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Non‑Leaching,Rapid Bactericidal and Biocompatible Polyester Fabrics Finished with Benzophenone Terminated N‑halamine

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Advanced Fiber Materials 2022年第1期4卷 119-128页

作者： Shu Wang JianNa Li Yihong Cao JingWei Gu YuanFeng Wang shiguo chen Nanshan District Key Lab for Biopolymers and Safety Evaluation Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Department of Pathogen Biology School of Basic Medical SciencesShenzhen University Health Sciences CenterShenzhen 518060People’s Republic of China

Pathogenic bacteria can proliferate rapidly on porous fabrics to form bacterial plaques/bioflms,resulting in potential sources of cross-transmissions of diseases and increasing cross-infection in public *** works on antibacterial modifcation of cotton fabrics have been reported,while very few works were reported to endow poly(ethylene terephthalate)(PET)fabrics with non-leaching antibacterial function without compromising their innate physicochemical properties though PET is the most widely used ***,it is urgent to impart the PET fabrics with non-leaching antibacterial ***,a novel N-halamine compound,1-chloro-3-benzophenone-5,5-dimethylhydantoin(Cl-BPDMH),was developed to be covalently bonded onto PET fabrics,rendering non-leaching antibacterial activity while negligible cytotoxicity based on contact-killing *** was easily adhered to Cl-BPDMH fnished PET fabrics,and then it was inactivated quickly within 10 ***,the breaking strength,breaking elongation,tearing strength,water vapor permeability,air permeability and whiteness of Cl-BPDMH fnished PET fabrics were improved obviously compared to raw PET ***,this work developed a facile approach to fabricate multifunctional synthetic textiles to render outstanding and rapid bactericidal activity without compromising their physicochemical properties and biocompatibility.

关键词： Poly(ethylene terephthalate) Fabric Bactericidal N-halamine Photochemical reaction

Identification of carbohydrate in Polygonatum sibiricum:fructo-oligosaccharide was a major component

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Food Quality and Safety 2023年第3期7卷 439-446页

作者： Jiabei Xia Cenrong Zhang Kai Zhu Xingyu Mei Huan cheng shiguo chen Xingqian Ye Jianle chen Ningbo Innovation Center Zhejiang UniversityNingboChina College of Biosystems Engineering and Food Science National–Local Joint Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agri-Food ProcessingFuli Institute of Food ScienceZhejiang Engineering Laboratory of Food Technology and EquipmentZhejiang UniversityHangzhouChina Zhejiang University Zhongyuan Institute ZhengzhouChina School of Biological and Chemical Engineering NingboTech UniversityNingboChina

Polygonatum sibiricum,famous for its physiological activities,is a popular Chinese food and a traditional Chinese herb containing many carbohydrates as the main ***,except for most reported polysaccharides,other detailed compositions of carbohydrates are still not *** verify the controversial existence of starch and investigate other components,especially oligosaccharides,we used iodine–potassium iodide colorimetric detection and enzymatic hydrolysis to determine ***,oligosaccharides were analyzed by thin-layer chromatography,gel permeation chromatography,high-performance anion exchange chromatography with pulsed amperometric detection,and hydrophilic interaction chromatography–electrospray tandem mass *** results showed that the rhizome of *** lacked starch,and fructooligosaccharides were the main component,accounting for approximately 28.95%.Oligosaccharides with degrees of polymerization above 10 were the most abundant *** study clearly illustrated the unknown carbohydrate components of the Polygonatum rhizome,promoting its functional value with new evidence.

关键词： Polygonatum sibiricum starch determination fructo-oligosaccharides HPAEC-PAD HILIC-ESI-MS/MS

Optimization of high-pressure processing-assisted extraction of pectic polysaccharides from three berries

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Food Quality and Safety 2023年第1期7卷 1-12页

作者： Xinxin Hu chengxiao Yu Shokouh Ahmadi Yuying Wang Xingqian Ye Zhiqiang Hou shiguo chen College of Biosystems Engineering and Food Science National-Local Joint Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro-Food ProcessingZhejiang Engineering Laboratory of Food Technology and EquipmentZhejiang UniversityHangzhouChina Zhejiang University Zhongyuan Institute ZhengzhouChina Shandong(Linyi)Institute of Modern Agriculture Zhejiang UniversityLinyiChina Fuli Institute of Food Science Zhejiang UniversityHangzhouChina Ningbo Research Institute Zhejiang UniversityHangzhouChina

Background and objectives:High-pressure processing(HPP)is a promising assistive method to extract pectic polysaccharides with high rhamnogalacturonan I(RG-I)domain and berries are sources of such pectic *** study extracts pectic polysaccharides from goji berry,raspberry,and cranberry,examines how HPP influences the pectic polysaccharide structure of three berries,and provides a basis for the extraction and modification of pectic polysaccharides with specific structure and *** and methods:An orthogonal test was performed to optimize the HPP-assisted alkali method to extract the high yield and high RG-I content pectic polysaccharides from three *** information of pectic polysaccharides extracted by the HPP method and conventional methods were compared from the perspectives of monosaccharide composition,molecular weight,Fourier transform infrared spectroscopy,***:For raspberry,the optimal conditions consisted of a pressure of 50o MPa,a pH of 13,and a pressure-holding time of 12 min,while the optimal conditions for goji berry and cranberry were both 40o MPa,pH 13,and 15 *** the optimal conditions,the yields for goji berry,raspberry,and cranberry were 10.49%,16.63%,and 17.52%,respectively,and RG-l contents were 81.85%,83.30%,and 63.22%,*** showed an effect to degrade homogalacturonan backbones and side chains and increase the RG-I content to some ***:HPP-assisted alkali method was revealed to be an efficient method to extract high RG-I content pectic polysaccharides,especially for cranberry,and was a potential method to modify pectic polysaccharide structure in a certain way.

关键词： Pectic polysaccharide High-pressure processing Rhamnogalacturonan-I Structural characteristics

A rapid method for extraction,purification and structure analysis of chondroitin sulfate from six marine tissues

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Food Quality and Safety 2023年第1期7卷 20-29页

作者： Yuying Wang Shokouh Ahmadi chengxiao Yu Laiming Zhang Xinxin Hu Xingqian Ye shiguo chen College of Biosystems Engineering and Food Science National-Local Joint Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro-Food ProcessingZhejiang Engineering Laboratory of Food Technology and EquipmentZhejiang UniversityHangzhouChina Zhejiang University Zhongyuan Institute ZhengzhouChina Shandong(Linyi)Institute of Modern Agriculture Zhejiang UniversityLinliChina Fuli Institute of Food Science Zhejiang UniversityHangzhouChina Ningbo Research Institute Zhejiang UniversityHangzhouChina

This study was designed to establish a strategy for the extraction,purification,and structure analysis of chondroitin sulfate(cs)in milligram *** acidic polysaccharides were extracted from six kinds of marine animals by enzymatic hydrolysis and hexadecylpyridinium chloride precipitation and purified by Q Sepharose Fast Flow strong anion exchange *** purification of each crude polysaccharide was completed within 1 *** structure of the polysaccharides,*** chemical characterization,functional group,molecular weight and monosaccharide composition,were analyzed by colorimetry,nuclear magnetic resonace and high-performance liquid chromatogrpahy,*** polysaccharides were identified as *** oligosaccharide profile produced by enzyme hydrolysis of polysaccharides was determined by strong anion-exchange high-performance liquid *** method can be widely applied to the extraction and characterization of chondroitin sulfate from unknown raw materials,screening high-quality sources of functional polysaccharides,and laying a good foundation for thefollowing studyof the structure-function relationshipof polysaccharides.

关键词： Chondroitin sulfate marinepolysaccharide disaccharide analysis

Monodisperse micro-spherical Sr_(2-z)Mg_(1+y)Y_(z)Al_(22-x)O_(36):xMn^(4+)red phosphors

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Journal of Rare Earths 2022年第4期40卷 526-533,I0001页

作者： Jiannan Jia Mengting He Jun Wan Yuting Zhang Hai Guo Xianping Fan Xusheng Qiao shiguo chen Department of Physics Zhejiang Normal UniversityJinhua 321004China State Key Laboratory of Silicon Materials&School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and EngineeringShenzhen UniversityShenzhen 518055China

With narrow red photoluminescence (PL) bands, tetravalent Mn^(4+) doped phosphors show promising prospect in commercial application to effectively expand color gamut of phosphor converted LED displays. Here, we report a type of Sr_(2-z)Mg_(1+y)Y_(z)Al_(22-x)O_(36):xMn^(4+) phosphors with regular cage-like micro-spherical morphologies. The micron size spherical precursors were synthesized with a propylene oxide (PO) driven fast sol–gel method. The cage -like spherical morphology is beneficial to efficiently trapping much incident light to enhance the PL of the phosphors. Being calcined at 1300 ℃, Sr_(2)MgAl_(21.978)O_(36):0.022Mn^(4+) only exhibits the internal quantum efficiency (IQE) of 24.91%. With the Mg^(2+)-Mn^(4+) codoping and Y^(3+)/Sr^(2+) substituting strategies, to fulfill charge balance and produce John-Teller distortion, IQE of Sr_(2-z)Mg_(1+y)Y_(z)Al_(22-x)O_(36):xMn^(4+) can be further improved up to 36.45%. The CIE color coordinates of Sr_(2-z)Mg_(1+y)Y_(z)Al_(22-x)O_(36):xMn^(4+) under near ultraviolet excitation can be stably fixed to (0.723, 0.227) at deep red region. It thus finds a potential application as pc-LED display with much broader color gamut than that of the NTSC standard. Therefore, Sr_(2-z)Mg_(1+y)Y_(z)Al_(22-x)O_(36):xMn^(4+) micron size spheres can be employed as promising red phosphors for high performance LED displays.

关键词： Mn^(4+) Sr_(2-z)Mg_(1+y)Y_(z)Al_(22-x)O_(36) LED phosphor Cage-like micro-sphere Luminescence Rare earths

Chemical diversity of scleractinian corals revealed by untargeted metabolomics and molecular networking

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Acta Oceanologica Sinica 2023年第11期42卷 127-135页

作者： Jiying Pei Yuxia Zhou shiguo chen Kefu Yu Zhenjun Qin Ruijie Zhang Yitong Wang Coral Reef Research Center of China Guangxi Laboratory on the Study of Coral Reefs in the South China SeaSchool of Marine SciencesGuangxi UniversityNanning 530000China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519080China

The chemical diversity of scleractinian corals is closely related to their physiological,ecological,and evolutionary status,and can be influenced by both genetic background and environmental *** investigate intraspecific variation in the metabolites of these corals,the metabolomes of four species(Pocillopora meandrina,Seriatopora hystrix,Acropora formosa,and Fungia fungites)from the South China Sea were analyzed using untargeted mass spectrometry-based *** results showed that a variety of metabolites,including amino acids,peptides,lipids,and other small molecules,were differentially distributed among the four species,leading to their significant separation in principal component analysis and hierarchical clustering *** higher content of storage lipids in branching corals(***,***,and ***)compared to the solitary coral(***)may be due to the high densities of zooxanthellae in their *** high content of aromatic amino acids in *** may help the coral protect against ultraviolet damage and promote growth in shallow seawater,while nitrogen-rich compounds may enable *** to survive in various challenging *** metabolites enriched in ***,including amino acids,dipeptides,phospholipids,and other small molecules,may be related to the composition of the coral's mucus and its life-history,such as its ability to move freely and live *** the chemical diversity of scleractinian corals not only provides insight into their environmental adaptation,but also holds potential for the chemotaxonomy of corals and the discovery of novel bioactive natural products.

关键词： scleractinian coral chemical diversity metabolomics molecular networking environmental adaptation

Effects of fermentation conditions on physicochemical properties and flavor quality of fermented bayberry juice

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Food Quality and Safety 2022年第2期6卷 330-340页

作者： Ying chen Feifei Liu Jin chen Jianle chen shiguo chen Dan Wu Xingqian Ye Huan cheng Collge of Biosystems Engineering and Food Science National-Local Joint Engineering Laboratory of Itelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro-Food ProcessingIntegrated Research Base of Southern Fruit and Vegetable Preservation TechnologyZhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality ControlFuli Institute of Food ScienceZhejiang UniversityHangzhouChina Zhejiang University Zhongyuan Institute ZhengzhouChina Shandong(Linyi)Institute of Modern Agriculture Zhejiang UniversityLinyiChina Ningbo Research Institute Zhejiang UniversityNingboChina

Probiotic fermented fruit juice could improve intestinal health with better sensory *** effects of fermentation conditions on flavor quality of fermented bayberry juice were compared through microbial viability and sensory *** by combined Streptococcus thermophilus(ST)and Lactobaillus acidophilus(L A)resulted in higher microbial viability and sensory evaluation *** fermentation con-ditions were optimized by orthogonal experimental design and Technique for Order Preference by Similarity to an Ildeal Solution analysis(ST and LA in a mass ratio of 3:1;0.6%(mass concentration)inoculation;fermentation time,48 h,at 37℃;10%(mass concentration)added sucrose).Fermentation under these conditions decreased the anthocyanin content of the juice,maintained the total phenolic content,and slightly de-creased the antioxidant *** reduced aroma volatiles from 42 in fresh juice to 33,as determined by gas chromatography-mass spectrometry-olfactometry(GC-MS-O),the aldehyde content decreased and the alcohol content *** acid fermented bayberry juice by ST and LA produced a beverage with desirable consumer attributes,combining the health benefits of fresh juice and probiotics.

关键词： Bayberry juice fermentation lactic acid bacteria combined probiotics aroma

Identification of Fucans from Four Species of Sea Cucumber by High Temperature ~1H NMR

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Journal of Ocean University of China 2014年第5期13卷 871-876页

作者： WU Nian chen shiguo YE Xingqian LI Guoyun YIN Li'ang XUE Changhu College of Biosystem Engineering and Food Science Zhejiang University College of Food Science and Engineering Ocean University of China

Acidic polysaccharide, which has various biological activities, is one of the most important components of sea cucumber. In the present study, crude polysaccharide was extracted from four species of sea cucumber from three different geographical zones, Pearsonothuria graeffei(Pg) from Indo-Pacific, Holothuria vagabunda(Hv) from Norwegian Coast, Stichopus tremulu(St) from Western Indian Ocean, and Isostichopus badionotu(Ib) from Western Atlantic. The polysaccharide extract was separated and purified with a cellulose DEAE anion-exchange column to obtain corresponding sea cucumber fucans(SC-Fucs). The chemical property of these SC-Fucs, including molecular weight, monosaccharide composition and sulfate content, was determined. Their structure was compared simply with fourier infrared spectrum analyzer and identified with high temperature 1H nuclear magnetic resonance spectrum analyzer(NMR) and room temperature 13 C NMR. The results indicated that Fuc-Pg obtained from the torrid zone mainly contained 2,4-O-disulfated and non-sulfated fucose residue, whereas Fuc-Ib from the temperate zone contained non-, 2-O- and 2,4-O-disulfated fucose residue; Fuc-St from the frigid zone and Fuc-Hv from the torrid zone contained mainly non-sulfated fucose residue. The proton of SC-Fucs was better resolved via high temperature 1H NMR than via room temperature 1H NMR. The fingerprint of sea cucumber in different sea regions was established based on the index of anomer hydrogen signal in SC-Fucs. Further work will help to understand whether there exists a close relationship between the geographical area of sea cucumber and the sulfation pattern of SC-Fucs.

关键词： sea cucumber sulfated fucan composition analysis 1H NMR identification

Multiple action sites of ultrasound on Escherichia coli and Staphylococcus aureus

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Food Science and Human Wellness 2018年第1期7卷 102-109页

作者： Xinyu Liao Jiao Li Yuanjie Suo shiguo chen Xingqian Ye Donghong Liu Tian Ding Department of Food Science and Nutrition National Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang UniversityHangzhouZhejiang 310058China Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture Zhejiang Key Laboratory for Agro-Food ProcessingHangzhouZhejiang 310058China Fuli Institute of Food Science Zhejiang UniversityHangzhou 310058China

Ultrasound,is thought to a potential non-thermal sterilization technology in food ***,the exact mechanisms underlying microbial inactivation by ultrasound still remain *** this study,the action modes of ultrasound on both Gram-negative and Gram-positive microorganisms were *** colony results,ultrasound acted as an irreversible effect on both Eshcerichia coli and Staphylococcus aureus without sublethal *** result in this study also showed that a proportion of bacteria subpopulation suffered from serious damage of intracellular components(*** and enzymes)but with intact cell *** speculated that the inactivated effects of ultrasound on microbes might more than simply completed disruption of cell *** microbial cells who had not enter the valid area of ultrasonic cavitation might be injected with free radicals produced by ultrasound and experienced interior injury with intact exterior structure,and others who were in close proximity to the ultrasonic wave field would be immediately and completely disrupted into debris by high power mechanic *** findings here try to provide extension for the inactivation mechanisms of ultrasound on microorganisms.

关键词： Ultrasound Inactivation mechanism Reactive oxygen species(ROS) Staphylococcus aureus Escherichia coli