检索结果-南通市图书馆

4-Hydroxy-2-Oxoglutaric Acid,A KeyMetabolite Involved in Trypsin-Regulation of Arginine Metabolism in Hylocereus undatus during Storage

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2024年第5期93卷 885-900页

作者： Bairu Li Jingyu Jia Hemin Wang Jiaju Sun Enyan Chen Xin Li College of food and Bioengineering Henan University of Science and TechnologyLuoyang471023China Henan Engineering Research Center of food microbiology Luoyang471023China National Demonstration Center for Experimental food Processing and Safety Education Luoyang471000China

Trypsin,a novel superoxide scavenger,significantly enhances the storage quality of Hylocereus undatus(***).To elucidate the preservation mechanism of trypsin on ***,a widely targeted metabolomic analysis,and transcriptomics analysis were ***,a total of 453 metabolites were identified,with organic acids and their derivatives constituting the largest proportion(25%).Amino acids and their metabolites,prominent among organic acids,were further *** them,73 metabolites were associated with amino acids,and 37 exhibited significant *** most enriched Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway was arginine biosynthesis(map00220),with polyamine metabolites showing the most pronounced differences,particularly spermine(FC=1.7594).Compared with the control group,4-hydroxy-2-oxoglutaric acid was significantly upregulated(FC=2.117)in the process of spermine ***,the results of Gene Ontology(GO)and KEGG enrichment analysis of the *** transcriptome profile revealed that trypsin treatment led to 187 differentially expressed genes associated with *** GO and KEGG analyses exhibited significant enrichment in the spermine biosynthetic process(GO:0006597)(map:00220)within the arginine biosynthesis ***,most enzymes and metabolites within the spermine biosynthesis pathway in *** were *** results of the PPI network highlighted that ADC,SPDS,and SAMDC,among others,were pivotal proteins involved in trypsin-regulated arginine metabolism and spermine *** study revealed that trypsin could significantly delay postharvest senescence of *** at room *** effect might be attributed to trypsin triggering the synthesis of 4-hydroxy-2-oxoglutaric acid in the fruit peel,thereby promoting the biosynthesis of spermine and other polyamines.

关键词： Trypsin arginine transcriptomics widely targeted metabolomics

EuSHT Acts as a Hub Gene Involved in the Biosynthesis of 6-Hydroxyluteolin and Quercetin Induced by Salt Stress in Eucommia ulmoides

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2024年第8期93卷 2095-2113页

作者： Fuxin Li Enyan Chen Xinxin Chen Jingyu Jia Hemin Wang Jie Zhang Jianrui Sun Xin Li College of food and Bioengineering Henan University of Science and TechnologyLuoyang471023China Henan Engineering Research Center of food microbiology Luoyang471023China National Demonstration Center for Experimental food Processing and Safety Education Luoyang471000China

Salt stress inhibits plant growth and affects the biosynthesis of its secondary *** are natural compounds that possess many important biological activities,playing a significant role in the medicinal activity of Eucommia ulmoides(***).To investigate the mechanism by which salt stress affects the biosynthesis of flavonoids in ***,a comprehensive analysis of metabolomics and transcriptomics was *** results indicated that salt stress led to the wilting and darkening of *** leaves,accompanied by a decrease in chlorophyll levels,and significantly induced malondialdehyde(MDA)and relative electrical *** salt stress,most metabolites in the flavonoid biosynthesis pathway of *** were upregulated,indicating that flavonoid biosynthesis is likely the main induced pathway under salt *** them,secondary metabolites such as 6-Hydroxyluteolin and Quercetin are likely key metabolites induced by salt *** correlation analysis of transcriptomics and metabolomics revealed that EuSHT is a hub gene induced by salt stress,promoting the production of flavonoids such as *** co-expression network showed a strong positive correlation between EuSHT and the biosynthesis of 6-Hydroxyluteolin and Quercetin,while it exhibited a negative correlation with Catechin *** branches leading to Luteolin and Dihydroquercetin are likely the main pathways for flavonoid compound biosynthesis in the plant stress response during salt *** results of this study provided a preliminary mechanism of secondary metabolites such as flavonoids in the medicinal plant *** induced by salt stress and provided new theoretical support for discussing the mechanism of plant stress *** also provided useful information for subsequent exploration of resistance genes in ***.

关键词： Eucommia ulmoides flavonoid salt stress transcriptomics widely targeted metabolomics

Application of the Principles of “Green Chemistry” for the Synthesis of 10-Undecylenic Aliphatic Esters with Antimicrobial Activity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2020年第6期8卷 675-686页

作者： Dragomir Vassilev Nadezhda Petkova Yulian Tumbarski Milena Koleva Panteley Denev Department of Physics Chemistry and EcologyTechnical University of GabrovoGabrovo5300Bulgaria Department of Inorganic and Organic Chemistry University of Food TechnologiesPlovdiv4002Bulgaria Department of microbiology University of Food TechnologiesPlovdiv4002Bulgaria

Undenicylic acid(10:1)is known as an antifungal agent and an active ingredient of many topical medicines[1–6].The present research investigates the preparation of aliphatic esters of 10-undecylic acid with butanol and i-amyl alcohol by the conventional and ultrasound-assisted syntheses as well as the structural elucidation of the resulting compounds,by FTIR and NMR *** antimicrobial properties of the obtained 10-undecylenic esters were tested against Gram-positive bacteria(Staphylococcus aureus;Enterococcus faecalis;Listeria monocytogenes),Gram-negative bacteria(Escherichia coli;Salmonella sp.)and filamentous fungi(Penicillium sp.;Aspergillus niger;Fusarium moniliforme)using the conventional agar-well diffusion *** results demonstrated that all esters had insignificant antibacterial activity.i-Amyl-10-undecylenate and t-butyl-10-undecylenate showed activity against both Gram-positive and Gram-negative bacteria,while i-butyl-10-undecylenate and n-butyl-10-undecylenate were effective only against Gram-positive bacteria *** contrast,all 10-undecylenic esters demonstrated high antifungal activity,which was most pronounced in ***,the obtained products can be successfully used as promising antifungal agents for various pharmaceutical formulations as well as biocontrol means against plant pathogens.

关键词： 10-undecylenate alkyl esters FTIR and NMR spectroscopy antimicrobial activity

Highly efficient fermentation of glycerol and 1,3-propanediol using a novel starch as feedstock

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

food Bioscience 2022年第2期46卷 200-208页

作者： You Yang Ying Chen Yanling Jin Jing Liu Xiang Qin Wenjun Liu Ling Guo Department of Pediatrics Children Hematological Oncology and Birth Defects LaboratoryThe Affiliated Hospital of Southwest Medical UniversitySichuan Clinical Research Center for Birth DefectsLuzhouSichuan646000China CAS Key laboratory of Environmental and Applied microbiology Environmental Microbiology Key Laboratory of Sichuan ProvinceChengdu Institute of BiologyChinese Academy of SciencesChengduSichuan610041China National Engineering Research Center for Non-food Biorefinery Guangxi Academy of SciencesNanningGuangxi530007China

As a potential cost-effective feedstock for highly efficient fermentation of glycerol and its downstream product 1,3-propanediol(1,3-PD),duckweed starch was characterized and used for glycerol fermentation,for the first time,in this *** involved in glycerol biosynthesis(gpd1 and gpp2)were overexpressed in Escherichia coli,and genes involved in glycerol catabolism(glpK and gldA)were disrupted,which led to significantly decreased residual sugar levels and dramatically increased glycerol *** maximum glycerol concentration in fed-batch fermentation reached 102.72 g L^(-1) at 28 h,and the glycerol productivity was 3.67 g L^(-1) h^(-1),which,to our knowledge,is the highest productivity thus far ***,glycerol broth was fermented into 1,3-PD by Klebsiella *** concentration,conversion rate and productivity of 1,3-PD reached 35.54 g L^(-1),40.28%and 0.89 g L^(-1) h^(-1),respectively,without *** summary,the duckweed starch-to-glycerol-to-1,3-PD process is feasible and shows potential for improving glycerol industry competitiveness.

关键词： Duckweed starch Glycerol 1,3-Propanediol Fed-batch fermentation Biosynthesis

Biochemical and Microbial Properties of Palm Wine: Effect of Tapping Length and Varietal Differences

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

food and Nutrition Sciences 2016年第9期7卷 763-771页

作者： Detto Karamoko N’Dédé Théodore Deni Jean-Luc Aboya Moroh Koffi Maïzan Jean-Paul Bouatenin Koffi Marcellin Dje laboratory of food microbiology and Biotechnology Department of Biochemistry and Food Sciences University Peleforo Gon Coulibaly of Korhogo Korhogo Cote d’Ivoire laboratory of Biotechnology and food microbiology Department of Food Sciences and Technology University Nangui Abrogoua of Abidjan Abidjan Cote d’Ivoire

The effects of variety and tapping length on several physical, biochemical, nutritional and micro-biological parameters (viscosity, pH, Total Titratable Acidity (TTA), fermenting microorganisms, contaminants) of palm wine extracted from two varieties of palm oil tree (Dura and Tenera) were studied. Each variety presented its own palm wine specific characteristics regarding the chosen parameters. Microbiological and biochemical contents of palm wine were determined during the tapping of Dura and Tenera felled oil palm trees for 4 weeks. Some differences in chemical compositions between fresh palm wine samples of two palm trees varieties were observed. The exudates obtained during the first day of tapping of Dura palm wine were very sugary, less sour and did not contain substantial concentrations of alcohol but the highest loads of microorganisms were observed in Tenera palm wine. Throughout the tapping of palm wine, yeasts and lactic acid bacteria population changed with undoubtedly influence on the palm wine quality.

关键词： Viscosity Palm Wine Fermentation Palm Oil Trees

The enriched gut commensal Faeciroseburia intestinalis contributes to the anti-metabolic disorders effects of the Ganoderma meroterpene derivative

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

food Science and Human Wellness 2022年第1期11卷 85-96页

作者： Shanshan Qiao Kai Wang Chang Liu Nan Zhou Li Bao Jun Wang Shuangjiang Liu Hongwei Liu State Key laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key laboratory of Microbial Technology Shandong UniversityTsingdao 266237ShandongChina State Key laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Beijing Shijitan Hospital Capital Medicinal UniversityBeijing 100038China CAS Key laboratory of Pathogenic microbiology and Immunology Institute qf MicrobiologyChinese Academy of SciencesBeijing 100101China

Previous study demonstrated that Ganoderma meroterpene derivative(GMD)increased the abundance of butyrate-producing bacteria in gut and subsequently delivered anti-metabolic disorder effect of *** specify the key commensal bacteria associating with the beneficial effects,we tried to isolate and compare the microbiota from the cecal samples of GMD-and vehicle-treated ob/ob mice,and further identified butyrate-producing bacterial *** was found that Faeciroseburia intestinalis was enriched and 11 strains affiliated to *** were cultivated from the gut of GMD-treated *** vitro assay attested butyrate production by representative strain of *** administration with *** further demonstrated its benefits on regulating hyperglycemia and hyperlipidemia,on decreasing plasma lipopolysaccharide(LPS)and inflammation,and on improving hepatic *** with *** effectively enhanced the level of gut butyrate,which subsequently ameliorated the intestinal barrier function and activated epithelial PPAR-γ signaling pathway to regulate microbiome homeostasis in *** study demonstrated that the causal relationship between the butyrate-producing bacteria and the GMD's therapeutic effects and confirmed the important function of the butyrate-producing *** in maintaining host metabolism homeostasis.

关键词： Faeciroseburia intestinalis Ganoderma meroditerpene derivative Gut microbiome Butyrate Hypoglycemia Hypolipidemia

Extraction and purification of ustiloxin A from rice false smut balls by a combination of macroporous resin and high-speed countercurrent chromatography

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

food Production, Processing and Nutrition 2020年第1期2卷 287-299页

作者： Gang Wang Dan He Fengchun Zhao Junqiang Hu Yin-Won Lee Jianrong Shi Jianhong Xu Jiangsu Key laboratory for food Quality and Safety-State Key laboratory Cultivation Base Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and QualityMinistry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation(Nanjing)Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and NutritionJiangsu Academy of Agricultural SciencesNanjingPeople’s Republic of China School of food and Biological Engineering Jiangsu UniversityZhenjiangPeople’s Republic of China Department of microbiology College of Life ScienceKey Laboratory for Agriculture MicrobiologyShandong Agricultural UniversityTai’anPeople’s Republic of China School of Agricultural Biotechnology Seoul National UniversitySeoul 08826Republic of Korea

Rice false smut is an emerging plant disease *** A(UstA)is the major mycotoxin found in rice false smut balls,which are fungal colonies in rice *** this study,a new method consisting of macroporous resin column chromatography and high-speed countercurrent chromatography(HSCCC)was developed for UstA *** was extracted by a 3.81%HCOOH solution and adsorbed by XAD-4 *** was then eluted by a 40%methanol solution supplemented with 0.1%trifluoroacetic acid(TFA).Further purification was achieved by HSCCC using a two-phase solvent system consisting of n-butanol/TFA/H_(2)O(1/0.05/1,v/v/v).Under the optimized conditions,225 mg of UstA was obtained with a purity of 97.39%in a single run,with a final recovery of 65.2%.An inhibitory effect on seed germination of wheat and maize caused by UstA was observed in a preliminary phytotoxicity assay.

关键词： Ustiloxin A Rice false smut Preparative purification Macroporous resin High-speed counter-current chromatography Phytotoxicity assay

Changes and correlation of microorganism and flavor substances during persimmon vinegar fermentation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

food Bioscience 2022年第2期46卷 477-486页

作者： Dahong Wang Mengyang Wang Luwei Cao Xiaotong Wang Jianrui Sun Jiangfeng Yuan Shaobin Gu College of food and Bioengineering Henan University of Science&TechnologyLuoyang471023China Henan Engineering Research Center of food microbiology Luoyang471023China National Demonstration Center for Experimental food Processing and Safety Education Luoyang471023China

To investigate the microbial diversity and the change of the flavor substances during the traditional natural persimmon vinegar fermentation,two group samples from alcohol fermentation stage(A)and acetic acid fermentation stage(B)were *** results showed that Burkholderia,Lactobacillus,Acetobacter,Komagataeibacter were the main bacteria,and the major fungi were Saccharomyces,Hanseniaspora,Hortaea,and Cladosporium at the genus *** contents of flavonoids and polyphenols in B increased by 17.91%and 26.59%compared with A,*** superoxide anion scavenging activity significantly increased by 20.15%.The contents of total free amino acids were 5709.99±410.36 mg/L and 5736.16±472.02 mg/L,and the total contents of 9 organic acids were 19.89±1.20 g/L and 33.77±2.49 g/L in samples A and B,*** correlation analysis showed that 11 flavor compounds were related to Lactobacillus and Leuconostoc;8 and 10 compounds were respectively related to Komagataeibacter and Acetobacter;13 and 19 flavor compounds were respectively associated with Saccharomyces and *** Partial Least Square(OPLS)model showed that the contents of Leu,Lys,and lactic acid were mainly associated with fungi,andγ-aminobutyric acid(GABA)content was correlated with Lactobacillus,Acetobacter,Leuconostoc,and *** study revealed the relationship between microbial diversity and flavor compounds in persimmon vinegar produced by spontaneous *** results can provide a theoretical support for the safety and health assessment of persimmon vinegar.

关键词： Persimmon vinegar fermentation Microbial diversity Flavor substances Correlation analysis

Insights into the microbial diversity and community dynamics of Chinese traditional fermented foods from using high-throughput sequencing approaches

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2017年第4期18卷 289-302页

作者： Guo-qing HE Tong-jie LIU Faizan A.SADIQ Jing-si GU Guo-hua ZHANG College of Biosystems Engineering and food Science Zhejiang University Hangzhou 310058 China Zhejiang Provincial Key laboratory of food microbiology Zhejiang University Hangzhou 310058 China

Chinese traditional fermented foods have a very long history dating back thousands of years and have become an indispensable part of Chinese dietary culture. A plethora of research has been conducted to unravel the composition and dynamics of microbial consortia associated with Chinese traditional fermented foods using culture- dependent as well as culture-independent methods, like different high-throughput sequencing （HTS） techniques. These HTS techniques enable us to understand the relationship between a food product and its microbes to a greater extent than ever before. Considering the importance of Chinese traditional fermented products, the objective of this paper is to review the diversity and dynamics of microbiota in Chinese traditional fermented foods revealed by HTS approaches.

关键词： Chinese traditional fermented foods Microbiota High-throughput sequencing