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Current nutritional guidelines in terms of the effect on gut microbiota and human health considering the WHO and FAO recommendations 考虑到世卫组织和粮农组织的建议,目前的营养指南对肠道微生物群和人类健康的影响
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2023-02-01 DOI: 10.17221/186/2022-cjfs
Barbora Růžičková, Pavel Kohout
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引用次数: 0
The quality of the fat in flaxseeds and chia seeds is not affected by their heat treatment 亚麻籽和奇亚籽中的脂肪质量不受热处理的影响
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2023-01-24 DOI: 10.17221/159/2022-cjfs
M. Brestenský, S. Nitrayová, P. Patráš
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引用次数: 0
Antimicrobial properties of phenolic acid alkyl esters 酚酸烷基酯的抗菌性能
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-12-21 DOI: 10.17221/135/2022-cjfs
Eva Feldeková, M. Kosová, M. Berčíková, Miroslav Dragoun, I. Klojdová, I. Hrádková, J. Šmidrkal
The series of phenolic acid (2-, 3-, 4-monohydroxy- and 2,4-, 2,5-dihydroxy) alkyl esters (methyl, ethyl, propyl, and butyl) were prepared, and their antimicrobial activities were determined. The antimicrobial activity against the tested microorganisms Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans and Aspergillus brasiliensis was investigated and expressed by minimum inhibitory concentration (MIC) in the range of 1.2–20 mM. The inhibitory activity of higher esters of phenolic acids was found to be higher than that of methyl esters and acids. The minimum inhibitory concentration (MIC) of tested compounds was compared with that of 4-hydroxybenzoic acid and its esters (parabens).
制备了一系列酚酸(2-,3-,4-单羟基和2,4-,2,5-二羟基)烷基酯(甲基,乙基,丙基和丁基),并测定了它们的抗菌活性。对测试微生物大肠杆菌、铜绿假单胞菌、金黄色葡萄球菌、,对白色念珠菌和巴西曲霉进行了研究,并用1.2–20mM的最小抑制浓度(MIC)表达。发现酚酸的高级酯的抑制活性高于甲酯和酸。将测试化合物的最小抑制浓度(MIC)与4-羟基苯甲酸及其酯(对羟基苯甲酸酯)的最小抑制剂量进行比较。
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引用次数: 0
Functional profile of carob (Ceratonia siliqua L.) beans and pod pulp originated from the Republic of Moldova 原产于摩尔多瓦共和国的角豆(Ceratonia siliqua L.)豆和豆浆的功能概况
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-12-21 DOI: 10.17221/139/2022-cjfs
T. Capcanari, A. Chirsanova, O. Radu, Eugenia Covaliov, Violina Popovici, R. Siminiuc
This study provides the first insight into the biologically active potential (total phenolic compounds, flavonoids, tannins and antioxidant activity) of Moldavian сarob beans and pod pulp in comparison with carob grown in Algeria, Spain, and Italy. The results showed that the samples of Moldavian carob contain significant amounts (P ≤ 0.05) of biologically active compounds, the content of some of these compounds is far exceeding that of сarob from the above-mentioned regions. Thus, the total content of phenolic compounds in Moldavian carob samples is 1.4 times higher, of flavonoids 1.9 times higher compared to the imported ones. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) antioxidant activity of Moldavian carob samples proved to be about 10–12% higher than the antioxidant activity of samples from other regions. It has been proved that Moldavian carob pod pulp and beans have a high biologically active potential making them possible ingredients for functional food products.
与阿尔及利亚、西班牙和意大利种植的角豆相比,这项研究首次深入了解了摩尔多瓦角豆和荚果肉的生物活性潜力(总酚类化合物、黄酮类化合物、单宁和抗氧化活性)。结果表明,摩尔多瓦角蛋白样品中含有大量(P≤0.05)的生物活性化合物,其中一些化合物的含量远远超过上述地区的角蛋白。因此,摩尔多瓦角豆样品中酚类化合物的总含量是进口样品的1.4倍,黄酮类化合物的含量是进口的1.9倍。摩尔多瓦角豆样品的2,2-二苯基-1-苦基肼(DPPH)和2,2'-叠氮基双(3-乙基苯并噻唑啉-6-磺酸)(ABTS)抗氧化活性被证明比其他地区样品的抗氧化活性高约10-12%。已经证明,摩尔多瓦角豆果肉和豆类具有很高的生物活性潜力,使其成为功能性食品的可能成分。
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引用次数: 1
Rapid non-destructive identification of selenium-enriched millet based on hyperspectral imaging technology 基于高光谱成像技术的富硒小米无损快速鉴定
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-12-19 DOI: 10.17221/129/2022-cjfs
Fu Zhang, Xiahua Cui, Chao Zhang, Weihua Cao, Xin-Yu Wang, Sanling Fu, S. Teng
To meet rapid and non-destructive identification of selenium-enriched agricultural products selenium-enriched millet and ordinary millet were taken as objects. Image regions of interest (ROI) were selected to extract the spectral average value based on hyperspectral imaging technology. Reducing noise by the Savitzky-Golay (SG) smoothing algorithm, variables were used as inputs that were screened by successive projections algorithm (SPA), competitive adaptive reweighted sampling (CARS), uninformative variable elimination (UVE), CARS-SPA, UVE-SPA, and UVE-CARS, while sample variables were used as outputs to build support vector machine (SVM) models. The results showed that the accuracy of CARS-SPA-SVM was 100% in the training set and 99.58% in the test set equivalent to that of CARS-SVM and UVE-CARS-SVM, which was higher than that of SPA-SVM, UVE-SPA-SVM, and UVE-SVM. Therefore, the method of CARS-SPA had superiority, and CARS-SPA-SVM was suitable to identify selenium-enriched millet. Finally, 454.57 nm, 484.98 nm, 885.34 nm, and 937.1 nm, which were obtained by wavelength extraction algorithms, were considered as the sensitive wavelengths of selenium information. This study provided a reference for the identification of selenium-enriched agricultural products.
为满足富硒农产品的快速无损鉴定,以富硒小米和普通小米为对象。基于高光谱成像技术,选择感兴趣图像区域提取光谱平均值。通过Savitzky Golay(SG)平滑算法降低噪声,使用变量作为输入,通过连续投影算法(SPA)、竞争自适应重加权采样(CARS)、无信息变量消除(UVE)、CARS-SPA、UVE-SPA和UVE-CARS进行筛选,同时使用样本变量作为输出来构建支持向量机(SVM)模型。结果表明,CARS-SPA-SVM在训练集中的准确率为100%,在测试集中的准确度为99.58%,与CARS-SVM和UVE-CARS-SVM相当,高于SPA-SVM、UVE-SPA-SVM和UVE-SVM。因此,CARS-SPA方法具有优越性,CARS-SPA-SVM适合于富硒小米的鉴定。最后,通过波长提取算法获得的454.57nm、484.98nm、885.34nm和937.1nm被认为是硒信息的敏感波长。本研究为富硒农产品的鉴定提供了参考。
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引用次数: 0
Yogurt fortified with GABA-producing strain and Ganoderma lucidum industrial waste 用产gaba菌株和灵芝工业废料强化酸奶
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-12-19 DOI: 10.17221/164/2022-cjfs
M. Jovanović, P. Vojvodić, M. Petrović, D. Radić, D. Mitić-Ćulafić, M. Kostić, Sonja P Veljović
This study aimed to produce yogurt with Ganoderma lucidum residues and selected probiotic bacteria. To select the most potent GABA-producing strain (GABA – γ-aminobutyric acid), nine probiotic bacteria were subjected to the glutamate decarboxylase (GAD) activity assay. Limosilactobacillus reuteri DSM 17938 was selected and used in preparing fresh yogurts, with and without supplementation of Ganoderma residues obtained after water extraction [GW (Ganoderma waste) 2% (w/v)]. A decrease in pH during fermentation and the occurrence of syneresis were investigated. Lactic acid bacteria (LAB) viability and anti-Escherichia activity were estimated. Further, the cytotoxic effect of yogurt extracts on the human colon cancer cell line (HCT116) was surveyed. Besides functionality, the sensory attributes were evaluated. The pH values did not significantly change with the GW addition while increasing the LAB counts [up to 9.76 ± 0.11 log colony-forming units (CFU) mL–1] and the cytotoxic effect on HCT116 cells. Yogurt produced with selected bacteria and GW had the most valuable anti-coli effect against E. coli 0157: H7 and E. coli ATCC 35218 (American Type Culture Collection, Rockville, Maryland) (4.81 ± 0.62 and 5.64 ± 0.29 CFU mL–1, respectively). Although the added GW increased the yogurt functionality, it had a slightly negative effect on the taste and texture of the partially modified recipe. Yogurts fortified with GABA-producing strain and GW could potentially reduce relapse rates of depressive disorders.
本研究旨在利用灵芝残渣和选定的益生菌生产酸奶。为了选择最有效的GABA产生菌株(GABA-γ-氨基丁酸),对9种益生菌进行谷氨酸脱羧酶(GAD)活性测定。选择路氏利莫西乳酸杆菌DSM 17938并用于制备新鲜酸奶,添加和不添加水提取后获得的灵芝残留物[GW(灵芝废物)2%(w/v)]。研究了发酵过程中pH值的降低和脱水的发生。对乳酸菌(LAB)活力和抗大肠杆菌活性进行了评估。此外,研究了酸奶提取物对人结肠癌癌症细胞系(HCT116)的细胞毒性作用。除了功能外,还对感官属性进行了评估。在增加LAB计数[高达9.76±0.11对数集落形成单位(CFU)mL–1]和对HCT116细胞的细胞毒性作用的同时,pH值没有随着GW的添加而显著变化。用选定的细菌和GW生产的酸奶对大肠杆菌0157:H7和大肠杆菌ATCC 35218(美国典型培养物保藏中心,马里兰州罗克维尔)具有最有价值的抗大肠杆菌作用(分别为4.81±0.62和5.64±0.29 CFU mL–1)。尽管添加的GW增加了酸奶的功能,但它对部分修改后的配方的味道和质地有轻微的负面影响。富含GABA产生菌株和GW的酸奶可能降低抑郁障碍的复发率。
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引用次数: 3
Evaluation of chemical composition and cooking properties of Turkish type gluten-free rice couscous 土耳其型无筋蒸粗麦粉的化学成分和蒸煮性能评价
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-12-06 DOI: 10.17221/223/2021-cjfs
E. Aydin
In this study, the aim was to produce traditional couscous in gluten-free form. For this purpose, rice flour (RF) and pre-treated (gelatinized) rice flour (GRF) were added in varying proportions (15, 20, 25, and 30%) to the recipe instead of gums and enzymes in order to provide the desired structure. The control sample without GRF was also produced. With the addition of GRF, the total dietary fibre (TDF) content in the couscous samples increased, and reversely the carbohydrate and energy values decreased. The GRF reduced the level of total soluble organic material (TSOM) as well as the cooking loss of the couscous samples, which resulted in lower deformability. According to the results, the gluten-free rice couscous was successfully produced with GRF, especially at a 30% ratio. Good cooking properties were observed in these couscous samples. In this context, in the addition of 30% GRF, higher water absorption and swelling volume with lower cooking loss were observed compared with the control sample. In addition, the couscous samples had higher ash, dietary fibre and fat content as well as a lower phytic acid ratio (P < 0.05). It was determined that there was significant correlation between the cooking time of the samples with the cooking loss and total soluble organic material. According to the results, the PCA showed that there were clear correlations between cooking trials (water absorption and swelling volume) and chemical composition (moisture, ash, crude fat, and TDF).
在这项研究中,目的是生产无麸质形式的传统蒸粗麦粉。为此,在配方中以不同比例(15%、20%、25%和30%)添加米粉(RF)和预处理(糊化)米粉(GRF),而不是添加胶和酶,以提供所需的结构。同时制备了不含GRF的对照样品。随着GRF的添加,粗麦粉样品中总膳食纤维(TDF)含量升高,碳水化合物和能量值相反降低。GRF降低了蒸粗麦粉样品的总可溶性有机物质(TSOM)水平和蒸煮损失,导致其变形性降低。结果表明,用GRF制备无麸质大米蒸粗麦粉是成功的,特别是在30%的比例下。在这些蒸粗麦粉样品中观察到良好的烹饪性能。在这种情况下,与对照样品相比,添加30% GRF的样品吸水率和溶胀体积更高,蒸煮损失更小。粗麦粉样品灰分、膳食纤维和脂肪含量较高,植酸比较低(P < 0.05)。测定了样品的蒸煮时间与蒸煮损失和总可溶性有机物有显著的相关性。结果表明,主成分分析表明,蒸煮试验(吸水率和溶胀量)与化学成分(水分、灰分、粗脂肪和TDF)之间存在明显的相关性。
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引用次数: 0
Effects of washing procedures in reducing Listeria monocytogenes on raw leafy vegetables 洗涤程序对生叶菜减少单核细胞增生李斯特菌的影响
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-11-24 DOI: 10.17221/98/2022-cjfs
N. Giang, M. Nor-Khaizura, N. Mahyudin, Thi Lam An Vu
The efficacy of potable water and antimicrobial agents, including turmeric extract, black pepper extract, sodium chloride and sodium bicarbonate, in reducing Listeria monocytogenes on the leaf mustard (Brassica integrifolia) and iceberg lettuce (Lactuca sativa L.) was compared. The uncontaminated samples of two raw leafy vegetables were inoculated with L. monocytogenes at a concentration of 5 log and 7 log colony-forming units (CFU) g–1 for 1 h. At the high L. monocytogenes contamination level, the treatment with black pepper extract 0.6 mg mL–1 for 5 min was found to produce the most considerable decrease in L. monocytogenes counts, resulting in 1.44 log and 1.68 log reduction on leaf mustard and iceberg lettuce, respectively. Similarly, the black pepper extract also showed the highest L. monocytogenes reduction, approximately 0.79 log CFU g–1 on two leafy vegetables at the low contamination level. However, the odour of black pepper extract was left on the vegetables after being washed.
比较了饮用水和姜黄提取物、黑胡椒提取物、氯化钠和碳酸氢钠等抗菌剂对芥菜(Brassica integrifolia)和卷心莴苣(lacuca sativa L.)叶片上单核细胞增生李斯特菌的抑制作用。将未受污染的两种生叶蔬菜样品分别接种浓度为5 log和7 log菌落形成单位(CFU) g-1的单核增生乳杆菌接种1 h。在单核增生乳杆菌高污染水平下,黑胡椒提取物0.6 mg mL-1处理5 min,单核增生乳杆菌数量的减少最为显著,芥菜和卷心莴苣的单核增生乳杆菌数量分别减少1.44 log和1.68 log。同样,在低污染水平下,黑胡椒提取物对两种叶菜的单增李斯特菌的抑制作用也最高,约为0.79 log CFU g-1。然而,黑胡椒提取物的气味在清洗后留在蔬菜上。
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引用次数: 0
Effect of low expression level of acetyl coenzyme A synthetase gene on secondary metabolite in Monascus   乙酰辅酶A合成酶基因低表达对红曲次生代谢产物的影响
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-11-24 DOI: 10.17221/4/2022-cjfs
Lin Lin, Chundan Zhang, Xinman Shao, Pu-Huan Liu, Zhangfei Wu, Yanxia Lu, Hongzhen Guo
Acetyl-coenzyme A (CoA) is a key metabolite produced by the acetyl-CoA synthetase (ACS) gene in energy metabolism and biosynthetic pathways. ACS is speculated to be the branching site of monacolin K (MK) and citrinin production and related to the metabolite production of Monascus. In this study, the ACS expression was inhibited by ribonucleic acid interference (RNAi). T7 was selected for a follow-up analysis of the lowest ACS expression, which was 0.401 times higher than that of the wild-type strain. The effects on the colony morphology of Monascus were determined. The morphological characteristics of mycelia and spores were observed under a scanning electron microscope. The contents of secondary metabolites, namely, MK and citrinin, were determined through high performance liquid chromatography (HPLC). Colour values were measured with a spectrophotometer. Results showed that the low ACS expression could inhibit the growth of Monascus colonies and the hypha and affect the formation and morphology of Monascus M1 spores. It could also inhibit the production of the main secondary metabolites, namely, MK, citrinin, and pigment.
乙酰辅酶A(CoA)是乙酰辅酶A合成酶(ACS)基因在能量代谢和生物合成途径中产生的关键代谢产物。ACS被认为是monacolin K(MK)和桔霉素产生的分支位点,并与红曲霉的代谢产物产生有关。在本研究中,ACS的表达受到核糖核酸干扰(RNAi)的抑制。选择T7进行最低ACS表达的后续分析,其是野生型菌株的0.401倍。测定了对红曲霉菌落形态的影响。用扫描电镜观察了菌丝和孢子的形态特征。采用高效液相色谱法测定了次生代谢产物MK和桔霉素的含量。用分光光度计测量颜色值。结果表明,ACS的低表达可抑制红曲霉菌落和菌丝的生长,并影响红曲霉M1孢子的形成和形态。它还可以抑制主要次生代谢产物MK、桔霉素和色素的产生。
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引用次数: 0
Can biogenic amines cause ailments following the intake of edible mushroom meals? 食用蘑菇后,生物胺会引起疾病吗?
IF 1.3 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Pub Date : 2022-11-13 DOI: 10.17221/96/2021-cjfs
E. Dadáková, T. Pelikánová, P. Wolfová, P. Kalač
Several toxicological centres have reported ailments, mainly digestive inconveniences, following the intake of provably edible mushroom species. The causes of such complaints have not been explained yet. We, therefore, tested levels of biogenic amines (BAs). Fruit bodies of widely consumed wild-growing species, Imleria badia and Suillus variegatus were stewed, then preserved by freezing or canning and stored for up to 12 months. Contents of six amines were determined in the fresh matter, in each step of preservation and during storage. Histamine (HIM) and cadaverine (CAD) were not detected at all. Putrescine (PUT) occurred in fresh fruit bodies at levels of 700–1 500 mg kg–1 dry matter (DM), however, its contents considerably decreased, particularly during stewing. Undesirable phenylethylamine (PEA) and tyramine (TYM) occurred at lower levels. Stewing, the technological step necessary in both the tested preservation treatments, reduced the contents of all the amines alike as sterilisation, whereas following storage showed a limited effect. PUT seems to be the only amine that could participate in the reported ailments.
几个毒理学中心报告了一些疾病,主要是消化不便,在摄入可食用的蘑菇物种后。这些投诉的原因尚未得到解释。因此,我们测试了生物胺(BAs)的水平。将广泛食用的野生植物Imleria badia和Suillus variegatus的果体炖熟,然后通过冷冻或罐装保存,最长可保存12个月。在新鲜物质中,在保存的每个步骤中以及在储存过程中测定了六种胺的含量。组胺(HIM)和尸胺(CAD)均未检出。腐胺(PUT)在700 ~ 500 mg kg-1干物质(DM)水平下在新鲜果体中发生,但其含量明显下降,特别是在炖过程中。不良的苯乙胺(PEA)和酪胺(TYM)水平较低。在两种被测试的保存处理中,炖是必要的技术步骤,与灭菌一样减少了所有胺的含量,而随后的储存显示出有限的效果。PUT似乎是唯一一种可以参与报告疾病的胺。
{"title":"Can biogenic amines cause ailments following the intake of edible mushroom meals?","authors":"E. Dadáková, T. Pelikánová, P. Wolfová, P. Kalač","doi":"10.17221/96/2021-cjfs","DOIUrl":"https://doi.org/10.17221/96/2021-cjfs","url":null,"abstract":"Several toxicological centres have reported ailments, mainly digestive inconveniences, following the intake of provably edible mushroom species. The causes of such complaints have not been explained yet. We, therefore, tested levels of biogenic amines (BAs). Fruit bodies of widely consumed wild-growing species, Imleria badia and Suillus variegatus were stewed, then preserved by freezing or canning and stored for up to 12 months. Contents of six amines were determined in the fresh matter, in each step of preservation and during storage. Histamine (HIM) and cadaverine (CAD) were not detected at all. Putrescine (PUT) occurred in fresh fruit bodies at levels of 700–1 500 mg kg–1 dry matter (DM), however, its contents considerably decreased, particularly during stewing. Undesirable phenylethylamine (PEA) and tyramine (TYM) occurred at lower levels. Stewing, the technological step necessary in both the tested preservation treatments, reduced the contents of all the amines alike as sterilisation, whereas following storage showed a limited effect. PUT seems to be the only amine that could participate in the reported ailments.","PeriodicalId":10882,"journal":{"name":"Czech Journal of Food Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45606724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Czech Journal of Food Sciences
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