 9.0, ultrasonic time of 10 min, and ultrasonic power at 400 W. Under these conditions, albumin, globulin, prolamin, and glutenin accounted for 32.26, 28.52, 5.42, and 22.40% of total protein, respectively. In addition, this study compared the functional properties of WGP extracted by UAE with the results based on a commercially available soy protein (SP) isolate (SPI). The UAE of WGP had better oil absorption, foaming, and emulsifying properties. Therefore, UAE is a promising technique for food protein extraction because it can change the protein efficiencies and properties of the extract. |
Chemical composition of dietary alfalfa and its effectiveness on broiler chicken thigh meat qualityOriginal PaperPetru Alexandru Vlaicu, Arabela Elena Untea, Raluca Paula Turcu, Mihaela Saracila, Iulia Varzaru, Alexandra Gabriela OanceaCzech J. Food Sci., 2023, 41(4):279-286 | DOI: 10.17221/79/2023-CJFS
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Utilisation of chicken eggshell nanopowder on physicochemical quality, microstructure, and amino acid profile of beef pattiesOriginal PaperHerly Evanuarini, Agus Susilo, Uun Yanuhar, Adelya Desi KurniawatiCzech J. Food Sci., 2023, 41(6):428-435 | DOI: 10.17221/156/2023-CJFS Chicken eggshells are a source of calcium and protein that can be added to restructured meat products, including patties. This study aimed to improve the chemical quality of beef patties with the addition of chicken eggshell nanopowder, including pH, protein content, ash content, fat content, antioxidant activity, calcium, microstructural quality, and identification of amino acid profiles. The method used in this study was a laboratory experiment arranged in a completely randomised design with five treatments: without the addition of chicken eggshell nanopowder as a control, the addition of chicken eggshell nanopowder 0.1, 0.3, 0.5, and 0.7% (w/w) with five replications. Data were analysed using the analysis of variance. It was followed by Duncan's multi-range test when the differences were significant or very significant. The research results show that the addition of chicken eggshell nanopowder to beef patties had a very significant effect (P < 0.01%) on pH, protein content, ash content, fat content, antioxidant activity, calcium, microstructural quality through scanning electron microscopy, and several amino acids. The addition of 0.7% chicken eggshell nanopowder could improve the chemical quality of the beef patties. The patty matrix was uniform and compact, and the air voids were getting tighter with the addition of chicken eggshell nanopowder, which was increasing based on scanning electron microscopy observations. Moreover, beef patties had various types of amino acids to achieve the best treatment. |
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Physical, mechanical, and antioxidant properties of alginate/pectin edible films with incorporated chokeberry and wild thyme extractsOriginal PaperSvetla Maksimova Dyankova*, Ayten Osman SolakCzech J. Food Sci., 2023, 41(5):367-374 | DOI: 10.17221/94/2023-CJFS
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Challenging the problematic detection of clostridial isolates causing late-blowing defect with MALDI–TOF MSOriginal PaperPelin Ertürkmen, Zübeyde ÖnerCzech J. Food Sci., 2023, 41(1):36-43 | DOI: 10.17221/199/2022-CJFS The present study aimed to evaluate the Clostridium spp. counts in corn silage, raw milk and Kaºar cheese and to identify the clostridial isolates causing a late-blowing defect (LBD) potential using matrix-assisted laser desorption-ionization-time of flight mass spectrometry (MALDI-TOF MS). Lactate-fermenting clostridial spores (LFCS) were determined by the most probable number method (MPN) in 14 samples of corn silage, 12 samples of raw milk and 20 samples of Kaºar cheese. 181 isolates were obtained from MPN gas-positive tubes. Gram staining, catalase and oxidase activity, anaerobic development tests and Scanning Electron Microscopy (SEM) imaging showed that 95 isolates were typical clostridial bacteria. Sixty-six isolates could maintain viability during the passage and stock stages. A confirmatory identification technique was then performed using MALDI-TOF MS. The results revealed that (49 out of 66 isolates) of bacteria were correctly identified as 38 (77.55%) Clostridium sporogenes, 6 (12.24%) Clostridium butyricum, 3 (6.12%) Clostridium beijerinckii, 1 (2.04%) Clostridium bifermentans and 1 (2.04%) Clostridium sartagoforme. This study determined that clostridial isolates that cause LBD can be identified successfully and quickly by MALDI-TOF MS, a novel method for detecting anaerobic bacteria. |
Effect of onion waste powder on the rheological characteristics, sensory attributes, and antioxidant properties of mayonnaiseOriginal PaperTsvetko Prokopov, Kremena Nikovska, Milena Nikolova, Pavel Merdzhanov, Mina Dzhivoderova-ZarchevaCzech J. Food Sci., 2023, 41(3):182-188 | DOI: 10.17221/19/2023-CJFS
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Ultra-high-pressure technology for preservation of fresh aquatic foods: A reviewReviewJiakun Peng, Chune Liu, Kaikai Bai, Shaohua Xing, Feng LiuCzech J. Food Sci., 2023, 41(5):313-322 | DOI: 10.17221/87/2023-CJFS
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Listeria monocytogenes clones circulating in the natural environment of the Czech Republic and SlovakiaOriginal PaperZuzana Tomá¹tíková, Lucie Hlucháòová, Tereza Gelbíèová, Renáta Karpí¹kováCzech J. Food Sci., 2023, 41(2):127-136 | DOI: 10.17221/234/2022-CJFS Listeria monocytogenes is not only a pathogen causing a serious food-borne disease in humans but can also occur as a saprophyte in the natural environment. This study aimed to evaluate the occurrence of L. monocytogenes obtained from the natural environment of the Czech Republic (hereinafter Czechia) and Slovakia in 2016–2018 and to compare the clonal relationship of strains circulating in the environment with the strains originating from the food chain and humans. Altogether, 217 samples of mud, surface water, vegetation and soil were collected in 61 locations. Samples were processed according to the modified EN ISO 11290-1 standard. The obtained L. monocytogenes isolates were characterised using serotyping, macrorestriction analysis, followed by pulsed-field gel electrophoresis, whole genome sequencing (WGS), and antimicrobial susceptibility testing. L. monocytogenes were detected in 8.8% of the examined samples and were isolated in 15 locations, mainly from the mud from the banks of the surface water sources. Altogether, 25 L. monocytogenes strains were obtained from 19 positive samples. Serotypes 1/2a, 4b, and 1/2b were detected among the strains. Twenty combined AscI/ApaI pulsotypes were obtained by macrorestriction analysis. Altogether, 12 sequence types (STs) were detected using Multi-locus sequence typing (MLST) by WGS, with ST451 being the most frequent. The core genome MLST analysis revealed a heterogeneous population of environmental strains. No phenotype resistance was detected by antimicrobial susceptibility testing. Screening of antimicrobial-resistance genes using the platform ResFinder revealed the genes fosX in 24 isolates and blaTEM-116 in one isolate. The occurrence of L. monocytogenes in various samples from natural environments within wide altitude range during different seasons of the year may highlight this bacterium's remarkable adaptability and exceptional tolerance to external factors. Serotype distribution of the strains circulating in the natural environment of Czechia and Slovakia seems to reflect distribution in the human population more than in the food chain. |
Development of a novel invA gene-based real-time PCR assay for the detection of Salmonella in foodOriginal PaperMarko Dmitric, Dejan Vidanovic, Kazimir Matovic, Bojana Tesovic, Milanko Sekler, Ivan Vicic, Nedjeljko KarabasilCzech J. Food Sci., 2023, 41(4):287-294 | DOI: 10.17221/114/2022-CJFS
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Nutritional habits comparison of the baby boomer, X, Y, and Z generations located at a private college in Muğla, TürkiyeOriginal PaperHalime Zülal Zeren, Elif Burcu Bali, Hülya DemirCzech J. Food Sci., 2023, 41(6):436-445 | DOI: 10.17221/105/2023-CJFS The present study aimed to reveal intergenerational differences in the nutritional habits of the baby boomer, X, Y, and Z generations at a private college in Muğla, Türkiye. The study population included the students of the TED Bodrum College in Muğla province in the 2021–2022 academic year, including 311 participants: baby boomers (74), X (66), Y (43), and Z (128) generations. An online questionnaire was used to compare the eating habits among the generations. The data were evaluated using SPSS software. Most of the generations believed in healthy eating. Physical image and social media mainly influence the healthy eating habits of the Z generation. The baby boomers and X generations mostly skipped lunch, while the Y and Z generations skipped breakfast. Baby boomers, X, and Y generations mostly prefer healthy foods; however, the Z generation attaches importance to tasty foods. Z generation's interest in nutrition mostly concerns their physical appearance, not their health. Nutritional knowledge must be strengthened, particularly among young generations, and nutrition education programs need to be better supported by the government and educational sectors. |
Coumarin derivatives as antifungal agents – A reviewReviewMirjana Lonèar, Dajana Ga¹o-Sokaè, Maja Molnar*Czech J. Food Sci., 2023, 41(2):79-91 | DOI: 10.17221/178/2021-CJFS Coumarins and pyridines are a promising class of naturally occurring bioactive heterocycles with unique physical and chemical properties. Compounds containing the coumarin framework possess a wide range of pharmacological, biological, and physiological activities, which makes them important for application in medicine, the food industry and agriculture. Among all coumarins' properties, it was found that coumarins may prevent fungal growth, depending on substituents linked to the coumarin core. Therefore, many coumarin derivatives have been investigated as potentially powerful agents in preventing and controlling fungal pathogens. This review summarises the latest research on coumarins and their antifungal activity to provide useful information for further developing more efficient coumarin-based fungicides. |
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The effect of different cooking methods on the antioxidant activity of wild Swiss chard (Beta vulgaris L. var. cicla)Original PaperYagmur Demirel Ozbek*, Ozlem SaralCzech J. Food Sci., 2023, 41(5):375-381 | DOI: 10.17221/114/2023-CJFS
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Biodiversity of Vitis vinifera endophytes in conventional and biodynamic vineyardOriginal PaperMaria Vrublevskaya, Thi Tra My Nguyenová, Lucie Drábová, Petra Lovecká, Blanka Vrchotová, Olga Ma»átková, Markéta Kuli¹ová, Irena Jaro¹ová KolouchováCzech J. Food Sci., 2023, 41(1):44-53 | DOI: 10.17221/200/2022-CJFS
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