检索结果-南通市图书馆

Biotransformation and pharmacological activities of platycosides from Platycodon grandiflorum roots

在线全文

学校读者我要写书评

暂无评论

chinese Herbal Medicines 2024年第3期16卷 392-400页

作者： lin shi Tong Cui Xinyue wang Rina Wu Junrui Wu Yanqun wang Weiming wang College of Food science Shenyang Agricultural UniversityShenyang 110866China institute of chinese Materia Medica Heilongjiang Academy of Chinese Medicine SciencesHarbin 150036China

In Northeast China,Goubao pickle is a popular food fermented from the roots of Platycodon grandiflorum as the main material,offering a unique flavor and rich nutritional *** in roots of *** may play a crucial role in determining the quality of Goubao pickle through microorganism ***,biotransfermation of platycosides has not been reviewed during *** this study,we reviewed platycosides in chemical diversity,metabolic processes in vivo,biotransformation of platycosides in vitro,and pharmacological ***,we also discussed how to improve the bioactive secondary platycosides we desire by regulating enzymes from microorganisms in the future.

关键词： biotransformation Goubao pickle microorganisms pharmacological activities platycosides Platycodon grandiflorum(Jacq.)A.DC

Difference in Selenium Accumulation in Shoots of Two Rice Cultivars

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2006年第5期16卷 646-653页

作者： ZHANG Lian-He shi Wei-Ming wang Xiao-Chang State Key Laboratory of soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of SciencesNanjing 210008 （China） Agricultural College Henan University of Science and Technology Luoyang 471003 （China） Department of Tea science Zhejiang University Hangzhou 310029 （China）

Two japonica rice （Oryza sativa L.） cultivars, Xiushui 48 and S. Andrea, differing in their ability to accumulate Se in the grain （as high as a three-fold difference）, were compared for selenium （Se） accumulation in their shoots when their growth media was supplied with different forms of Se. Results indicated that when treated with 0.25μmol L^-1 Na2SeO3, Xiushui 48 accumulation of Se in the shoots was significantly more rapid （P〈0.05） than S. Andrea, probably because of greater Se uptake and transport in Xiushui 48. Xiushui 48 rice seedlings had a higher shoot-Se accumulation rate and absorbed selenocysteine （Se-Cys） more rapidly than S. Andrea seedlings. However, when treated with Se as 0.25μmol L^-1 selenomethionine （Se-Met）, the S. Andrea seedlings＇ accumulation rate was significantly greater （P〈0.05） than that of Xiushui 48. Possibly, the high Se accumulation rate of Xiushui 48 seedling shoots compared to S. Andrea shoots was the result of a higher capacity of Xiushui 48 to transform selenite to organic Se compounds and a higher selenite uptake rate.

关键词： rice cultivars Se accumulation selenite transport uptake rate

Effect of Arbuscular Mycorrhizal Inoculation on Plant Growth and Phthalic Ester Degradation in Two Contaminated soils

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2005年第2期15卷 263-269页

作者： CHENRui-Rui YINRui linXian-Gui CAOZhi-Hong instituteofsoilscience ChineseAcademyofSciencesNanjing210008（China）

A 60-day pot experiment was carried out using di-(2-ethylhexyl) phthalate (DEHP) as a typical organic pollutant phthalic ester and cowpea (Vigna sinensis) as the host plant to determine the effect of arbuscular mycorrhizal inoculation on plant growth and degradation of DEHP in two contaminated soils, a yellow-brown soil and a red soil. The air-dried soils were uniformly sprayed with different concentrations of DEHP, inoculated or left uninoculated with an arbuscular mycorrhizal (AM) fungus, and planted with…

关键词： arbuscular mycorrhizae phthalic ester degradation plant growth soil pollution

Transcriptome and morphological analyses of double flower formation in Dianthus chinensis

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2024年第1期10卷 181-193页

作者： Xiaoni Zhang Shengnan lin Quanshu Wu Qijian wang Chunmei shi Manzhu Bao Mohammed Bendahmane Xiaopeng Fu Zhiqiang Wu Guangdong Laboratory for lingnan Modern Agriculture Genome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong 518120China Key Laboratory of Horticultural Plant Biology College of Horticulture and Forestry SciencesHuazhong Agricultural UniversityWuhanHubei 430070China Laboratoire Reproduction et Development des Plantes INRA-CNRS-Lyon1-ENSEcole Normale Superieure de LyonLyon 520074France

The double flower developmental process is regulated via a complex transcriptional regulatory *** understand this highly dynamic and complex developmental process of Dianthus spp.,we performed a comparative analysis of floral morphology and transcriptome dynamics in simple flowers and double *** found that the primordium of double flowers of‘X’was larger in size compared to that of simple flowers of‘L’in Dianthus ***-seq and Weighted Gene Co-expression Network Analysis(WGCNA)during flower development,identified stage-specific gene network *** analysis by RNA-seq indicated that a group of genes related to floral meristem identity,primordia position and polarity were highly expressed in double flowers genotypes compared to simple flowers genotypes,suggesting their roles in double-petal formation.A total of 21 DEGs related to petal number were identified between simple and double *** experiments of in situ hybridization revealed that DcaAP2L,DcaLFY and DcaUFO genes were expressed in the intra-sepal boundary and petal *** proposed a potential transcriptional regulatory network for simple and double flower *** study provides novel insights into the molecular mechanism underlying double flower formation in Dianthus spp.

关键词： Dianthus spp. Petal boundary Floral morphology Double flower Co-expression network

Quantifying the contribution of activity patterns to PM_(2.5)exposure inequity between urban and rural residents by a novel method

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2024年第8期17卷 1323-1333页

作者： Wei Du Zhanpeng Cui Jinze wang Yuqiong wang Yungui Li Xiaoan Li Yan Zhou Tao Jiang Kang Mao Xianbiao lin Jianwu shi Dengzhou Gao Yiming Qin Yunnan Provincial Key Laboratory of soil Carbon Sequestration and Pollution Control Faculty of Environmental Science&EngineeringKunming University of Science&TechnologyKunming 650500China Laboratory of Earth Surface Processes College of Urban and Environmental SciencesPeking UniversityBeijing 100871China Department of Environmental Engineering Southwest University of Science and TechnologyMianyang 621010China NHC Key Laboratory of Nuclear Technology Medical Transformation Mianyang Central HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaMianyang 621000China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of ChinaQingdao266100China Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education School of Geographical SciencesFujian NormalUniversityFuzhou350117China School of Energy and Environment City University of Hong KongHong KongChina

PM_(2.5)pollution variations in different microenvironments would result in PM_(2.5)exposure inequity between rural and urban *** this study,the real-time PM_(2.5)exposure of urban and rural residents in China was examined based on portable PM_(2.5)sensors together with activity patterns derived from questionnaire surveys,with a focus on students and senior citizens who are sensitive to air *** results showed that PM_(2.5)exposure varied significantly among different resident groups,with higher PM_(2.5)exposure of rural residents than those of urban ***_(2.5)exposure peaks mostly occurred during(Accompanied)cooking activities owing to strong *** and resting were the main activities that affected PM_(2.5)exposures of different resident groups,accounting for 60.7%-94.5%of total daily ***,the long duration of sleeping makes it the predominant activity contributing to PM 25 exposure *** is necessary to obtain point-to-point respiratory volume(respiratory rate)data when measuring real-time PM_(2.5)exposure data and incorporate respiratory volume(respiratory rate)into the analysis of PM_(2.5)*** the first time,this study quantified the PM_(2.5)exposure inequality based on a novel method and can provide useful information for further studies on the exposure inequity.

关键词： PM_(2.5)exposure environmental inequity activity pattern urban and rural difference

Triclosan-conjugated,Lipase-responsive Polymeric Micelles for Eradication of Staphylococcal Biofilms

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Journal of Polymer science 2024年第6期42卷 718-728页

作者： Yan-Qiang Huang Yuan-Feng Li Yong Liu lin-Qi shi Guangxi Technology Innovation Cooperation Base of Prevention and Control Pathogenic Microbes with Drug Resistance Youjiang Medical University for NationalitiesBaise533000China Translational Medicine Laboratory the First Affiliated Hospital of Wenzhou Medical UniversityWenzhou325035China Wenzhou institute University of Chinese Academy of SciencesWenzhou325001China State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer Materials of Ministry of Educationand Institute of Polymer ChemistryCollege of ChemistryNankai UniversityTianjin300071China

Bacterial biofilms present a significant challenge in treating drug-resistant infections,necessitating the development of innovative *** this study,we introduce triclosan-conjugated,lipase-responsive polymeric micelles designed to exploit biofilm properties and serve as a responsive drug delivery *** micelles were created using an amphiphilic block polymer synthesized via ring-opening polymerization ofε-caprolactone(CL)and triclosan-containing cyclic trimethylene carbonate(MTC-Tri).Poly(ethylene glycol)(PEG-OH)acted as the macro-initiator,resulting in micelles with a PEG shell that facilitated their penetration into bacterial *** important advantage of our micelles lies in their interaction with local bacterial lipases within *** lipases triggered rapid micelle degradation,releasing triclosan in a controlled *** liberated triclosan effectively eliminated bacteria embedded in the ***,the triclosan-conjugated micelles displayed minimal toxicity to murine fibroblasts,indicating their biocompatibility and *** finding emphasizes the potential application of these micelles in combatting drug resistance observed in bacterial *** triclosan-conjugated,lipase-responsive polymeric micelles exhibit promising characteristics for addressing drug resistance in bacterial *** harnessing biofilm properties and implementing a responsive drug delivery system,we seek to provide an effective solution in the fight against drug-resistant bacteria.

关键词： Self-assembly Polymer prodrug Ring-opening polymerization Biofilm eradication Cytotoxicity

Oxygen‑Coordinated Single Mn Sites for Efficient Electrocatalytic Nitrate Reduction to Ammonia

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第1期16卷 147-159页

作者： Shengbo Zhang Yuankang Zha Yixing Ye Ke Li Yue lin Lirong Zheng Guozhong wang Yunxia Zhang Huajie Yin Tongfei shi Haimin Zhang Laboratory of Materials Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031People’s Republic of China University of science and Technology of China Hefei 230026People’s Republic of China Key Laboratory of Agricultural Sensors Ministry of AgricultureSchool of Information and ComputerAnhui Agricultural UniversityHefei 230026People’s Republic of China Hefei National Research Center for Physical sciences at the Microscale University of Science and Technology of ChinaHefei 230026People’s Republic of China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of Sciences19B Yuquan RoadBeijing 100049People’s Republic of China

Electrocatalytic nitrate reduction reaction has attracted increasing attention due to its goal of low carbon emission and environmental ***,we report an efficient NitRR catalyst composed of single Mn sites with atomically dispersed oxygen(O)coordination on bacterial cellulose-converted graphitic carbon(Mn-O-C).Evidence of the atomically dispersed Mn-(O-C_(2))_(4)moieties embedding in the exposed basal plane of carbon surface is confirmed by X-ray absorption *** a result,the as-synthesized Mn-O-C catalyst exhibits superior NitRR activity with an NH_(3)yield rate(RNH_(3))of 1476.9±62.6μg h^(−1)cm^(−2)at−0.7 V(*** hydrogen electrode,RHE)and a faradaic efficiency(FE)of 89.0±3.8%at−0.5 V(***)under ambient ***,when evaluated with a practical flow cell,Mn-O-C shows a high RNH_(3)of 3706.7±552.0μg h^(−1)cm^(−2)at a current density of 100 mA cm−2,2.5 times of that in the H *** in situ FT-IR and Raman spectroscopic studies combined with theoretical calculations indicate that the Mn-(O-C_(2))_(4)sites not only effectively inhibit the competitive hydrogen evolution reaction,but also greatly promote the adsorption and activation of nitrate(NO_(3)^(−)),thus boosting both the FE and selectivity of NH_(3)over Mn-(O-C_(2))_(4)sites.

关键词： Atomically dispersed Oxygen coordination Nitrate reduction reaction In situ spectroscopic studies Hydrogen evolution reaction

Overexpression of a Foreign Bt Gene in Cotton Affects the Low-Molecular-Weight Components in Root Exudates

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2007年第3期17卷 324-330页

作者： YAN Wei-Dong shi Wei-Ming LI Bao-Hai ZHANG Min State Key Laboratory of soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing210008 （China）

Most research in the past using genetically modified crops (GM crops) has focused on the ecological safety of foreign gene (i.e., the gene flow), gene products (for example, Bt (Bacillus thuringiensis) protein), and the safety of transgenic food for humans. In this study, changes in both the species and amounts of low-molecular-weight components in cotton (Gossypium hirsutum L.) root exudates after foreign Bt gene overexpression were investigated under different nutritional conditions. Transgenic cotton containing Bt (Bt-cotton), supplemented with all the mineral nutrients, secreted more organic acids than the wild-type cotton (WT). When nitrogen was removed from the full-nutrient solution, the amount of organic acids secretion of Bt-cotton was lesser than that of WT. The roots of the transgenic cotton secreted lesser amounts of amino acids and soluble sugars than the WT roots in the full-nutrient solution. Deficiencies of P and K caused a large increase in the total amino acid and soluble sugar secretions of both Bt-cotton and WT, with larger increases observed in Bt-cotton. Because transferring the foreign Bt gene into cotton can result in alterations in the components of the root exudates, with the effect varying depending on the nutritional status, the cultivation of genetically modified crops, such as Bt-cotton, in soil environments should be more carefully assessed, and the possible effects as a result of the alterations in the root exudate components should be considered.

关键词： gene overexpression low-molecular-weight components nutritional status root exudates transgenic cotton

Discrimination of polysorbate 20 by high-performance liquid chromatography-charged aerosol detection and characterization for components by expanding compound database and library

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2024年第5期14卷 722-732页

作者： shi-Qi wang Xun Zhao Li-Jun Zhang Yue-Mei Zhao Lei Chen Jin-lin Zhang Bao-Cheng wang Sheng Tang Tom Yuan Yaozuo Yuan Mei Zhang Hian Kee Lee Hai-Wei shi Jiangsu institute for Food and Drug Control Nanjing210019China School of Pharmacy China Pharmaceutical UniversityNanjing211112China School of Pharmacy Nanjing University of Chinese MedicineNanjing210046China chinese Pharmacopoeia Commission Beijing100061China nanjing Well Pharmaceutical Group Co. Ltd.Nanjing210018China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiangJiangsu212003China University of Massachusetts Amherst Amherst01003USA Department of Chemistry National University of SingaporeSingapore117543Singapore

Analyzing polysorbate 20(PS20)composition and the impact of each component on stability and safety is crucial due to formulation variations and individual *** similar structures and polarities of PS20 components make accurate separation,identification,and quantification *** this work,a high-resolution quantitative method was developed using single-dimensional high-performance liquid chromatography(HPLC)with charged aerosol detection(CAD)to separate 18 key components with multiple *** separated components were characterized by ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry(UHPLC-Q-TOF-MS)with an identical gradient as the HPLC-CAD *** polysorbate compound database and library were expanded over 7-time compared to the commercial *** method investigated differences in PS20 samples from various origins and grades for different dosage forms to evaluate the composition-process ***-Q-TOF-MS identified 1329 to 1511 compounds in 4 batches of PS20 from different *** method observed the impact of 4 degradation conditions on peak components,identifying stable components and their tendencies to ***-CAD and UHPLC-Q-TOF-MS results provided insights into fingerprint differences,distinguishing quasi products.

关键词： Polysorbate 20 Component Database Discrimination Degradation