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Metabolic profiles and morphological characteristics of leaf tips among different sweet potato(Ipomoea batatas Lam.)varieties

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Journal of Integrative agriculture 2024年第2期23卷 494-510页

作者： Wenqing Tan Xinbo Guo Zhangying Wang Rong Zhang Chaochen Tang Bingzhi Jiang Ruixue Jia Yuanyuan Deng Shaohai Yang Jingyi Chen Crops research institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Crop Genetic Improvement of Guangdong ProvinceGuangzhou 510640China School of food Science and Engineering South China University of TechnologyGuangzhou 510640China sericultural&agri-food research institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional FoodsMinistry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China

Sweet potato leaf tips have high nutritional value,and exploring the differences in the metabolic profiles of leaf tips among different sweet potato varieties can provide information to improve their *** this study,a UPLC-Q-Exactive Orbitrap/MS-based untargeted metabolomics method was used to evaluate the metabolites in leaf tips of 32 sweet potato *** varieties with distinct overall metabolic profiles(A01,A02,and A03),two varieties with distinct profiles of phenolic acids(A20 and A18),and three varieties with distinct profiles of flavonoids(A05,A12,and A16)were *** addition,a total of 163 and 29 differentially expressed metabolites correlated with the color and leaf shape of sweet potato leaf tips,respectively,were identified through morphological *** comparison analysis of the phenotypic traits and a metabolite-phenotypic trait correlation analysis indicated that the color differences of sweet potato leaf tips were markedly associated with ***,the level of polyphenols was correlated with the leaf shape of sweet potato leaf tips,with lobed leaf types having higher levels of polyphenols than the entire leaf *** findings on the metabolic profiles and differentially expressed metabolites associated with the morphology of sweet potato leaf tips can provide useful information for breeding sweet potato varieties with higher nutritional value.

关键词： sweet potato leaf tips phenotypic traits metabolic profile differentially expressed metabolites polyphenols

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The in vitro digestion fates of diacylglycerol under different intestinal conditions:a potential lipid source for lipid indigestion patients

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food Science and Human Wellness 2024年第2期13卷 1079-1092页

作者： Qingqing Xu Weifei Wang Dongxiao Sun-Waterhouse Qian Zou Menglei Yan Xuan Liu Dongming Lan Yonghua Wang School of food Science and Engineering South China University of TechnologyGuangzhou 510640China sericultural and agri-food research institute Guangdong Academy of Agricultural SciencesGuangzhou 510610China School of Chemical sciences The University of AucklandPrivate Bag 92019New Zealand guangdong Youmei institute of Intelligent Bio-manufacturing Co. Ltd.Foshan 528200China

The in vitro digestion models mimicking the gastrointestinal(GI)tract of general population and lipid indigestion patients(with lower levels of bile salts or pancreatic lipase)were selected to investigate whether diacylglycerols(DAGs)are potential good lipid sources for these *** oil-based DAG(LD)and linseed oil(LT)were ***-based emulsion((83.74±1.23)%)had higher lipolysis degree than LT-based emulsion((74.47±1.16)%)when monitoring the GI tract of normal population as previously *** conditions seriously decreased the digestive degree of LT-based emulsion((40.23±2.48)%-(66.50±3.70)%)while showed less influence on LD-based emulsion((64.18±2.41)%-(81.85±3.45)%).As opposed to LT-based emulsion,LD-based emulsion exhibited preference for releasing unsaturated fatty acids(especially oleic acid andα-linolenic acid)due to their different glycerolipid ***-based emulsion showed potential for providing lipids and nutrients(including essential fatty acids)for lipid indigestion patients.

关键词： Diacylglycerol In vitro digestion Lipolysis level Cholestatic Exocrine pancreatic insufficiency

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Structural elucidation of mulberry leaf oligosaccharide and its selective promotion of gut microbiota to alleviate type 2 diabetes mellitus

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food Science and Human Wellness 2024年第4期13卷 2161-2173页

作者： Tenggen Hu Yuanshan Yu Jijun Wu Yujuan Xu Gengsheng Xiao Kejing An Erna Li Sentai Liao Yuxiao Zou sericultural&agri-food research institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional FoodsMinistry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China Huagongliya(Foshan)Technology Industry Co. Ltd.Foshan 528313China Heyuan Branch Guangdong Laboratory for Lingnan Modern AgricultureHeyuan 517001China Zhongkai University of agriculture and Engineering Guangzhou 510225China

Two oligosaccharide fractions(MLO 2-1 and 2-2)were purified from enzymatic hydrolysate of mulberry leaf *** results of simulated digestion showed that MLO 2-2 was a digestible oligosaccharide,which could be degraded by human digestive juice;while MLO 2-1 possessed the non-digestible property in the upper gastrointestinal tract and performed the function by regulating the gut ***,MLO 2-1 was selected for the further *** structure of MLO 2-1 was elucidated as follow:α-T-Glcp-(1→3)-β-Glcp-(1→5)-α-Araf-(1→5)-α-Araf-1→5)-α-Araf-(1→3)-α-(2-OAc)-*** in vitro fecal fermentation results showed that MLO 2-1 could modulate the composition of gut ***,MLO 2-1 was effectively metabolized by fecal bacteria to produce lactate and short chain fatty acids,especially acetate and *** specific metabolic pathways of MLO 2-1 by gut microbiota were further *** microbiota analysis revealed that MLO 2-1 selectively promoted the growth of Ligilactobacillus murinus,a commensal bacterium presented a reduced level in T2DM *** experiments indicated that MLO 2-1 and *** exhibited hypoglycemic *** results demonstrated that MLO 2-1 might alleviate T2DM by selectively accelerating the proliferation of ***.

关键词： Mulberry leaf oligosaccharide Characterization Gut microbiota Lactobacillus murinus Hypoglycemic activity

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Antibacterial mechanism of kojic acid and tea polyphenols against Escherichia coli O157:H7 through transcriptomic analysis

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food Science and Human Wellness 2024年第2期13卷 736-747页

作者： Yilin Lin Ruifei Wang Xiaoqing Li Keren Agyekumwaa Addo Meimei Fang Yehui Zhang Yigang Yu School of food sciences and Engineering South China University of TechnologyGuangzhou 510640China Sericulture&agri-food research institute guangdong academy of agricultural sciences Key Laboratory of Functional FoodsMinistry of Agriculture and Rural AffairsGuangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China research Center of food Safety and Detection College of Food Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Escherichia coli O157:H7 is one of the major foodborne pathogenic bacterial that cause infectious diseases in *** previous found that a combination of kojic acid and tea polyphenols exhibited better activity against *** O157:H7 than using either *** study aimed to explore responses underlying the antibacterial mechanisms of kojic acid and tea polyphenols from the gene *** functional enrichment analysis by comparing kojic acid and tea polyphenols individually or synergistically against *** O157:H7 found that acid resistance systems in kojic acid were activated,and the cell membrane and genomic DNA were destructed in the cells,resulting in“oxygen starvation”.The oxidative stress response triggered by tea polyphenols inhibited both sulfur uptake and the synthesis of ATP,which affected the bacteria's life metabolic ***,we found that kojic acid combined with tea polyphenols hindered the uptake of iron that played an essential role in the synthesis of DNA,respiration,tricarboxylic acid *** results suggested that the iron uptake pathways may represent a novel approach for kojic acid and tea polyphenols synergistically against *** O157:H7 and provided a theoretical basis for bacterial pathogen control in the food industry.

关键词： Kojic acid Tea polyphenols Antibacterial mechanism Escherichia coli O157:H7 RNA-seq

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Anti-skin aging effects and bioavailability of collagen tripeptide and elastin peptide formulations in young and middle-aged women

Journal of dermatologic science and cosmetic technology

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Journal of dermatologic science and cosmetic technology 2024年第2期1卷 26-37页

作者： Shan Lu Silu Zhang Yun Wang Jiayi Ni Tiantian Zhao Guoxun Xiao Wonderlab Innovation Centre for Healthcare Shenzhen Porshealth Bioengineering CoLtd.Shenzhen 518116China Sericulture&agri-food research institute guangdong academy of agricultural sciences Key Laboratory of Functional FoodsMinistry of Agriculture and Rural affairsGuangdong Key Laboratory of Agricultural Products ProcessingGuangzhouGuangdong 510610China Department of Dermatology Shanghai Ninth People‘s HospitalShanghai Jiao Tong University School of MedicineShanghai 200125China Sprim(China)Consulting Co.Ltd. Shanghai 201201China e Department of food Science Rutgers UniversityNew BrunswickNJ 08901United States

Background:Collagen peptides(CP),including tripeptides and elastin peptides(EP),are known for their in vitro and in vivo anti-skin aging *** positive results in animal models,the combination effects of CP and EP and the bioavailability of CP in human studies,particularly in young and middle-aged women,remain ***:To evaluate the effects of an orally administered collagen drink combining CP and EP on the skin health of young and middle-aged *** and Methods:A single-center,randomized,double-blind,parallel-controlled trial was conducted,utilizing the WONDERLABR fish collagen tripeptide *** consumed the drink over an 8-week ***:Compared to the placebo group,the collagen drink group showed significant improvements in skin hydration(39.19%increase),transepidermal water loss(33.45%decrease),skin elasticity(25.37%increase),dermal collagen content(21.64%increase),pore size(7.94%decrease),wrinkle length(18.09%decrease),skin smoothness(2.85%improvement),and skin roughness(15.32%decrease).Overall pore volume decreased by 60%,and visual assessments indicated a decrease in skin luminosity by 15.20%and smoothness index by 22.55%.Mass spectrometry demonstrated a significant increase in collagen efficacy components,including blood pH and GPH levels(P<0.05).Conclusion:The study confirmed the combination nourishing and anti-skin aging effects of EP and CP on the skin of young and middle-aged women,demonstrating significant improvements in various skin parameters and good bioavailability of collagen peptides.

关键词： Collagen tripeptides Elastin peptides Anti-aging Skin protection Peptide absorption

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Effect of the degree of milling on the physicochemical properties,pasting properties and in vitro digestibility of Simiao rice

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Grain & Oil Science and Technology 2021年第2期4卷 45-53页

作者： Zhiming Wang Mingwei Zhang Guang Liu Yuanyuan Deng Yan Zhang Xiaojun Tang Ping Li Zhencheng Wei sericultural&agri-food research institute guangdong academy of agricultural sciences Key Laboratory of Functional FoodsMinistry of Agriculture and Rural AffairsGuangdong Key Laboratory of Agricultural Products Processing

Simiao rice is a variety of long-grain Indica rice popular in South ***,researches on the milling technology of Simiao rice are *** effect of different degrees of milling(DOMs)of Simiao rice(0-12%)were evaluated in terms of the physicochemical properties and in vitro starch digestibility of the *** results showed that,as the DOM increased from 0 to 12%,the head rice yield(HRY)and the content of protein,lipid,dietary fiber,vitamin B1,vitamin E and niacin nonlinearly decreased,while the content of total starch and amylose and paste viscosity parameters nonlinearly *** differences in chemical constituents between the brown and milled Simiao rice with different DOMs lead to the variation in their pasting properties and in vitro *** of lower content of slowly digestible starch(SDS)and resistant starch(RS),milled Simiao rice exhibited greater digestibility and a higher estimated glycaemic index(EGI).The EGI of Simiao rice ranged from 77.98 to 85.55,and remained almost constant(approximately 84)when the DOM was above 4%.Correlation analysis indicated that the EGI had strong negative correlations with lipid,protein,dietary fiber and RS,but a positive correlation with *** results provide theoretical guidance for the production of Simiao rice with desired physicochemical properties and digestibility by adjusting the DOM.

关键词： Simiao rice Degree of milling In vitro digestibility Estimated glycaemic index

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Structural identification and antioxidant potency evaluation of pomelo vinegar polyphenols

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food Bioscience 2022年第3期47卷 645-653页

作者： Bo Zou Ting Li Yujuan Xu Yuanshan Yu Jijun Wu sericultural & agri-food research institute guangdong academy of agricultural sciences/Key Laboratory of Functional foods Ministry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products ProcessingGuangzhou510610China

Polyphenols are the main antioxidant ingredient of honey pomelo ***,the antioxidant contributions of various individual phenolics to total polyphenols and antioxidant mechanism are *** this study,phenolic compounds were identified,and the antioxidant potency and antioxidant contribution of individual phenolics were *** antioxidant mechanism was also studied in HepG2 cells.A total of seven phenolics were identified,including naringin,narirutin,rhoifolin,vanillic acid,methyl hesperidin,vicenin-2,and ferulic acid;among which,ferulic acid had the highest extracellular antioxidant potency,while methyl hesperidin had the *** considering the synergistic effect of the phenolics,naringin,ferulic acid,and vicenin-2 were major contributors to the antioxidant potency of pomelo vinegar polyphenols(PVP)using four antioxidant *** at the concentrations of 20μg/mL and 100μg/mL had a protective effect against H_(2)O_(2)-induced oxidative damage to HepG2 *** also reduced lactic dehydrogenase(LDH)release and reactive oxygen species(ROS)accumulation in *** western blotting results revealed that PVP promoted translocation of NFE2-related factor 2(Nrf2)from the cytoplasm to the nucleus and up-regulated the expression of its governed antioxidant enzymes such as NAD(P)H:quinone oxidoreductase 1(NQO1),heme oxygenase-1(HO-1),glutathione S-transferase A2(GSTA2),and glutamate-cysteine ligase catalytic subunit(GCLC).In summary,PVP could serve as a potential therapeutic agent for oxidative stress-related disorders.

关键词： Antioxidant Polyphenols Pomelo vinegar HepG2 Nrf2

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BmCalpains are involved in autophagy and apoptosis during metamorphosis and after starvation in Bombyx mori

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Insect Science 2018年第3期25卷 379-388页

作者： Hui-Yu Yi Wan-Ying Yang Wen-Mei Wu Xing-Xia Li Xiao-Juan Deng Qing-Rong Li Yang Cao Yang-Jin Zhong Ya-Dong Huang guangdong Provincial Key Laboratory ofAgro-animal Genomics and Molecular Breeding/guangdong Provincial Sericulture and Mulberry Engineering research Center College of Animal Science South China Agricultural University Guangzhou China College of Life Science and Technology Jinan University Guangzhou China The sericultural and agri-food research institute of the guangdong academy of agricultural sciences Guangzhou China

Apoptosis and autophagy play crucial roles during Bombyx mori metamorphosis and in response to various adverse conditions, including starvation. Recently, calpain, one of the major intracellular proteases, has been reported to be involved in apoptosis and autophagy in mammals. BmATG5 and BmATG6 have been identified to mediate apoptosis following autophagy induced by 20-hydroxyecdysone and starvation in B. mori. However, B. mori calpains and their functions remain unclear. In this study, phylogenetic analysis of calpains from B. mori, Drosophila melanogaster and Homo sapiens were performed and the results showed distinct close relationships of BmCalpain-A/B with DmCalpain- A/B, BmCalpain-C with DmCalpain-C, and BmCalpain-7 with HsCalpain-7. Then, the expression profiles of BmCalpains were analyzed by quantitative real-time polymerase chain reaction, and results showed that expression ofBmCalpain-A/B, BmCalpain-C and BmCalpain-7 was significantly increased during B. mori metamorphosis and induced in the fat body and midgut of starved larvae, which is consistent with the expression profiles ofBmAtgS, BmAtg6 and BmCaspase-1. Moreover, the apoptosis-associated cleavage of BmATG6 in Bm-12 cells was significantly enhanced when BmCalpain-A/B and BmCalpain-7 were induced by starvation, and was partially inhibited by the inhibitor of either calpain or caspase, but completely inhibited when both types of inhibitors were applied together. Our results indicated that BmCalpains, including BmCalpain-A/B, -C and -7, may be involved in autophagy and apoptosis during B. mori metamorphosis and after starvation, and may also contribute to the apoptosis-associated cleavage of BmATG6.

关键词： apoptosis autophagy BmATG6 Bombyx mori calpain starvation

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Dose-dependent effects of apple pectin on alleviating high fat-induced obesity modulated by gut microbiota and SCFAs

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food Science and Human Wellness 2022年第1期11卷 143-154页

作者： Yuanyuan Zhao Jinfeng Bi Jianyong Yi Jian Peng Qiancheng Ma institute of food Science and Technology Chinese Academy of Agricultural Sciences(CAAS)Key Laboratory of Agro-Products ProcessingMinistry of Agriculture and Rural AffairsBeijing 100193China sericultural and agri-foodresearch institute Guangdong Academy of Agricultural SciencesGuangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China School of food Science and Technology Dalian Polytechnic UniversityDalian 116034China

Recently,pectin has been used as an alternative for commercial prebiotic products to modulate gut *** this study,the standard diet(Chow group)and high fat diet containing 0%(HF group),1%,3%,5%,8% or 12%(m/m)apple pectin(HF-P group)were offered ad libitum for 8 weeks to 4-week C57BL/6J mice(n=10/group).Results showed that body weight gain(R^(2)=–0.990),subcutaneous adipose accumulation(R^(2)=–0.930),serum triglyceride elevation(R_(2)=–0.879),acetate(R^(2)=0.955)and propionate concentration reduction(R2=0.985)were suppressed by pectin from 1% to 12%,indicating dose response to pectin ***,abundance of obesity-related bacteria Coriobacteriaceae,and pectin-degradating bacteria,Faecalibaculum,Ruminococcus were significantly increased with pectin dosage increased,and the R^(2) were 0.936,0.963 and 0.937,***,attenuations for colonic injury and liver steatosis were observed after adding 5% and 8% pectin,*** study confirmed the dose-sensitive manner of pectin to alleviate HF-induced obesity by modulating gut microbiota and enhancing short-chain fatty acids production.

关键词： Pectin Dosage Obesity Gut microbiota Short-chain fatty acid

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Clathrin-dependent endocytosis predominantly mediates protein absorption by fat body from the hemolymph in Bombyx mori

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Insect Science 2020年第4期27卷 675-686页

作者： Yu-Jie Wang Shu-Yan Li Jia-Ye Zhao Kang Li Jing Xu Xian-Ying Xu Wen-Mei Wu Rong Yang Yang Xiao Ming-Qiang Ye Ji-Ping Liu Yang-Jin Zhong Yang Cao Hui-Yu Yi Ling Tian guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding/guangdong Provincial Sericulture and Mulberry Engineering research Center College of Animal ScienceSouth China Agricultural UniversityGuangzhouChina guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Institute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouChina The sericultural and agri-food research institute of the guangdong academy of agricultural sciences GuangzhouChina

During insect larval-pupal metamorphosis,proteins in the hemolymph are absorbed by the fat body for the maintenance of intracellular homeostasis;however,the type of proteins and how these proteins are internalized into the fat body are *** Bombyx mori,the developmental profiles o f total proteins in the hemolymph and fat body showed that hemolymph-decreased protein bands(55-100 kDa)were in accordance with those protein bands that increased in the fat *** o f clathrin-dependent endocytosis predominantly blocked the transportation o f 55-100 kDa proteins from the hemolymph into the fat body,which was further verified by RNA interference treatment o f *** hexamerins were shown to comprise〜90%of the total identified proteins in both the hemolymph and fat body by mass spectrum(MS)*** addition,hemolymphspecific proteins were mainly involved in material transportation,while fat body-specific proteins particularly participated in *** this paper,four hexamerins were found for the first time,and potential proteins absorbed by the fat body from the hemolymph through clathrin-dependent endocytosis were *** study sheds light on the protein absorption mechanism during insect metamorphosis.

关键词： Bombyx mori clathrin-mediated endocytosis fat body hemolymph uptake of proteins

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