检索结果-南通市图书馆

Application of Next Generation Sequencing for Rapid Identification of Lactic Acid Bacteria

Asian Agricultural Research 2024年第4期16卷 27-32页

作者： Xiaxia HOU Yunxia WANG Shuhuan ZHAO Hongbing JIA Cuizhi LI Inner Mongolia Yili industrial Group Co. Ltd.Hohhot 010110China

The rapid identification of lactic acid bacteria,which are essential microorganisms in the food industry,is of great significance for industrial *** identification of lactic acid bacteria traditionally relies on the isolation and identification of pure *** this method is well-established and widely used,it is not without *** subjective judgment inherent in the isolation and purification process introduces potential for error,and the incomplete nature of the isolation process can result in the loss of valuable *** advent of next generation sequencing has provided a novel approach to the rapid identification of lactic acid *** technology offers several advantages,including rapidity,accuracy,high throughput,and low *** generation sequencing represents a significant advancement in the field of DNA *** ability to rapidly and accurately identify lactic acid bacteria strains in samples with insufficient information or in the presence of multiple lactic acid bacteria sets it apart as a valuable *** application of this technology not only circumvents the potential errors inherent in the traditional method but also provides a robust foundation for the expeditious identification of lactic acid bacteria strains and the authentication of bacterial powder in industrial *** paper commences with an overview of traditional and molecular biology methods for the identification of lactic acid *** each method has its own advantages,they are not without limitations in practical ***,the paper provides an introduction of the principle,process,advantages,and disadvantages of next generation sequencing,and also details its application in strain identification and rapid identification of lactic acid *** objective of this study is to provide a comprehensive and reliable basis for the rapid identification of industrial lactic acid bacteria strains and the authen

关键词： Lactic acid bacteria Rapid identification Next generation sequencing

来源：

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

Enhancing comprehension of water vapor on adsorption performance of VOC on porous carbon materials and its application challenge

引用

Frontiers of Environmental Science & Engineering 2024年第9期18卷 51-66页

作者： Xiaolong Yao Kuan Wan Wenxin Yu Zheng Liu School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China State Environmental Protection Key Laboratory of food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China

Volatile organic compounds(VOC)have been proven to cause considerable harm to both the ecological environment and human *** VOC emissions are primarily generated by the industrial *** utilization of porous carbon as an adsorbent has emerged as an effective method for the efficient removal of VOC from industrial ***,during the actual production processes,VOC exhaust gases are often mixed with water vapor,which poses challenges for adsorption *** review provides a comprehensive overview of the remarkable advancements in various carbon materials in terms of their ability to adsorb both VOC and water ***,it systematically summarizes the influence of surface groups on adsorbents and the molecular properties of VOC on their adsorption by carbon ***,this review introduces the mechanism underlying adsorption-adsorbent interactions and discusses the construction of models for adsorbing water vapor and *** challenges associated with the application of carbon materials for VOC adsorption in humid environments are also *** review aims to offer theoretical and technical guidance for the effective purification of moist VOC waste gases emitted from industrial sources,thereby achieving precise control of VOC emissions.

关键词： Adsorption Water vapor Carbon-based adsorbents Surface functional groups VOC properties

来源：

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

Progress in the preparation,identification and biological activity of walnut peptides

引用

未来食品学报(英文) 2024年第3期4卷 205-220页

作者： Chang Liu Zijie Zhang Yuting Shang Siting Li Junxi Xia Yiling Tian Yingmin Jia Aijin Ma School of food and Health Beijing Technology and Business UniversityBeijing 100048China Hebei Yangyuan ZhiHui Beverage Co. Ltd.Hengshui 053000China Institution of Chinese Walnut Industry Hengshui 053000China Hebei Key Laboratory of Walnut Nutritional Function and Processing Technology Hengshui 053000China College of food Science and Technology Hebei Agricultural UniversityBaoding 071000China

Walnuts are rich in protein and are a high-quality plant protein *** recent years,with the growth of consumer demand for functional food and food for special medical purpose,the use of walnut protein for the preparation of functional walnut peptide ingredients or additives and other compositions has received increasing ***,the improvement of the yield of walnut peptides and the clarification of their functional activities are the bottlenecks that limit the development of these *** this end,this article reviews the pretreatment,preparation,purification and identification processes of walnut peptides,as well as their biological activities such as antioxidant activity,antitumour activity,improvement of memory,antihypertension and regulation of metabolic disorders are elaborated to provide a reference for the industrial development of walnut peptides.

关键词： Walnut Peptide Extraction Isolation Purification Identification Biological activity

来源：

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

Enzymatic Characterization of Pectinex XXL,a Pectinase Produced by Aspergillus niger,and Its Application in Fruit Juice Production

引用

现代食品科技 2024年第7期40卷 81-88页

作者： ZHU Furong LIANG Xiaomei WEI Zhifu LI Li HE Fengyuan CHENG Zhong College of food and Quality Engineering Nanning UniversityNanning 530200China Guangxi Bingke food Co.Ltd. Nanning 530100China

Pectinex XXL,a commercially prepared pectinase,was investigated for its potential application in the fruit juice *** acid was used as the substrate for determining the enzymatic properties of Pectinex XXL using the DNS *** to the results,the optimal pH for Pectinex XXL activity was 4.5,and the enzyme was stable in the pH range of 3.0~*** optimal pH and pH stability range are consistent with those of some tropical and subtropical *** optimal temperature for Pectinex XXL activity was 60℃,and the enzyme remained stable after one hour in a water bath set at 40℃.Additionally,the enzymatic activity was not inhibited in the presence of 1 mmol/L of Na^(+),Mg^(2+),Ba^(2+),Co^(2+),Zn^(2+),and Fe^(2+),whereas it was slightly inhibited in the presence of 2 mmol/L of K^(+)and Fe^(2+)and partially inhibited in the presence of 1 and 2 mmol/L of Ca^(2+)and Mn^(2+),demonstrating its good stability in acids and excellent thermal catalytic *** on the above experimental results,depectinization experiments were performed on plantain and cherry tomato juices using different amounts of Pectinex *** one hour reaction with 16 U/mL of the enzyme,the yields of the plantain and cherry tomato juices were substantially increased by 119.03%and 15.97%,respectively,while their light transmittance was remarkably enhanced by 37.65%and 12.35%,***,the enzyme reduced the viscosity of the plantain and cherry tomato juices by 88.29%and 29.50%,*** juice production experiments confirmed that this enzyme can significantly improve the yield and light transmittance of plantain juice,while effectively reducing its *** findings indicate the potential of Pectinex XXL in the industrial production of plantain juice.

关键词： plantain cherry tomato fruit juice Aspergillus niger pectinase

来源：

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

An Automatic Implementation of Oropharyngeal Swab Sampling for Diagnosing Respiratory Infectious Diseases via Soft Robotic End-Effectors

引用

Chinese Journal of Mechanical Engineering 2024年第2期37卷 55-67页

作者： Yafeng Cui Wenjie Yu Jingjing Li Qi Shao Ding Weng Guoping Yin Xiaohao Zhang Xinjun Liu Jingying Ye Jiadao Wang Huichan Zhao Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Beijing Huakang Tongbang Technology company Beijing 102609China Department of Otorhinolaryngology Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China Tianjin Research Institute for Advanced Equipment Tsinghua UniversityTianjin 300300China

The most widely adopted method for diagnosing respiratory infectious diseases is to conduct polymerase chain reaction(PCR)assays on patients’respiratory specimens,which are collected through either nasal or oropharyngeal *** manual swab sampling process poses a high risk to the examiner and may cause false-negative results owing to improper *** this paper,we propose a pneumatically actuated soft end-effector specifically designed to achieve all of the tasks involved in swab *** soft end-effector utilizes circumferential instability to ensure grasping stability,and exhibits several key properties,including high load-to-weight ratio,error tolerance,and variable swab-tip stiffness,leading to successful automatic robotic oropharyngeal swab sampling,from loosening and tightening the transport medium tube cap,holding the swab,and conducting sampling,to snapping off the swab tail and sterilizing *** an industrial collaborative robotic arm,we integrated the soft end-effector,force sensor,camera,lights,and remote-control stick,and developed a robotic oropharyngeal swab sampling *** this swab sampling system,we conducted oropharyngeal swab-sampling tests on 20 *** Digital PCR assay results(RNase P RNA gene absolute copy numbers for the samples)revealed that our system successfully collected sufficient numbers of cells from the pharyngeal wall for respiratory disease *** summary,we have developed a pharyngeal swab-sampling system based on an“enveloping”soft actuator,studied the sampling process,and imple-mented whole-process robotic oropharyngeal swab-sampling.

关键词： Diagnosis Medical robot Soft end-effector Swab-sampling Digital PCR

来源：

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

Research Progress of Microplastics Pollution in Environment

引用

Asian Agricultural Research 2024年第4期16卷 19-22页

作者： Peng WAN Zhen ZHAO Guoyan WEN Yunshuang FU Cuizhi LI Xiaoli WU Inner Mongolia Yili industrial Group Co. Ltd.Hohhot 010010China

Microplastics pollution has become one of the focuses of global environmental science *** include micro plastic particles and nano-plastic particles,which come from the decomposition of plastic products,the release of microfibers and the industrial process of plastic *** distribution of microplastics in water,soil and atmosphere is summarized,and the widespread existence of microplastics in different environmental media is *** paper also summarizes the potential impact of microplastics on ecosystems and organisms,and pays attention to the transmission and accumulation of microplastics in the food chain,as well as its potential threat to human ***,the paper discusses the methods and technologies of microplastics treatment and monitoring at present,and puts forward the direction of further research on microplastics pollution in order to formulate more effective management and mitigation strategies.

关键词： Microplastics Environment Pollution

来源：

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

Lycorine derivative effectively inhibits the replication of coronaviruses both in vitro and in vivo

引用

hLife 2024年第2期2卷 75-87页

作者： Liang Shen Jianzhong Zhao Ying Xia Junjie Lu Jiali Sun Jian Tang Hui Xing Lijuan Yin Yang Yang Chunhua Wang Department of Clinical Laboratory Xiangyang Central HospitalAffiliated Hospital of Hubei University of Arts and ScienceHubeiChina Shenzhen Key Laboratory of Pathogen and Immunity National Clinical Research Center for Infectious DiseaseState Key Discipline of Infectious DiseaseShenzhen Third People’s HospitalSecond Hospital Affiliated to Southern University of Science and TechnologyGuangdongChina Department of Clinical Laboratory Xiangyang No.1 People’s HospitalHubei University of MedicineHubeiChina State Key Laboratory of food Nutrition and Safety Key Laboratory of Industrial MicrobiologyMinistry of EducationTianjin Key Laboratory of Industry MicrobiologyNational and Local United Engineering Lab of Metabolic Control Fermentation TechnologyChina International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal ChemistryCollege of BiotechnologyTianjin University of Science&TechnologyTianjinChina

The established and ongoing prevalence of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and seasonal human coronaviruses(HCoV)like HCoV-OC43,HCoV-NL63,and HCoV-229E,pose a continuous threat to public ***,it is urgently needed to explore antiviral drugs with broad-spectrum anti-coronavirus *** previous studies have revealed that lycorine is a potent broad-spectrum anti-coronavirus drug,a natural alkaloid extracted from Amaryllidaceae with various pharmacological and microbiological ***,it is unsafe to directly use lycorine as a clinical antiviral drug due to the cytotoxicity and induction of cell *** this study,a series of lycorine derivatives were designed and *** of them,named Ly-8,was found to effectively inhibit the replication of different coronavirus strains in vitro,including ***,Ly-8 was also shown to effectively inhibit HCoVOC43 replication in the central nervous system,and provide effective protection against HCoV-OC43 infection in mice with low drug ***,Ly-8-resistant mutants were not observed during the 30 times sequential passages in cell ***,these findings suggest that Ly-8 may be a potential candidate drug for the future development of broad-spectrum anti-coronavirus drugs.

关键词： broad-spectrum antiviral drug lycorine derivative Ly-8

来源：

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

industrial Application of an Iron-Tolerant FCC Catalyst CMT-1HN

引用

China Petroleum Processing & Petrochemical Technology 2022年第3期24卷 61-66页

作者： Liu Liqiang Liu Qianqian Chen Zhenyu Ren Fei Liu Shoujun Zhu Yuxia SINOPEC hainan Refining&Chemical company Co. LtdYangpuHainan 578101 SINOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083

CMT-1HN(catalyst with metal trap),the new iron-tolerant catalyst for fluidized catalytic cracking(FCC),has been successfully applied in the resid catalytic cracking unit of Sinopec hainan Refinery and Chemical Co.,Ltd(HNRC).Two test runs were carried out to compare its performance with that of the catalyst used in the Base *** properties of the feedstocks and operating conditions were almost *** the first test run,the added iron on the catalyst reached 7628μg/g,and the total iron,nickel,vanadium,and calcium contents were equivalent to those in the base *** yield of“LPG+gasoline”increased by 0.65 percentage points,and that of dry gas decreased by 45%;the volume ratio of hydrogen to methane decreased by 9.33%.During the second test run using the upgraded CMT-1HN catalyst,the added iron on the catalyst reached 6579μg/g,and the total iron,nickel,vanadium,and calcium contents reached 23210μg/*** yield of“LPG+gasoline”increased by 1.15 percentage points,and that of dry gas decreased by 20%;the volume ratio of hydrogen to methane decreased by 20.67%.industrial application of the CMT-1HN catalyst proved its strong tolerance to metal contamination,especially iron poisoning,as well as its strong bottom cracking ability,leading to improved product *** CMT-1HN,the tank-bottom crude at HNRC lying in storage since several years,which is the main source of iron contamination in the equilibrium FCC catalyst(FCC E-cat),can be continuously processed to ensure smooth and cost-effective execution of the process scheme in the refinery.

关键词： catalytic cracking iron poisoning catalyst

来源：

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

Minimizing interfacial energy losses in inverted perovskite solar cells by a dipolar stereochemical 2D perovskite interface

引用

Journal of Energy Chemistry 2024年第3期90卷 496-503,I0011页

作者： Junjie Qian Jingjing He Qihang Zhang Chenyue Zhu Shilin Chen Zhanpeng Wei Xuesong Leng Ziren Zhou Benben Shen Yu Peng Qiang Niu Shuang Yang Yu Hou Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China National Enterprise Technology Center Inner Mongolia Erdos Electric Power and Metallurgy Group Company LimitedOrdos 016064Inner MongoliaChina

Inverted perovskite solar cells(PSCs) have attracted broad research and industrial interest owing to their suppressed hysteresis,cost-effectiveness,and ***,the issue of non-radiative recombination losses at the n-type interface between the perovskite and fullerene has impeded further improvement of photovoltaic ***,we modify the n-type interface of FAPbI_(3) perovskite films by constructing a stereochemical two-dimensional(2D) perovskite interlayer,in which the organic cations comprise both pyridine and ammonium *** pyridine N donor can create stable bonding with the surface-uncoordinated Pb on the perovskite,thereby passivating the shallow-level defects and enhancing the air stability of the ***,the pyridine N donor also offers a positive polar interface to decrease the surface work function of the perovskite film,enabling n-type ***,we employ a p-i-n photovoltaic(PV) device with the positive dipole interlayer at perovskite/fullerene contact and achieve remarkable photoelectric conversion efficiency(PCE) of 22.0%.

关键词： Perovskite solar cells Dipole interlayer Stereochemistry Non-radiative recombination

来源：

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

Effect of normal and strict anaerobic fermentation on physicochemical quality and metabolomics of yogurt

引用

food Bioscience 2022年第2期46卷 356-365页

作者： Ruixue Ding Mohan Li Yiting Zou Yiran Wang Chunyue Yan Haibing Zhang Rina Wu Junrui Wu College of food Science Shenyang Agricultural UniversityShenyang110866PR China Inner Mongolia Yili industrial Group company Limited Hohhot010080PR China

Generally,yogurts on the market are usually anaerobic fermentation,but oxygen can be still dissolved in the production process,which is actually not strict *** study explored the multiple quality indicators and the metabolomic analysis of yogurts fermented by Lactobacillus bulgaricus and Streptococcus thermophilus using two fermentation methods,namely,strict anaerobic and normal *** changes in flavor substances in yogurts,including 17 free amino acids,17 fatty acids,and 7 response value,were detected using principal component and multi factor *** on the results of the comparisons between basic physical and chemical indicators,strict anaerobic fermentation increased the growth and acidification of the two bacteria,the response value of sourness,umami and *** anaerobic fermentation increased the free amino acid(Fold change=1.53)and short chain fatty acid levels(Fold change=1.73),and reduced the polyunsaturated fatty acid(Fold change=0.51)***,metabolomic analysis based on UPLC-Triple TOF-MS/MS showed that 92 differential metabolites were screened;45 differential metabolites were increased and 47 were *** results revealed that strict anaerobic fermentation was beneficial to metabolic changes and nutritional indicators of yogurt,which may be as indicators of valuable reference to improve dairy fermentation process.

关键词： Yogurt Anaerobic fermentation Metabolomic Free amino acid Fatty acid UPLC-Triple TOF-MS/MS

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：