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Nanoparticles based sensors for rapid detection of foodborne pathogens

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International Journal of Agricultural and Biological Engineering 2013年第1期6卷 28-35页

作者： paul chen Yanbin Li Tianhong Cui Roger Ruan Department of Bioproducts and Biosystems Engineering University of Minnesota1390 Eckles Ave.St.PaulMN 55108 Department of Biological&Agricultural Engineering 203 Engineering HallUniversity of ArkansasFayettevilleAR 72701 Department of Mechanical Engineering University of Minnesota111 Church Street SEMinneapolisMN 55455 Department of Food Science and Nutrition University of Minnesota1390 Eckles Ave.St.PaulMN 55108

Rapid detection of foodborne pathogens is a key step in the control of food related *** methods for the detection of food pathogens,although typically sensitive,often require multiple time-consuming steps such as extraction,isolation,enrichment,counting,etc.,prior to measurement,resulting in testing times which can be *** is a need to develop rapid and sensitive detection *** review is intended to provide food scientists and engineers an overview of current rapid detection methods,a close look at the nanoparticles especially magnetic nanoparticle-antibody conjugates based methods,and identification of knowledge gaps and future research needs.

关键词： nano-sensor magnetic nano-particle food pathogens nuclear magnetic resonance

Non-thermal plasma assisted polymer surface modification and synthesis:A review

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International Journal of Agricultural and Biological Engineering 2014年第2期7卷 1-9页

作者： cheng Yanling Wang Yingkuan paul chen Shaobo Deng Roger Ruan China University of Mining and Technology Beijing 100083China Department of Bioproducts and Biosystems Engineering University of MinnesotaSaint PaulMN 55108USA Chinese Academy of Agricultural Engineering Beijing 100125China

This article reviews the applications of plasma to polymer surface modification and polymer *** treatment causes changes in morphology,structure and properties of *** polymers are treated using plasma,certain monomers with functional groups can be copolymerized with backbone chain or be loaded on the surface,which would help couple reaction of existing polymer chains,graft monomers onto polymers,immobilize proteins,carry antimicrobial drugs,and enhance cell ***,non-thermal plasma process creates unique properties on polymers which allow improved and expanded applications of polymers in food packaging and biotechnology.

关键词： plasma modification synthesis NTP polymers functional groups

Size matters:small distributed biomass energy production systems for economic viability

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International Journal of Agricultural and Biological Engineering 2008年第1期1卷 64-68页

作者： Roger Ruan paul chen Richard Hemmingsen Vance Morey Doug Tiffany Center for Biorefining Department of Bioproducts and Biosystems EngineeringUniversity of Minnesota1390 Eckles AvenueSt.PaulMN 55108USA Initiative for Renewable Energy and Environment(IREE) University of Minnesota Department of Applied Economics University of Minnesota.

Current large scale biomass energy production systems including cellulosic ethanol,gasification,and pyrolysis facilities face significant technical and economic *** with these large scale systems,small distributed biomass energy production systems(DBEPS)are believed to offer advantages including lower capital costs,lower feedstock costs,simplified transportation and logistics and higher returns for biomass *** compliant technologies are expected to make utilization of regional biomass supplies practical and economically viable in the *** paper presents arguments on the need and importance of DBEPS,available DBEPS options,and an economic scenario of DBEPS implementation on an average size farm in the US.

关键词： renewable energy biomass biorefining pyrolysis thermochemical conversion

NMR转折点温度对食品储存过程中Maillard反应速率影响(英文)

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农业工程学报 2008年第2期24卷 214-220页

作者：张锦胜林向阳阮榕生 paul chen 南昌大学教育部食品科学重点实验室南昌330047 美国明尼苏达大学生态系统与农业工程系圣保罗55108

采用核磁共振(NMR)技术对以葡萄糖、海藻糖、蔗糖、赖氨酸构成的模型食品进行磁共振实验,绘制体系NMR状态图并计算转折点温度,同时在不同温度下进行储藏实验,考察体系中葡萄糖的变化,评估不同储藏温度下的Maillard反应速率。结果表明:... 详细信息

采用核磁共振(NMR)技术对以葡萄糖、海藻糖、蔗糖、赖氨酸构成的模型食品进行磁共振实验,绘制体系NMR状态图并计算转折点温度,同时在不同温度下进行储藏实验,考察体系中葡萄糖的变化,评估不同储藏温度下的Maillard反应速率。结果表明:模型食品体系含水量不同、非反应组分含量不同,其NMR转折点温度有所不同。低水分含量的体系具有相对高的NMR转折点温度。即使在相同的储藏温度下,含水量相同而非反应组分含量不同的情况下,体系的Maillard反应速率也有所不同。储藏温度处于体系的NMR转折点之下时,体系的Maillard反应速率明显要比在NMR转折点温度之上要慢。由此,可以通过改变食品的配方、含水量等改变体系的NMR转折点温度,可以有效地延长食品的货架期。因此,核磁共振状态图对于评估最佳的储藏温度,以及通过配方设计来延长食品的货价期具有指导意义。

关键词：玻璃态转变:美拉德反应:核磁共振状态图转折点温度

Enhanced microalgae cultivation using digested kitchen waste sewage treated with struvite precipitation

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International Journal of Agricultural and Biological Engineering 2017年第1期10卷 142-147页

作者： Tian Chaoyu Ye Xiao Xu Yingying Hua Wei Wang Wanqing Wu Shuang paul chen cheng Yanling Beijing Key Laboratory of Biomass Waste Resource Utilization Biochemical Engineering CollegeBeijing Union UniversityBeijing 100023China University of Minnesota Saint PaulMN 55108USA

This study demonstrated the feasibility of using struvite for nutrient management in algae cultivation on sewage *** results showed that struvite precipitation treatment dramatically reduced the ammonia in the digested kitchen waste *** untreated sewage was unable to sustain continuous growth of algae,while the algae growth on the treated sewage was comparable with that on an artificial algae culture medium(BG11).The rapid growth on the treated sewage was accompanied by substantial removal of *** struvite precipitate recovered from the treated sewage was proven to be an alternative source of nitrogen,phosphorus and *** struvite precipitate was evidenced that it could substitute culture media in algae *** study showed that struvite treatment is viable for nutrient management of algae cultivation on sewage wastewaters which do not have suitable nutrient profiles.

关键词： digested kitchen waste sewage microalgae nutrients removal struvite precipitation treatment

Synthesis and characterization of a starch-based cationic flocculant for microalgae harvesting

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International Journal of Agricultural and Biological Engineering 2016年第3期9卷 139-145页

作者： cheng Yanling Hua Wei Liu Wenhui Wang Wanqing Ye Xiao Li Liang paul chen Roger Ruan Beijing Key Laboratory of Biomass Waste Resource Utilization Biochemical Engineering CollegeBeijing Union UniversityBeijing 100023China Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota1390 Eckles AveSt.Paul 55108United States

A process for making a starch-based cationic flocculant for microalgae harvest was studied and the performance of the flocculant was *** substituted cationic starch was prepared by reacting corn starch with glycidyltrimethylammonium chloride(GTAC),during which the hydroxyl groups of anhydroglucose units of the starch were partially substituted by the ammonium groups through *** factors affecting degree of substitution(DS),such as reaction temperature and time,catalyst amount,and the water content were investigated and optimal reaction conditions were *** relationship between DS and microalgae harvest was determined.A batch of cationic starch with optimal DS was synthesized and used for flocculation *** flocculation experiment results showed that,for the original microalgae concentration(dry weight)of 1 g/L,the cationic starch-based flocculants can harvest over 90%of the microalgae in pH from 5 to 10,with the aggregation and precipitation time of 10 min to 30 min,and the mass ratios of flocculants to microalgae of 1:8-1:18(dry mass ratio).Using starch-based flocculant to harvest microalgae in the effluent is not only efficient,but also nontoxic to the water system,which is very important to the effluent reuse and certain microalgae applications.

关键词： microalgae harvest flocculation starch-based cationic flocculants

Utilization of almond residues

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International Journal of Agricultural and Biological Engineering 2010年第4期3卷 1-18页

作者： paul chen Yanling cheng Shaobo Deng Xiangyang Lin Guangwei Huang Roger Ruan Center for Biorefining Department of Bioproducts and Biosystems EngineeringUniversity of Minnesota1390 Eckles AvenueSt.PaulMN 55108USA College of Biological Science and Technology Fuzhou UniversityFuzhou 350108China Almond Board of California ModestoCaliforniaUSA State Key Laboratory of Food Science and Technology Engineering Research Center for Biomass ConversionMinistry of EducationNanchang UniversityNanchang 330047China

Almond production generates millions of tons of residues in addition to almond *** residues,including shells,hulls,pruning,leaves,skin and inedible kernel disposition,are good feedstocks for production of bioenergy and other valuable *** this article,research on the utilization of almond residues as energy and non-energy feedstocks is *** options for converting almond residues to energy and other valuable products are *** commercial conversion technologies are *** for further research and development are recommended.

关键词： activated carbons almond anti-oxidants bioenergy biomass biorefinery gasification heat power pyrolysis

IJABE Guidelines for Authors

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International Journal of Agricultural and Biological Engineering 2011年第4期4卷 77-84页

作者： Wang Yingkuan paul chen Maizidian Street Chaoyang DistrictBeijing100125China Dept of BioProducts&BioSystems Engineering University of Minnesota1390 Eckles Ave.St.PaulMN 55108USA

1 About IJABE Focus and Scope ***.&***(IJABE)is an international peer-reviewed open-access journal sponsored and published jointly by US-based Association of Overseas Chinese Agricultural,Biological and Food Engineers(AOCABFE)and Chinese Society of Agricultural Engineering(CSAE).The ISSN 1934-6344 and eISSN 1934-6352 numbers for the IJABE have been registered,which allow IJABE to publish in both online and hard *** access IJABE provides easy sharing of knowledge,and is thus in the best interest of authors,readers,and increases the availability,accessibility,visibility and impact of the papers,and journal as a whole.

关键词： journal IJABE visibility

IJABE Guidelines for Authors

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International Journal of Agricultural and Biological Engineering 2009年第1期2卷 79-86页

作者： Wang Yingkuan paul chen Room 506 No.41Maizidian StreetChaoyang DistrictBeijing100125China Center for Biorefining Dept of BioProducts&BioSystems EngineeringUniversity of Minnesota1390 Eckles Ave.St.PaulMN 55108USA

关键词： journal IJABE visibility