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A comparison study on structure-function relationship of polysaccharides obtained from sea buckthorn berries using different methods:antioxidant and bile acid-binding capacity

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food Science and Human Wellness 2024年第1期13卷 494-505页

作者： Qiaoyun Li Zuman Dou Qingfei Duan Chun Chen Ruihai Liu Yueming Jiang Bao Yang Xiong Fu SCUT-Zhuhai institute of Modern Industrial Innovation School of Food Science and EngineeringSouth China University of Technology381 Wushan RoadGuangzhou 510640China Guangzhou institute of Modern Industrial technology Nansha 511458China Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety Guangzhou 510640China Overseas Expertise Introduction Center for Discipline Innovation of food Nutrition and Human Health(111 Center) Guangzhou 510640China Department of food Science Stocking HallCornell UniversityIthaca 14853USA South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

In this study,the structural characters,antioxidant activities and bile acid-binding ability of sea buckthorn polysaccharides(HRPs)obtained by the commonly used hot water(HRP-W),pressurized hot water(HRP-H),ultrasonic(HRP-U),acid(HRP-C)and alkali(HRP-A)assisted extraction methods were *** results demonstrated that extraction methods had significant effects on extraction yield,monosaccharide composition,molecular weight,particle size,triple-helical structure,and surface morphology of HRPs except for the major linkage *** analysis showed that HRP-U with filamentous reticular microstructure exhibited better thermal *** HRP-A with the lowest molecular weight and highest arabinose content possessed the best antioxidant ***,the rheological analysis indicated that HRPs with higher galacturonic acid content and molecular weight showed higher viscosity and stronger crosslinking network(HRP-C,HRP-W and HRP-U),which exhibited stronger bile acid binding *** present findings provide scientific evidence in the preparation technology of sea buckthorn polysaccharides with good antioxidant and bile acid binding capacity which are related to the structure affected by the extraction methods.

关键词： Sea buckthorn Extraction method Structure Rheological properties Antioxidant activity Bile acid binding capacity

Alternative splicing of the PECTINESTERASE gene encoding a cell wall-degrading enzyme affects postharvest softening in grape

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Journal of Integrative Agriculture 2024年第3期23卷 863-875页

作者： Hainan Liu Maosong Pei Charles Ampomah-Dwamena Yaxin Shang Yihe Yu Tonglu Wei Qiaofang Shi Dalong Guo College of Horticulture and Plant Protection Henan University of Science and TechnologyLuoyang 471000China Henan Engineering technology Research Center of Quality Regulation and Control of Horticultural Plants Luoyang 471000China The New Zealand institute for Plant&food Research Limited(PFR) Auckland 1010New Zealand

The firmness of table grape berries is a crucial quality parameter. Despite extensive research on postharvest fruit softening, its precise molecular mechanisms remain elusive. To enhance our comprehension of the underlying molecular factors, we initially identified differentially expressed genes(DEGs) by comparing the transcriptomes of folic acid(FA)-treated and water-treated(CK) berries at different time points. We then analyzed the sequences to detect alternatively spliced(AS) genes associated with postharvest softening. A total of 2,559 DEGs were identified and categorized into four subclusters based on their expression patterns, with subcluster-4 genes exhibiting higher expression in the CK group compared with the FA treatment group. There were 1,045 AS-associated genes specific to FA-treated berries and 1,042 in the CK-treated berries, respectively. Gene Ontology(GO) annotation indicated that the AS-associated genes in CK-treated berries were predominantly enriched in cell wall metabolic processes,particularly cell wall degradation processes. Through a comparison between treatment-associated AS genes and subcluster-4 DEGs, we identified eight genes, including Pectinesterase 2(VvPE2, Vitvi15g00704), which encodes a cell wall-degrading enzyme and was predicted to undergo an A3SS event. The reverse transcription polymerase chain reaction further confirmed the presence of a truncated transcript variant of VvPE2 in the FA-treated *** study provides a comprehensive analysis of AS events in postharvest grape berries using transcriptome sequencing and underscores the pivotal role of VvPE2 during the postharvest storage of grape berries.

关键词： grape postharvest softening folic acid alternative splicing Pectinesterase 2 alternative 3'splice site(A3SS)

Utilization of pH-driven methods to fortify nanoemulsions with multiple polyphenols

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food Science and Human Wellness 2024年第4期13卷 1943-1950页

作者： Hualu Zhou Bingjing Zheng David Julian McClements Department of food Science and technology College of Agricultural and Environmental SciencesUniversity of GeorgiaGriffinGA 30223USA Biopolymers and Colloids Laboratory Department of Food ScienceUniversity of MassachusettsAmherstMA 01003USA Department of food Science&Bioengineering Zhejiang Gongshang UniversityHangzhou 310018China

Simple but effective methods are required to incorporate multiple bioactive polyphenols into delivery systems to increase their dispersibility,stability and *** developed and tested three p Hdriven protocols for creating nanoemulsions loaded with multiple lipophilic *** protocols differed in how the different polyphenols were incorporated into the *** impact of these three methods on the formation,properties,and gastrointestinal fate of nanoemulsions loaded with curcumin,resveratrol,and quercetin was *** three methods produced nanoemulsions with similar initial particle properties:droplet diameters(0.15,0.16,and 0.15μm)and zeta-potentials(–59,–58,and–58 m V),***,the average encapsulation efficiencies(82%,88%,and 61%),gastrointestinal stabilities(83%,97%,and 29%)and bioaccessibilities(77%,90%,and 73%)for curcumin,resveratrol,and quercetin were somewhat *** particular,more quercetin degradation occurred using the approach that held it under alkaline conditions for extended *** general,the p H-driven method provides researchers with a versatile approach of incorporating multiple polyphenols with different characteristics into functional food and beverages using a simple and inexpensive method.

关键词： Polyphenols pH-Driven encapsulation Nanoemulsions Gastrointestinal fate Functional foods

A core-satellite self-assembled SERS aptasensor containing a“biological-silent region”Raman tag for the accurate and ultrasensitive detection of histamine

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food Science and Human Wellness 2024年第2期13卷 1029-1039页

作者： Chen Chen Yingfang Zhang Ximo Wang Xuguang Qiao Geoffrey I.N.Waterhouse Zhixiang Xu Key Laboratory of food Processing technology and Quality Control in Shandong Province College of Food Science and EngineeringShandong Agricultural UniversityTai’an 271018China School of Chemical Sciences The University of AucklandAuckland 1142New Zealand

Herein,a novel interference-free surface-enhanced Raman spectroscopy(SERS)strategy based on magnetic nanoparticles(MNPs)and aptamer-driven assemblies was proposed for the ultrasensitive detection of histamine.A core-satellite SERS aptasensor was constructed by combining aptamer-decorated Fe_(3)O_(4)@Au MNPs(as the recognize probe for histamine)and complementary DNA-modified silver nanoparticles carrying 4-mercaptobenzonitrile(4-MBN)(Ag@4-MBN@Ag-c-DNA)as the SERS signal probe for the indirect detection of *** an applied magnetic field in the absence of histamine,the assembly gave an intense Raman signal at“Raman biological-silent”region due to *** the presence of histamine,the Ag@4-MBN@Ag-c-DNA SERS-tag was released from the Fe_(3)O_(4)@Au MNPs,thus decreasing the SERS *** optimal conditions,an ultra-low limit of detection of 0.65×10^(-3)ng/mL and a linear range 10^(-2)-10^5 ng/mL on the SERS aptasensor were *** histamine content in four food samples were analyzed using the SERS aptasensor,with the results consistent with those determined by high performance liquid *** present work highlights the merits of indirect strategies for the ultrasensitive and highly selective SERS detection of small biological molecules in complex matrices.

关键词： Surface-enhanced Raman spectroscopy Raman biological-silent region Aptamer Histamine detection Universal SERS-tag

Exploiting neonatal host–bifidobacteria interactions to promote intestinal pathogen tolerance and barrier function: Bifidobacteriumlongum subsp. infantis outperforms Bifidobacteriumadolescentis in anti-Salmonella activity and maintenance of intestinal hom

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food Science and Human Wellness 2024年

作者： Chunxiu Lin Shunhe Wang Min Guo Wentian Li Jiayin Qiu Yonghua Zhou Hao Zhang Wei Chen Gang Wang Key Laboratory of National Health Commission on Parasitic Disease Control and Prevention， Jiangsu Provincial Key Laboratory on Parasite and Vector Control technology， Jiangsu institute of Parasitic Diseases State Key Laboratory of food Science andResources， Jiangnan University Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research institute Wuxi Branch (Yangzhou) institute of food Biotechnology， Jiangnan University National Engineering Research Center for Functional food， Jiangnan University School of food Science and technology， Jiangnan University

Bifidobacteriumlongumsubsp. infantis (***. infantis) and Bifidobacteriumadolescentis(B. adolescentis) play important roles in the guts of infants and adolescents， respectively. In this study， using a neonatal rat model， we compared the protective effects of these two bifidobacterial species against Salmonella infection. The results demonstrated that ***. infantis was more effective than B. adolescentis in alleviating the severity of infection in newborn rats exposed to Salmonella entericaserovarTyphimurium strain SL1344. B. *** attenuated intestinal inflammation and mucosal damage induced by Salmonella infection， as well as protecting intestinal nerves and intestinal barrier function through TLR4/MyD88 signalling. B. longumsubsp. infantis also displayed the potential to modulate gut metabolites by promoting the biosynthesis of unsaturated fatty acids (arachidonic acid， eicosapentaenoic acid and α-linolenic acid) and purine metabolism (guanine， adenine， inosine and adenosine)， thereby regulating metabolic disturbances. Additionally， the benefits of B. *** were also observed in the liver， spleen and brain， improving nerve reflexes and suppressing hepatosplenomegaly. Overall， these findings provide novel insights into the prevention and treatment of gut-related diseases in newborns， highlighting the potentially significant role of B. *** in clinical applications.

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Bifidobacterium adolescentis CCFM8630 Exerts Anti-Obesity Effects by Modulating Gut Microbiota-Related Tryptophan Metabolism

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food Science and Human Wellness 2024年

作者： Bo Zhang Linlin Wang Peijun Tian Xing Jin Ming Liang Zehua Chen Jianxin Zhao Hao Zhang Gang Wang State Key Laboratory of food Science and Resources， Jiangnan University School of food Science and technology， Jiangnan University National Engineering Research Center for Functional food， Jiangnan University (Yangzhou) institute of food Biotechnology， Jiangnan University Infinitus (China) Company Ltd. Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research institute Wuxi Branch

Obesity is a major focus of researchers due to its increasing prevalence and relationship with other diseases， such as cancer and cardiovascular diseases. Probiotics are active microorganisms and have been proven to alleviate obesity by modulating the microbiota. In this study， we found that oral administration of Bifidobacterium adolescentis CCFM8630 to obese mice inhibited high-fat-diet (HFD)-induced changes in body weight and adipose tissue and alleviated hepatic oxidative stress. Furthermore， B. adolescentis CCFM8630 treatment primarily affected the relative abundances of the phyla Proteobacteria and Actinobacteria， and thereby decreased the production of lipopolysaccharide (LPS) and the occurrence of LPS-related diseases. A high fiber intake increased the abundance of Lactobacillus and the concentrations of short-chain fatty acids in obese mice， but these changes were reversed by B. adolescentis CCFM8630 treatment. In addition， targeted metabolomic analysis and microbiota relationship analysis revealed that B. adolescentis CCFM8630 treatment modified the microbiota of obese mice by promoting the conversion of tryptophan (Trp) to xanthurenic acid， kynurenic acid， tryptamine， indole-3-acetic acid， and indole-3-carboxaldehyde; facilitated the expression of interleukin-17A and the aryl hydrocarbon receptor to generate interleukin-22 in the colon; and upregulated the expression of tight junction proteins， thereby strengthening intestinal barriers. In summary， our findings suggest that the intake of B. adolescentis CCFM8630 may alleviate obesity by modulating the gut microbiota and related Trp metabolism.

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OsWRKY65 enhances immunity against fungal and bacterial pathogens in rice

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The Crop Journal 2024年第2期12卷 470-481页

作者： Seungmin Son Giha Song Suhyeon Nam Jinjeong Lee Duk-Ju Hwang Eun-Jung Suh Sang Ryeol Park National institute of Agricultural Sciences Rural Development AdministrationJeonju 54874Republic of Korea Department of Agriculture Forestry and BioresourcesPlant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Department of Crop Science and Biotechnology Jeonbuk National UniversityJeonju 54896Republic of Korea

Diverse bacterial and fungal pathogens attack plants,causing biotic stress and severe yield losses *** losses are expected to become more serious as climate change improves conditions for many ***,identifying genes conferring broad-spectrum disease resistance and elucidating their underlying mechanisms provides important resources for plant *** transcription factors affect plant growth and stress ***,the functions of many WRKY proteins remain to be ***,we demonstrated the role of rice(Oryza sativa)WRKY groupⅢtranscription factor OsWRKY65 in ***65 localized to the nucleus and acted as transcriptional *** and molecular functional analyses showed that OsWRKY65 increases resistance to the fungal pathogen Fusarium fujikuroi through downregulation of GA signaling and upregulation of JA ***,OsWRKY65 modulated the expression of the key genes that confer susceptibility or resistance to Xanthomonas oryzae *** to enhance immunity against the *** particular,OsWRKY65directly bound to the promoter region of OsSWEET13 and repressed its *** together,our findings demonstrate that the OsWRKY65 enhances resistance to fungal and bacterial pathogens in rice.

关键词： Bacterial blight Bakanae disease Broad-spectrum disease resistance Oriza sativa OsWRKY65 Rice

TRIM21-dependent ultrasmall chiral gold nanoparticles for preventing microglia senescence against Alzheimer's disease

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Science China Chemistry 2024年第4期67卷 1360-1372页

作者： Meiru Lu Changlong Hao Liguang Xu Feng Yu Jiwei Jiang Yanli Wang Jun Xu Hua Kuang Chuanlai Xu Maozhong Sun International Joint Research Laboratory for Biointerface and Biodetection State Key Laboratory of Food Science and ResourcesSchool of Food Science and TechnologyJiangnan UniversityWuxi 214122China institute of Life Sciences Jiangsu UniversityZhenjiang 212013China Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijing 100050China National Clinical Research Center for Neurological Diseases Beijing 100070China

Tripartite motif 21(TRIM21)is an E3 ubiquitin ligase that shows great promise for protein degradation through ***,ultrasmall chiral gold nanoparticles(D-or L-NPs)modified by D-or L-glutathione ligands were *** conjugated with an NLR family pyrin domain-containing protein 3(NLRP3)antibody(D-NP-a NLRP3 or L-NP-a NLRP3),DNP-a NLRP3 showed effective delivery efficiency of the antibody into microglia and prevented Aβ-mediated microglia senescence,and p16^(ink4a),a marker of senescence,in the microglia was reduced by 90.3%±7.8% while L-NP-a NLRP3 decreased by 48.01%±3.1%.Mechanistic investigations revealed that the D-NP-a NLRP3((1.5±0.3)×10^(7)M^(-1))exhibited sixteen-fold larger binding affinity to transmembrane glycoprotein SLC3A2 than L-type((9.5±2.7)×10^(5)M^(-1)),which led to a high efficiency of antibody delivery and TRIM21-dependent NLRP3 ***,the blood-brain barrier(BBB)-crossing ability of chiral NP-a NLRP3 as well as NLRP3 degradation was demonstrated in *** APP/PS1 Alzheimer's disease(AD)model mice experiments exhibited a reduction of 89.7%±6.8% for the NLRP3 protein and 84.2±7.5% for p16^(ink4a)following the intravenous administration of D-NP-a NLRP3 once a week for 60 ***,the levels of the AD markers Aβ and phosphorylatedTau in the brains were reduced by 86.2%±8.2% and 81.6%±9.1%;these were 2.1-fold and 1.9-fold higher than those treated with L-NP-a NLRP3,*** studies provide a method to rescue AD-like pathologies and prevent senescence.

关键词： chiral gold nanoparticles amyloid-β NLRP3 TRIM21 senescence Alzheimer's disease

Iron regulatory protein 1: the deadly switch of ferroptosis

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Neural Regeneration Research 2024年第3期19卷 477-478页

作者： Daniel A.Bórquez Pamela J.Urrutia Center for Biomedical Research Faculty of MedicineUniversidad Diego PortalesSantiagoChile institute of Nutrition&food technology(INTA) Universidad de ChileSantiagoChile Geroscience Center for Brain Health and Metabolism SantiagoChile

Ferroptosis,an iron-dependent cell death:Ferroptosis is a type of regulated necrosis,characterized by redox-active iron accumulation and increased free radical production derived by Fenton chemistry,that triggers oxidation of polyunsaturated fatty acids in phospholipids,loss of cellular membranes integrity,and leakage of intracellular contents.

关键词： integrity switch Iron