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2025

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Articles 91 - 120 of 171

Full-Text Articles in Food Processing

Effects Of Exogenous Enzyme Treatment On Quality And Main Components Of Summer Green Tea, Shanmin Chen, Hongyu Luo, Yi Wang, Rui Chang, Linying Yuan, Juan Yang Aug 2025

Effects Of Exogenous Enzyme Treatment On Quality And Main Components Of Summer Green Tea, Shanmin Chen, Hongyu Luo, Yi Wang, Rui Chang, Linying Yuan, Juan Yang

Journal of Food Science and Biotechnology

[Objective ] This study aims to investigate the effect of exogenous enzyme treatment on the quality of summer green tea and optimize the enzyme treatment conditions.[Method ] Sensory evaluation was employed to evaluate and screen the tea samples treated with six exogenous enzymes.The effects of cellulase,tannase,and treatment conditions on the sensory quality,bitter/astringent taste attributes,and main biochemical components of summer green tea were studied by electronic tongue and chemometrics methods.The optimal treatment conditions of cellulase and tannase were comprehensively evaluated by hierarchical cluster analysis,correlation analysis,and principal component analysis (PCA ).[Result ] Sensory evaluation revealed that cellulase and tannase significantly improved the …

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Influence Of Water Hardness Used In Preparing Wheat Grain For Grinding On The Process Of "Stale" During Storage Of Bakery Products, Suvonqul S. Ravshanov, Ilkhom S. Nurmatov, Ulugbek N. Baltabaev Aug 2025

Influence Of Water Hardness Used In Preparing Wheat Grain For Grinding On The Process Of "Stale" During Storage Of Bakery Products, Suvonqul S. Ravshanov, Ilkhom S. Nurmatov, Ulugbek N. Baltabaev

CHEMISTRY AND CHEMICAL ENGINEERING

The hot climatic conditions of Uzbekistan are favorable for the development of mesophilic bacteria in bread products. The quality of the water used in this process has a great influence. The purpose of the study is to study the effect of water of different hardness on the change in the shelf life of bread during hydrothermal treatment for grinding wheat grain. To determine the freshness (staleness) of bread by rheological properties, the AP-4/2 automatic penetrometer and other devices for analyzing the properties of bread products were used. The conducted analyzes allowed us to conclude from the results of the study …

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The Importance Of Solvents In Obtaining Gossypol Free Cotton Meal In The Extraction Process, Dilshod A. Nasredinov, Aslbek B. Yulchiyev, Kamar P. Serkaev Aug 2025

The Importance Of Solvents In Obtaining Gossypol Free Cotton Meal In The Extraction Process, Dilshod A. Nasredinov, Aslbek B. Yulchiyev, Kamar P. Serkaev

CHEMISTRY AND CHEMICAL ENGINEERING

Comparative, analytical and experimental studies of methods for obtaining vegetable oils from oilseeds have been conducted, the purpose was to determine the advantages and disadvantages of technologies used in industry. As the experimental results have shown, among the existing methods of oil production, the method of direct extraction is promising, which provides 12% more water-soluble proteins while observing the technological regimes developed for each type of oil raw materials. Based on the fact that the current level of scientific and technological progress allows the use of targeted solvents and if necessary sequence of several extractants that provides isolation of a …

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Improvement Of Flax Seeds Processing Technology For The Production Of Functional Oil Products, Manzura N. Hafizova, Ismoil B. Isabaev, Nафиса R. Djurayeva, Suvankul S. Ravshanov Aug 2025

Improvement Of Flax Seeds Processing Technology For The Production Of Functional Oil Products, Manzura N. Hafizova, Ismoil B. Isabaev, Nафиса R. Djurayeva, Suvankul S. Ravshanov

CHEMISTRY AND CHEMICAL ENGINEERING

One of the main problems of our time is the sharp increase in alimentary-dependent diseases or so-called "diseases of civilization" caused by unbalanced nutrition, namely a stable deficiency or excess of nutrients with food relative to the physiological human needs. Therefore, recently there has been an increased interest in the production of functional products with a relatively balanced composition of certain nutrients depending on their purpose and intended use. A promising object of modification is traditional fat products, the transformation of which into functional ones is carried out by combining various types of raw materials, i.e., by creating composite (model) …

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Comparative Impacts Of Irradiation On Antioxidant Compounds Of Scalded And Non-Scalded Skin Of Granny Smith Apples, Angela Banda Aug 2025

Comparative Impacts Of Irradiation On Antioxidant Compounds Of Scalded And Non-Scalded Skin Of Granny Smith Apples, Angela Banda

Food Science (MS) Theses

Post-harvest Superficial scald affects the quality of Granny Smith Apples. Oxidative stress develops superficial scald with antioxidant systems mitigating the extent of this damage. This study evaluated the effects of gamma, X-ray, and electron beam irradiation on antioxidants – ascorbic acid, total phenolics, α-tocopherol, carotenoids, chlorophyll, and campesterol – in scalded and non-scalded apple peel tissue. Apples were treated with 0.2-0.77 kGy and stored at 0-1 °C. Irradiation at the applied doses increased scald incidence, suggesting that disruption of antioxidant systems promoted reactive oxygen species accumulation and membrane damage. While certain antioxidants appeared to be upregulated as a stress response, …

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Preparation Of Human Asprosin Nanobodies Based On A Natural Nanobody Phage Display Library, Yun Liang, Yi Huang, Qinghua He Jul 2025

Preparation Of Human Asprosin Nanobodies Based On A Natural Nanobody Phage Display Library, Yun Liang, Yi Huang, Qinghua He

Journal of Food Science and Biotechnology

[Objective ] Asprosin (ASP ),an adipokine produced from fibrillin- 1 (FBN 1) cleavage,is closely linked to type 2 diabetes mellitus and obesity when its level is abnormal,demonstrating significant effect on human health.Therefore,monitoring the ASP level is crucial.The author aims to screen the nanobodies specifically binding to ASP via phage display technology,offering a new antibody component for the research on ASP.[Method ] The antigenic epitopes of ASP were predicted by the online tools ABCpred and NovoPro,and then coupled with bovine serum albumin (BSA ) to form the coating antigen (ASP-Epitope-BSA ).After five rounds of bio-panning,the nanobodies specifically binding to ASP were …

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Modulatory Effects Of Flavonoids On Il- 4/Il-13 In Atopic Dermatitis And Their Structure-Activity Relationships, Yueyuan Wang, Jing Liu, Chen Li, Fengfeng Chen, Cheng Yang, Bingtian Zhao Jul 2025

Modulatory Effects Of Flavonoids On Il- 4/Il-13 In Atopic Dermatitis And Their Structure-Activity Relationships, Yueyuan Wang, Jing Liu, Chen Li, Fengfeng Chen, Cheng Yang, Bingtian Zhao

Journal of Food Science and Biotechnology

[Objective ] This study aims to explore the ameliorating effects of flavonoids on atopic dermatitis (AD) and their structure-activity relationships.[Method ] Flavonoids were selected through network pharmacology with interleukin- 4 (IL-4) and interleukin- 13 (IL-13) as key targets.The immunoglobulin E (IgE)-induced RBL- 2H3 cell model was employed to evaluate the effects of flavonoids on inflammatory factors,degranulation activities,and calcium ion influx,and the structure-activity relationships were analyzed.Finally,molecular docking was utilized to assist in exploring the action mechanism.[Result ] All of the six flavonoids (luteolin,apigenin,chrysin,quercetin,kaempferol,and fisetin ) screened by network pharmacology had significant inhibitory effects on the expression of IL- 4,IL- 13,tumor necrosis …

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Structural And Solution Property Characterization Of Oat Β-Glucans, Hongli Zhang, Yaning Shi, Ming Miao Jul 2025

Structural And Solution Property Characterization Of Oat Β-Glucans, Hongli Zhang, Yaning Shi, Ming Miao

Journal of Food Science and Biotechnology

[Objective ] This study aims to characterize the structure and investigate the solution properties of oat β-glucan (OBG ).[Method ] Two soluble OBGs with different weigh-average molecular weights (Mw),number-average molar weights (Mn),and peak molecular weights (Mp) were prepared by hot water extraction and ethanol classification.The structures and solution properties were characterized by Fourier-transform infrared spectroscopy (FT-IR ),nuclear magnetic resonance (NMR ),X-ray diffraction (XRD ),scanning electron microscopy (SEM ),high performance size exclusion chromatography coupled with multi-angle laser light scattering (HPSEC-MALLS ),and rheology.[Result ] OBG- 1 and OBG- 2 showed the Mw of 80.73×104 g/mol and 8.05×104 g/mol,the yields of (4.86±0.55)% and …

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Research And Preliminary Application Of A Rapid Immunoassay Method For Eugenol Based On Quantum Dots, Junjie Sun, Xiaoxia Liu, Ziyi Chen, Yinlai Li, Lu Zhai, Qinzhou Chen, Renyao Jin Jul 2025

Research And Preliminary Application Of A Rapid Immunoassay Method For Eugenol Based On Quantum Dots, Junjie Sun, Xiaoxia Liu, Ziyi Chen, Yinlai Li, Lu Zhai, Qinzhou Chen, Renyao Jin

Journal of Food Science and Biotechnology

[Objective ] This study aims to establish a rapid immunoassay method for the quantitative detection of eugenol.[Method ] The eugenol monoclonal antibody was conjugated to the surface of quantum dots by the 1-ethyl- 3- (3-dimethylaminopropyl ) carbodiimide (EDC ) and N-hydroxy-succinamide (NHS ) (EDC-NHS ) coupling method,with quantum dots as fluorescent markers.Bovine serum albumin (BSA ) was used for blocking,and fluorescence microscopy,agarose gel electrophoresis,and a microplate reader were used for identification.Furthermore,the established method was compared with high performance liquid chromatography (HPLC ).[Result ] The optimal synthesis conditions were as follows:quantum dot activation time of 30 min,conjugation pH with 8.0,antibody addition …

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Effects Of Tea Polysaccharides On The Properties Of Chestnut Starch, Lei Lei, Wenjun Fu, Lingling Yang, Haibo Liu, Daxi Sang, Qing Wang Jul 2025

Effects Of Tea Polysaccharides On The Properties Of Chestnut Starch, Lei Lei, Wenjun Fu, Lingling Yang, Haibo Liu, Daxi Sang, Qing Wang

Journal of Food Science and Biotechnology

[Objective ] This study aims to improve the properties of chestnut starch.[Method ] Tea polysaccharides were added to chestnut starch in different proportions,and the effects of tea polysaccharides on the water-holding capacity,digestive properties,textural properties,and other properties of chestnut starch were investigated.[Result ] The water-holding and oil-holding properties of chestnut starch were the largest when tea polysaccharides were added at 1% and then gradually decreased with the increase in the proportion of tea polysaccharides added.The transparency of chestnut starch gradually increased when tea polysaccharides were added from 1% to 8% and decreased significantly when tea polysaccharides were added at 16%.Adding tea …

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Research Progress In Thermo-Reversible Polysaccharide Gels, Dongxin Zhou, Ziao Zhang, Su Chen, Weimin Yang, Jiajun Sun, Shengzu Han, Anning Xie, Xiaoxiao Li, Yuxiang Bai Jul 2025

Research Progress In Thermo-Reversible Polysaccharide Gels, Dongxin Zhou, Ziao Zhang, Su Chen, Weimin Yang, Jiajun Sun, Shengzu Han, Anning Xie, Xiaoxiao Li, Yuxiang Bai

Journal of Food Science and Biotechnology

Thermo-reversible gels are widely applied in the processing of baking,meat,and snack products including cakes,candies,jelly,aspic,and steamed custard buns.Currently,the most effective thermo-reversible gel is gelatin,which can combine with water to form a transparent gel that melts when it is close to the temperature of the human oral cavity.However,gelatin is expensive.Therefore,researchers have turned their attention to polysaccharide gels,hoping to obtain more thermo-reversible food raw materials with different properties.The author reviews thermo-reversible polysaccharide gels from natural sources such as plants,algae,and microorganisms and those modified by physical,chemical,and enzymatic methods and summarizes the sources,structures,gelatinization mechanisms,and product applications of polysaccharide gels.It is expected to provide a reference …

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Mechanisms Of Antioxidant Activity Of Lactic Acid Bacteria And Its Application In Oxidative Stress-Related Diseases, Yixiao Shao, Chuang Huang, Chenjian Liu, Xiaoran Li Jul 2025

Mechanisms Of Antioxidant Activity Of Lactic Acid Bacteria And Its Application In Oxidative Stress-Related Diseases, Yixiao Shao, Chuang Huang, Chenjian Liu, Xiaoran Li

Journal of Food Science and Biotechnology

The antioxidant properties of lactic acid bacteria are related to various probiotic activities,which can prevent and alleviate a variety of chronic diseases caused by oxidation in the host.The antioxidant mechanisms of lactic acid bacteria,including the action mechanisms of antioxidant enzymes and non-enzymatic antioxidants and regulation of host signaling pathways,were expounded.Furthermore,the application status of antioxidant properties of lactic acid bacteria in diseases of the nervous system,digestive system,and skin system were summarized.The aim is to explore how to enhance the antioxidant activity of lactic acid bacteria in oxidative stress-related diseases and give new insights into the development of related treatment strategies.

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Reconstruction And Analysis Of Genome-Scale Metabolic Model Of Aspergillus Oryzae Fmme-S- 38, Cong Gao, Weijia Yuan, Chao Ye, Jia Liu, Liming Liu Jul 2025

Reconstruction And Analysis Of Genome-Scale Metabolic Model Of Aspergillus Oryzae Fmme-S- 38, Cong Gao, Weijia Yuan, Chao Ye, Jia Liu, Liming Liu

Journal of Food Science and Biotechnology

[Objective ] A genome-scale metabolic model (GSMM ) of the high L-malic acid-producing strain Aspergillus oryzae (A.oryzae ) FMME-S- 38 was constructed and analyzed.[Method ] The new GSMM iJW1333 was established for A.oryzae FMME-S- 38 through a two-step process of draft reconstruction and model refinement.[Result ] The model integrated 1 723 biochemical reactions,1 723 metabolites,and 1 333 functional genes,achieving the prediction accuracy of 94.6% for substrate metabolism and 92.0% for cell growth.Comparative genomic analysis revealed that mutations in the genes involved in the hexose monophosphate pathway (HMP ) and oxidative phosphorylation underpinned the enhanced L-malic acid production of A.oryzae FMME-S- …

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Effects Of Extraction Methods On The Composition And Immunological Activities Of Yeast Mannoproteins, Haibo Zhang, Yongjun Xia, Guangqiang Wang, Ning Peng, Zhixian Chen, Lianzhong Ai Jul 2025

Effects Of Extraction Methods On The Composition And Immunological Activities Of Yeast Mannoproteins, Haibo Zhang, Yongjun Xia, Guangqiang Wang, Ning Peng, Zhixian Chen, Lianzhong Ai

Journal of Food Science and Biotechnology

[Objective ] The extraction efficiency of different methods and the effects of these methods on the composition of mannoproteins extracted from yeast cell walls were compared.Furthermore,the anti-inflammatory activities of the extracted mannoprotein were evaluated.[Method ] Three yeast mannoproteins (MP-W,MP-B,and MP-E ) were extracted via high-temperature water,alkali,and enzyme-assisted extraction methods and purified via ethanol precipitation.The identification of monosaccharide composition and amino acid composition,distribution of relative molecular mass,and Fourier transform infrared spectroscopy were employed to analyze the composition and chemical structures of yeast mannoproteins.A cell experiment was carried out to examine the anti-inflammatory activity.[Result ] The yields of yeast mannoproteins extracted by …

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In Vitro Antioxidant And Anti-Inflammatory Activities Of Tea Flower Extract And Its Inhibitory Effect On Cell Aging, Shishuai Yu, Yining Hao, Bo Peng, Youyun Liu, Liping Qu Jul 2025

In Vitro Antioxidant And Anti-Inflammatory Activities Of Tea Flower Extract And Its Inhibitory Effect On Cell Aging, Shishuai Yu, Yining Hao, Bo Peng, Youyun Liu, Liping Qu

Journal of Food Science and Biotechnology

[Objective ] This study aims to investigate the in vitro antioxidant and anti-inflammatory activities of Yunnan tea flower extract (TFE ) and its Inhibitory effect on cell aging.[Method ] The main active components in TFE were determined by ultraviolet (UV)-visible spectrophotometry and high performance liquid chromatography (HPLC ).The antioxidant and anti-inflammatory activities of TFE were determined by the free radical scavenging assay and UV-induced photoaging model of human keratinocytes (HaCaT ),respectively.After the aging model of fibroblasts was established,the aging level of cells was assessed by the β-galactosidase (β-gal) staining assay,and the expression of matrix metalloproteinase- 1 (MMP- 1),matrix metalloproteinase- 3 …

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Synthesis Of N-Acetyl- Trans -4-Hydroxyproline Catalyzed By Acyltransferase, Chuanxiang Wei, Keru Chen, Yun Hu, Chao Sun, Rukang Xue, Fubao Sun, Jingfang Cheng Jul 2025

Synthesis Of N-Acetyl- Trans -4-Hydroxyproline Catalyzed By Acyltransferase, Chuanxiang Wei, Keru Chen, Yun Hu, Chao Sun, Rukang Xue, Fubao Sun, Jingfang Cheng

Journal of Food Science and Biotechnology

[Objective ] This study aims to establish the biosynthesis process of N-acetyl- trans -4-hydroxyproline (N-ATHOP ).[Method ] Escherichia coli (E.coli ) BL21 (DE3) was selected as the host to heterologously express the acyltransferase (MsAcT ) derived from Mycobacterium smegmatis.A semi-rational design was employed to construct the mutant MsAcT (S11C) capable of catalyzing the synthesis of N-ATHOP.[Result ] The catalytic reaction conditions of the mutant MsAcT (S11C) were optimized as pH 6.9,reaction temperature 49 ℃,initial trans -4-hydroxyproline (THOP ) concentration of 315.5 mmol/L,and vinyl acetate volume fraction of 10%.Under the optimized conditions,the yield of N-ATHOP synthesized under the catalysis of MsAcT …

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Zeaxanthin Encapsulated With High Internal Phase Emulsions And Its Stability, Ya Li, Ying Ou, Jie Lu, Shuo Meng, Shoushuai Feng, Hailin Yang Jul 2025

Zeaxanthin Encapsulated With High Internal Phase Emulsions And Its Stability, Ya Li, Ying Ou, Jie Lu, Shuo Meng, Shoushuai Feng, Hailin Yang

Journal of Food Science and Biotechnology

[Objective ] This study prepared highly stable high internal phase emulsions (HIPEs ) to encapsulate zeaxanthin,thereby improving the stability and expanding the food and pharmaceutical applications of zeaxanthin.[Method ] HIPEs were prepared with the gelatin-chitosan suspension for encapsulation of zeaxanthin extracted from goji berries.Ultra-performance convergence chromatography (UPCC ) was employed to separate zeaxanthin.Confocal laser scanning microscopy (CLSM ) was employed to observe the emulsion structure.The rheological analysis was performed to characterize the emulsion,which was combined with the hydrogen peroxide and storage stability tests to evaluate the performance of encapsulation with HIPEs in improving the stability of zeaxanthin.[Result ] The separation …

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Health Risk Assessment Of Multiple Mycotoxins In Rice , Maize , Soybean , And Wheat Flour Marketed In Shanghai, Zuoyin Zhu, Jie Wang, Junmei Ma, Hanke Zhao, Haisheng Cheng, Chengbao Huang, Junhua Yang Jul 2025

Health Risk Assessment Of Multiple Mycotoxins In Rice , Maize , Soybean , And Wheat Flour Marketed In Shanghai, Zuoyin Zhu, Jie Wang, Junmei Ma, Hanke Zhao, Haisheng Cheng, Chengbao Huang, Junhua Yang

Journal of Food Science and Biotechnology

[Objective ] This study aims to evaluate the potential health risks to consumers from exposure to multiple mycotoxins in grains.[Method ] Point and probabilistic assessment models were adopted to analyze the dietary exposure risks of adult residents in Shanghai to aflatoxins (AFs),ochratoxin A (OTA ),zearalenone (ZEN ),deoxynivalenols (DONs ),and fumonisins (FBs) through consumption of rice,maize,soybeans,and wheat flour.[Result ] The margin of exposure values (MoE ) for AFs in maize and aflatoxin G 1 (AFG 1) in soybeans exceeded 10 000,indicating no dietary exposure risk.In contrast,AFs in rice and wheat flour,as well as aflatoxin B 1 (AFB 1),aflatoxin B 2 (AFB …

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Identification And Spoilage Capacity Analysis Of Main Spoilage Bacteria In Pickles, Li Zhu, Huimin Li, Liejiang Yuan, Cancan Peng, Bo Zhou, Sheng Song, Haizhi Wu, Mingyang Zhu, Fangmei Wang, Yu Liu, Yuqian Hu, Ge Li, Yiqing Sun, Yi Zhou Jul 2025

Identification And Spoilage Capacity Analysis Of Main Spoilage Bacteria In Pickles, Li Zhu, Huimin Li, Liejiang Yuan, Cancan Peng, Bo Zhou, Sheng Song, Haizhi Wu, Mingyang Zhu, Fangmei Wang, Yu Liu, Yuqian Hu, Ge Li, Yiqing Sun, Yi Zhou

Journal of Food Science and Biotechnology

[Objective ] This study aims to identify the main spoilage bacteria and evaluate their spoilage capacity in the spoilage process of pickles.[Method ] High-throughput sequencing was employed to analyze the microbial community dynamics in the samples of pickles at the early,middle,and late stages of spoilage.The key spoilage bacteria were isolated,purified,and then identified through a combination of colony morphology observation,biochemical analysis,and 16S rDNA/ITS sequencing.Re-inoculation experiments were carried out for further validation of the primary spoilage bacteria in pickles.[Result ] Acinetobacter and Bacillus were the dominant spoilage bacterial genera across the three spoilage stages.Notably,Bacillus exhibited rapid growth over time,with the relative abundance …

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Establishment And Application Of An Immunomagnetic Bead-Based Melisa Method For Olaquindox, Ziyi Chen, Yanling Song, Junjie Sun, Yinlai Li, Lu Zhai, Yaofeng Zhang, Junli Feng, Renyao Jin Jul 2025

Establishment And Application Of An Immunomagnetic Bead-Based Melisa Method For Olaquindox, Ziyi Chen, Yanling Song, Junjie Sun, Yinlai Li, Lu Zhai, Yaofeng Zhang, Junli Feng, Renyao Jin

Journal of Food Science and Biotechnology

[Objective ] This study aims to establish a magnetic bead enzyme-linked immunosorbent assay (MELISA ) method for olaquindox (OLA ) based on immunomagnetic beads.[Method ] First,olaquindox-hapten conjugated with horseradish peroxidase (OLA-HS-HRP ) and immunomagnetic beads were synthesized.Then,the conjugated immunomagnetic beads and OLA-HS-HRP were used to screen and optimize the reaction conditions of MELISA.[Result ] The optimal working dilution factors for the immunomagnetic beads and OLA-HS-HRP were 100 times and 8 000 times,respectively,with the antibody dilution buffer being PBS solution (0.010 mol/L,pH 7.0) containing methanol at a volume fraction of 5%.Under the optimized conditions,the established standard equation was y=13.593ln x+17.173 (R2=0.994 …

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Establishment And Application Of A Uplc-Ms/Ms Method For Simultaneous Determination Of 39 Veterinary Drugs And Their Metabolites In Black Bone Chicken, Jiawei Du, Yongqin Li, Shuangyuan Jin, Xueyan Wang, Hongwu Wen, Xuelian Guo, Hao Li, Lihua Xu Jul 2025

Establishment And Application Of A Uplc-Ms/Ms Method For Simultaneous Determination Of 39 Veterinary Drugs And Their Metabolites In Black Bone Chicken, Jiawei Du, Yongqin Li, Shuangyuan Jin, Xueyan Wang, Hongwu Wen, Xuelian Guo, Hao Li, Lihua Xu

Journal of Food Science and Biotechnology

[Objective ] This study aims to comprehensively investigate the risk of veterinary drug residues in black bone chicken.[Method ] A method for rapid and simultaneous analysis of 39 veterinary drugs and their metabolites in three categories was established based on low-temperature ultrasonic extraction,solid-phase extraction pretreatment,and ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS ).The samples were extracted by Mcllvaine-Na 2EDTA and phosphate buffer via ultrasonic treatment at low temperatures,purified by Oasis HLB solid-phase extraction column,separated by T 3 chromatographic column,and quantified by the matrix matching external standard method.[Result ] The 39 veterinary drugs and their metabolites showed good linear relationships in …

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Cazyme Gene Cluster Diversity In Human Gut Microbiome, Yi Xing Jul 2025

Cazyme Gene Cluster Diversity In Human Gut Microbiome, Yi Xing

Department of Food Science and Technology: Dissertations, Theses, and Student Research

In gut microbiome research, carbohydrate-active enzyme gene clusters (CGCs) have emerged as key functional units for understanding microbial glycan degradation. Unlike taxonomic or broad pathway annotations, CGCs offer gene-cluster-level resolution and capture substrate-specific microbial functions. However, their diversity and distribution in relation to host metabolic phenotypes, such as obesity, remain poorly characterized. This study tests the hypothesis that the composition and abundance of fiber-targeting CGCs vary between obese and healthy human gut microbiomes, reflecting distinct microbial carbohydrate utilization strategies. To examine this, we constructed a high-quality reference CGC dataset comprising 94,019 clusters from the Unified Human Gastrointestinal Genome and profiled …

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Analysis Of Technological Properties Of Samples Of Wheat Flour Produced At Local Enterprises, Suvonqul S. Ravshanov, Feruza B. Abdullaeva, Ismoil Isabaev, Vazira Z. Nurmukhamedova, Аsad S. Otajonov Jun 2025

Analysis Of Technological Properties Of Samples Of Wheat Flour Produced At Local Enterprises, Suvonqul S. Ravshanov, Feruza B. Abdullaeva, Ismoil Isabaev, Vazira Z. Nurmukhamedova, Аsad S. Otajonov

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the study is to conduct a comparative analysis of the technological properties of samples of bakery flour obtained from local and imported varieties of wheat grain at enterprises in Uzbekistan. Existing national and international standard methods were used to study the technological properties of the selected flour samples. Statistical processing and correlation analysis of the obtained research results revealed a direct relationship between the quality and quantity of gluten from damaged starch.

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On The Possibility Of Predicting The Approximate Fatty Acid Composition Of Blends Based On The Iodine Number, Adiba M. Serkaeva, Akhror A. Abdurakhimov, Nafisa S. Husanova, Kamar P. Serkaev Jun 2025

On The Possibility Of Predicting The Approximate Fatty Acid Composition Of Blends Based On The Iodine Number, Adiba M. Serkaeva, Akhror A. Abdurakhimov, Nafisa S. Husanova, Kamar P. Serkaev

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the study was to conduct research to determine the possibility of predicting the approximate fatty acid composition of blends based on the iodine number. The fatty acid composition was determined by the chromatographic method and the results were subsequently used to identify the composition of blends by determining the iodine number. The iodine number was determined by calculation and titrimetric methods, comparing the differences between the obtained values. The detected deviations in values between the two methods do not exceed 0.4%, which means that it is possible to predict the approximate fatty acid composition of blends based …

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Utilization Of Watermelon Rind Waste Powder For Developing Bakery Products, Babar Khan, Asadullah Marri, Nida Shaikh, Asif Irshad Jun 2025

Utilization Of Watermelon Rind Waste Powder For Developing Bakery Products, Babar Khan, Asadullah Marri, Nida Shaikh, Asif Irshad

Journal of Bioresource Management

Watermelon rind waste powder (WRWP) is a rich source of dietary fiber and bioactive compounds; hence it could be used to develop functional foods such as bakery products. The present study aimed to utilize WRWP in bakery products development. The treatments included: T1 = Cake without WRWP, T2 = Cake with 10 % WRWP, T3= Cake with 20 % WRWP, T4= Biscuit without WRWP, T5 = Biscuit with 10 % WRWP, T6 = Biscuit with 20 % WRWP. The physicochemical and nutritional properties of watermelon rind waste powder were also determined. The …

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Research Progress In The Application Of Tea Polyphenols In Meat Processing And Preservation, Yanting Gao, Huanhuan Li, Teng Xu, Ke Zhao, Mingwei Su, Liwen Wu, Honggang Tang Jun 2025

Research Progress In The Application Of Tea Polyphenols In Meat Processing And Preservation, Yanting Gao, Huanhuan Li, Teng Xu, Ke Zhao, Mingwei Su, Liwen Wu, Honggang Tang

Journal of Food Science and Biotechnology

Tea polyphenols are the general term for polyphenols in tea,mainly including catechins,flavonoids,and anthocyanins,which have antioxidant and antimicrobial properties.The author reviewed the structural characteristics and the antioxidant and antibacterial mechanisms of tea polyphenols.Additionally,the application of tea polyphenols in the processing and preservation of meat products is summarized,providing a theoretical basis for their use in meat products.Studies have shown that tea polyphenols can achieve anti-oxidation by scavenging free radicals,chelating metal ions,and inhibiting oxidase activity.Moreover,tea polyphenols can inhibit cell growth and proliferation by inhibiting the activities of enzymes involved in cell metabolism and damaging the cell membrane system.As natural antioxidants,tea polyphenols can significantly …

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Safety Properties , Growth Characteristics , And Fermentation Performance Of Tetragenococcus Halophilus, Ranhui Lyu, Yanhua Zhong, Yang You, Runhan Yuan, Enyi Guan, Shan Duan Jun 2025

Safety Properties , Growth Characteristics , And Fermentation Performance Of Tetragenococcus Halophilus, Ranhui Lyu, Yanhua Zhong, Yang You, Runhan Yuan, Enyi Guan, Shan Duan

Journal of Food Science and Biotechnology

[Objective ] The physiological characteristics vary greatly among different strains of Tetragenococcus halophilus (T.halophilus ).By comparing some indicators of safety properties,growth characteristics,and fermentation performance of T.halophilus strains from different sources,the authors aim to establish a regular understanding of this bacterial species.[Method ] Seventeen strains of T.halophilus derived from different aquatic products and soy sauce mash were selected,and their antibiotic resistance,biogenic amine production,hemolytic activity,growth under different environmental conditions,and flavor characteristics after fermenting soybean hydrolysate were determined.Additionally,correlation analysis was conducted to identify the associations among various indicators.[Result ] In terms of safety properties,the 17 strains were generally sensitive to penicillin,vancomycin,and tetracycline,but resistant …

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Analysis Of Volatile Aroma Components Of Black Tea Samples From Different Tea Varieties In Guangxi Based On Hs-Spme-Gc-Ms Technology, Yunxiong Zhao, Hongyu Feng, Ziping Li, Baogui Liu, Yunxian Wang, Jingjing Yang, Lianfeng Luo Jun 2025

Analysis Of Volatile Aroma Components Of Black Tea Samples From Different Tea Varieties In Guangxi Based On Hs-Spme-Gc-Ms Technology, Yunxiong Zhao, Hongyu Feng, Ziping Li, Baogui Liu, Yunxian Wang, Jingjing Yang, Lianfeng Luo

Journal of Food Science and Biotechnology

[Objective ] This study aims to analyze the characteristics of volatile aroma components and key aroma components of black tea samples from different tea varieties in Guangxi.[Method ] The aroma components of 12 black tea samples from Guangxi were identified by sensory quality evaluation,headspace solid-phase microextraction-gas chromatography-mass spectrometry （HS-SPME-GC-MS ）,hierarchical cluster analysis,and orthogonal partial least squares-discrimination analysis (OPLS-DA ).[Result ] The black tea samples from different tea varieties showed different aroma characteristics and mainly presented a floral fruity aroma or a sweet aroma.The black tea from ‘Wuniuzao ’ demonstrated the highest comprehensive score (91.20),being a representative of black tea with …

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Construction , Structural Characterization , And Antioxidant Activity Evaluation Of Yam Polysaccharide-Selenium Nanoparticle Complexes, Yidong Xiao, Lanmei Ou, Mengmeng Zhao Jun 2025

Construction , Structural Characterization , And Antioxidant Activity Evaluation Of Yam Polysaccharide-Selenium Nanoparticle Complexes, Yidong Xiao, Lanmei Ou, Mengmeng Zhao

Journal of Food Science and Biotechnology

[Objective ] This study explored the structural characteristics and in vitro antioxidant activity of yam polysaccharide-selenium nanoparticle (YP-SeNPs ) complexes.[Method ] Yam polysaccharide (YP) were obtained through hot water extraction and then purified by purification,diethylaminoethyl cellulose 52 (DEAE-52) column chromatography,and dialysis.With YP as a template,YP-SeNPs were prepared with different Se/YP mass ratios (1∶3,1∶1,and 4∶3) in an oxidation-reduction system comprising ascorbic acid (VC) and sodium selenite (Na 2SeO 3）.The complexes were characterized via multiple techniques,including visual observation of solution color,ultraviolet-visible absorption (UV-vis ) spectroscopy,particle size measurement,transmission electron microscopy (TEM ),scanning electron microscopy (SEM ),atomic force microscopy (AFM ),Fourier-transform infrared spectroscopy (FT-IR …

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Preparation And Anti-Exercise Fatigue Effect Evaluation Of Γ-Aminobutyric Acid-Enriched Milk Fermented With Lactic Acid Bacteria, Dong Liu, Yuning Yang, Fangfei Dou, Yuxing Li, Minghai Ju Jun 2025

Preparation And Anti-Exercise Fatigue Effect Evaluation Of Γ-Aminobutyric Acid-Enriched Milk Fermented With Lactic Acid Bacteria, Dong Liu, Yuning Yang, Fangfei Dou, Yuxing Li, Minghai Ju

Journal of Food Science and Biotechnology

[Objective ] This study aims to prepare γ-aminobutyric acid (GABA )-enriched milk fermented with lactic acid bacteria and evaluate its anti-exercise fatigue effect.[Method ] High GABA-producing lactic acid bacteria were selected and used to ferment milk with a commercial starter culture.A mouse model of exercise fatigue was established by four weeks of exhaustive swimming training.After four weeks,the exhaustive swimming time,serum biochemical indicators,antioxidant indicators,and energy storage substance levels were measured and analyzed.[Result ] Lactobacillus plantarum (L.plantarum ) LP- 5 was selected as the strain for fermentation,and its GABA yield reached (1.340±0.003) g/L.The fermented milk showed the titratable acidity of (46.29±2.01) ºT,the …

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