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Food Science and Human Wellness 2024年

作者： Shuai Chen Liuming Xie pingwei wen Qiang Yu Yi Chen Hanyu Lu Ting Chen Xin Tao Jianhua Xie International Institute of Food Innovation Co.， Ltd.， Nanchang University State Key Laboratory of Food Science and Resources， Nanchang University

Intestinal oxidation-reduction balance is essential to protect host health. Research on the underlying mechanisms of oxidation homeostasis can provide conditions to the treatment or protection of intestinal oxidative stress. Therefore， the mechanism of polysaccharide (MBP) with alkali-extracted from mung bean skin in alleviating oxidative damage induced by H2O2-induced in Intestinal epithelial cells (IEC)-6 cells was explored. Results indicated that MBP effectively mitigated the H2O2-induced decrease in IEC-6 cell viability， restored superoxide dismutase (SOD) activity， lowered malondialdehyde (MDA) content， and decreased reactive oxygen species (ROS) level. Western blotting showed that MBP may mitigate oxidative damage through NF-κB， MAPK and Nrf2 signaling pathway， and RNA sequencing (RNA-seq) analysis confirmed that MBP can protect cells by regulating MAPK and NF-κB signaling pathways. Moreover， the results of the inhibitor experiment also support the above hypothesis. These results verified that MBP has the capacity to mitigate oxidative damage induced by H2O2in IEC-6 cells through MAPK and NF-κB signaling pathway. The study showed that MBP can assist preventing intestinal diseases relating to oxidative stress， which could facilitate the development of functional foods.

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Effects of Microwave Torrefaction with Mg（OH）2 on Characteristics of Bio-oil from Co-pyrolysis of Straw Stalk and Soapstock

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China Petroleum Processing & Petrochemical Technology 2019年第3期21卷 10-16页

作者： wen pingwei Zhou Yue Dai Leilei Wang Yunpu Liu Yuhuan Ruan Roger College of Chemistry and Chemical Engineering College of Life ScienceJiangxi Normal UniversityNanchang 330022 Engineering Research Center for Biomass Conversion Ministry of EducationNanchang UniversityNanchang 330047 Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of MinnesotaMN 55108USA

This study investigated the effects of torrefaction with Mg(OH)2 on the properties of bio-oil formed from the microwave-assisted catalytic fast co-pyrolysis of straw stalk and *** effects of torrefaction temperature and residence time on the yield and composition of bio-oil were *** showed that the torrefaction temperature and residence time remarkably influenced the yield and composition of *** the increase in temperature and time,the bio-oil yield and the proportion of oxygen-containing compounds decreased,while the proportion of aromatic compounds *** the feedstocks were subject to torrefaction reaction for 20 min at 260°C,the proportion of oxygen-containing compounds decreased from 29.89%to 16.49%.Meanwhile,Mg(OH)2 could render the deoxidization function of torrefaction process increasingly *** proportion of the oxygen-containing compounds reached a minimum(14.41%),when the biomass-to-Mg(OH)2 ratio was 1:1.

关键词： microwave torrefaction Mg(OH)2 straw stalk soapstock bio-oil

Microwave-Assisted Decarboxylation of Sodium Oleate and Renewable Hydrocarbon Fuel Production

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China Petroleum Processing & Petrochemical Technology 2013年第3期15卷 19-27页

作者： Wang Yunpu Liu Yuhuan Ruan Rongsheng wen pingwei Wan Yiqin Zhang Jinsheng Nanchang University State Key Laboratory of Food Science and Technology Nanchang University Engineering Research Center for Biomass ConversionMinistry of Education

The carboxyl terminal of sodium oleate has a stronger polarity than that of oleic acid;this terminal is more likely to be dipole polarized and ionically conductive in a microwave *** oleate was used as the model compound to study the decarboxylation of oleic acid leading to hydrocarbon formation via microwave-assisted pyrolysis *** pyrolysis gas,liquid,and solid products were precisely analyzed to deduce the mechanism for decarboxylation of sodium *** energy was able to selectively heat the carboxyl terminal of sodium *** decarboxylation,the double bond in the long hydrocarbon chain formed a p-πconjugated system with the carbanion *** resulting p-πconjugated system was more stable and beneficial to the pyrolysis reaction(decarboxylation,terminal allylation,isomerization,and aromatization).The physical properties of pyrolysis liquid were generally similar to those of diesel fuel,thereby demonstrating the possible use of microwaves for controlling the decarboxylation of sodium oleate in order to manufacture renewable hydrocarbon fuels.

关键词： microwave radiation sodium oleate conjugated system decarboxylation hydrocarbon

Modulation doping of p-type Cu_(12)Sb_(4)S_(13)toward improving thermoelectric performance

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Journal of Materials Science & Technology 2024年第4期171卷 71-79页

作者： Khak Ho Lim Mingquan Li Yu Zhang Yue Wu Qimin Zhou Qingyue Wang Xuan Yang pingwei Liu wen-Jun Wang Ka Wai Wong Ka Ming Ng Yu Liu Andreu Cabot Institute of Zhejiang University-Quzhou Quzhou 324000China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310007China School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei 230009China Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Ostia Technologies Limited United Kingdom Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongChina ICREA Pg.Lluis Companys 23Barcelona 08010Spain Catalonia Energy Research Institute-IREC Sant Adria del BesosBarcelona 08930Spain

The commercial viability of thermoelectric(TE)devices relies heavily on two factors:cost reduction and efficiency *** this study,we first produce p-type Cu_(12)Sb_(4)S_(16-x)(x=0,3,4)using a low-temperature bottom-up approach and demonstrate Cu_(12)Sb_(4)S_(13)to show the best TE performance among the three tested ***,the TE energy conversion efficiency of Cu_(12)Sb_(4)S_(13)is further enhanced by optimizing its electronic band structure through the incorporation of small amounts of *** an optimal Te content of 5 mol%,more than a twofold increase in the TE figure of merit(zT)is *** gain insight into the mechanism of improvement on the transport properties of the mate-rial,we compare the interphase transport mechanism by incorporating nanodomains of different metals(Ag and Cu)into the Cu_(12)Sb_(4)S_(13)*** improved electrical conductivity obtained with Cu_(12)Sb_(4)S_(13)-Te nanocomposites is attributed to a charge flooding of the Cu_(12)Sb_(4)S_(13)*** contrast,excessive down-ward band-bending at the interphases of Ag/Cu metal-semiconductor drastically reduces the electrical ***,a weighted mobility(μw)analysis shows a dominant thermal activation of carri-ers in Cu_(12)Sb_(4)S_(13)-Te *** this material,a strong decrease in lattice thermal conductivity is also found,which is associated with a phonon-carrier scattering *** work shows the impor-tance of proper band-engineering in TE nanocomposites to decouple electrical and thermal transport to enhance TE performance,and the efficacy ofμw for electrical and thermal transport analysis.

关键词： Modulation doping Thermoelectric Interphase transport Charge flooding Phonon-carrier scattering

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中国小龙虾产业发展现状和未来发展趋势

食品工业科技 2022年第8期43卷 463-470页

作者：李楚君涂宗财温平威王辉南昌大学食品科学与技术国家重点实验室江西南昌330047 江西师范大学国家淡水鱼加工技术研发专业中心江西南昌330022 江西师范大学江西省淡水鱼高值化利用工程技术研究中心江西南昌330022

自“十三五”计划以来,中国小龙虾整体养殖面积不断扩大、产业加工量不断提高,因此具有较高的经济效益和良好的发展态势。如今即食调味小龙虾已经成为当代青年人的一种新的消费时尚,预计2022年我国小龙虾产业势头将继续稳步增长,消费市... 详细信息

自“十三五”计划以来,中国小龙虾整体养殖面积不断扩大、产业加工量不断提高,因此具有较高的经济效益和良好的发展态势。如今即食调味小龙虾已经成为当代青年人的一种新的消费时尚,预计2022年我国小龙虾产业势头将继续稳步增长,消费市场进一步扩大,一二三产业更深层次融合。为增进国内外对中国小龙虾产业发展现状的了解,促进产业向精深加工型方向大幅度升级,本文从小龙虾当前的养殖现状、营养成分及其功能特性、加工技术、品质保鲜、废弃物深度加工等方面进行总结梳理,阐述当前小龙虾产业体系和综合利用研究中的加工信息以及所面临的技术问题,以期提高该类虾资源的有效利用率,提升市场竞争力,并展望产业今后的发展趋势。

关键词：小龙虾产业加工现状营养成分活性成分资源利用

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高效液相色谱-电喷雾串联质谱法测定饲料中的N-氨基甲酰-L-谷氨酸

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色谱 2014年第2期32卷 184-188页

作者：唐圣芸王远兴温平威辛贞南昌大学食品科学与技术国家重点实验室江西南昌330047

建立了高效液相色谱-电喷雾串联质谱（HPLC-ESI-MS/MS）测定饲料中N-氨基甲酰-L-谷氨酸（NCG）含量的方法.饲料样品经甲醇提取、混合型强阴离子交换反相固相萃取（PXA）柱净化、HPLC分离后,采用ESI-MS/MS在正离子多反应监测（MRM）模式... 详细信息

建立了高效液相色谱-电喷雾串联质谱（HPLC-ESI-MS/MS）测定饲料中N-氨基甲酰-L-谷氨酸（NCG）含量的方法.饲料样品经甲醇提取、混合型强阴离子交换反相固相萃取（PXA）柱净化、HPLC分离后,采用ESI-MS/MS在正离子多反应监测（MRM）模式下进行检测,以碎片离子m/z 148.0和m/z 84.0进行定性,以碎片离子m/z130.0进行定量.NCG的检出限（S/N＞3）为24 μg/kg,定量限（S/N＞ 10）为80μg/kg,在20～1 000 μg/L的质量浓度范围内峰面积与含量的线性关系良好,相关系数为0.999 9.对饲料中NCG在80、200、500 mg/kg等3个添加水平下的回收率进行了测定,分别为104.0％、103.5％、95.3％,相对标准偏差分别为7.5％、6.3％、5.8％.结果表明,该方法操作简单,净化效果好,快速,灵敏度和准确度高,符合对饲料样品中NCG检测分析的要求.

关键词：固相萃取高效液相色谱-电喷雾串联质谱法 N-氨基甲酰-L-谷氨酸饲料

高压微射流处理对大豆分离蛋白结构功能特性及其乳液性质的影响

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中国油脂 2020年第1期45卷 61-67页

作者：朱明明宁方建温平威熊华赵强南昌大学食品科学与技术国家重点实验室南昌330047

采用高压微射流技术在不同压力条件下对大豆分离蛋白(SPI)进行处理,分析处理前后SPI结构、功能特性以及乳液性质的变化。结果表明:低压均质处理可使SPI的粒径降低,当均质压力增加至一定程度时,蛋白间的相互作用增加,颗粒粒径增加;均质... 详细信息

采用高压微射流技术在不同压力条件下对大豆分离蛋白(SPI)进行处理,分析处理前后SPI结构、功能特性以及乳液性质的变化。结果表明:低压均质处理可使SPI的粒径降低,当均质压力增加至一定程度时,蛋白间的相互作用增加,颗粒粒径增加;均质压力在0~95 MPa范围内随着压力逐渐升高,SPI的溶解性得到了显著改善,而当均质压力增加到125 MPa和155 MPa时,溶解性反而降低;高压均质处理对乳化性的影响与溶解性变化趋势基本吻合;表面疏水性随着压力的增大而增大;内源荧光光谱结果表明,随着均质压力的增大,最大吸收波长红移,荧光强度降低,色氨酸残基暴露于极性环境中;SPI乳液粒径随着均质压力的增大(95 MPa除外)整体依次变小,SPI乳液在压力65 MPa处理时油脂氧化速率最快,SPI乳液在压力125、155 MPa处理时的初级氧化速率要低于未处理的乳液。

关键词：大豆分离蛋白高压微射流结构功能特性乳液

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乌桕籽油钾皂微波脱羧制备可再生烃类燃料

化工进展 2013年第10期32卷 2361-2365页

作者：刘玉环马雯王允圃阮榕生温平威万益琴南昌大学生物质转化教育部工程研究中心江西南昌330047 南昌大学食品科学与技术国家重点实验室江西南昌330047

乌桕籽的含油率高达40%,是生产生物柴油的优质原料。本研究采用绿色环保节能高效的乌桕籽油提取方法,以高压蒸汽作为水剂提取油脂的方法,进行了相关工艺的实验研究,以乌桕油脂皂化物为研究对象,通过微波极化皂化物羧基端促进脱羧制备优... 详细信息

乌桕籽的含油率高达40%,是生产生物柴油的优质原料。本研究采用绿色环保节能高效的乌桕籽油提取方法,以高压蒸汽作为水剂提取油脂的方法,进行了相关工艺的实验研究,以乌桕油脂皂化物为研究对象,通过微波极化皂化物羧基端促进脱羧制备优质烃类燃料。探讨了料液比、烘烤时间、烘烤温度、pH值、高压蒸汽处理时间等因素对油脂提取率的影响。微波裂解所得到液态产物为皂类干重的60%以上,裂解液态产物的密度为0.865 g/cm3,黏度2.73 mm2/s,与柴油的性质基本相似。研究结果为利用乌桕籽油生产生物柴油的工业化提供了一定基础。

关键词：乌桕油脂水剂提油皂化物脱羧

不同碱金属乌桕油皂微波极化脱羧成烃类燃料的工艺

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化工进展 2014年第3期33卷 638-642页

作者：王允圃刘玉环阮榕生温平威马雯万益琴南昌大学生物质转化教育部工程研究中心江西南昌330047 南昌大学食品科学与技术国家重点实验室江西南昌330047

不饱和脂肪酸盐微波极化条件下更容易脱羧成烃，本研究分别以氢氧化锂、氢氧化钠、氢氧化钾皂化乌桕油，以不同碱金属乌桕油皂化物和乌桕油为研究对象，在恒定的微波功率下裂解脱羧成烃，通过GC-MS等分析裂解产物，微波能选择性地加热... 详细信息

不饱和脂肪酸盐微波极化条件下更容易脱羧成烃，本研究分别以氢氧化锂、氢氧化钠、氢氧化钾皂化乌桕油，以不同碱金属乌桕油皂化物和乌桕油为研究对象，在恒定的微波功率下裂解脱羧成烃，通过GC-MS等分析裂解产物，微波能选择性地加热乌桕油皂羧基端，不饱和键在微波极化过程中与碳负离子中间体形成P-π共轭体系，使裂解反应（脱羧、端烯化、异构化和芳构化等）顺利进行。皂化物极性越大，升温速率越快，液体烃类产率越高，脱羧效果越明显，裂解液体的密度为0.825～0.865 g/cm3，黏度为2.10～2.55 mm2/s，与柴油的性质非常相似，从而证明微波极化乌桕油皂脱羧制烃类燃料的可行性。

关键词：乌桕油脂皂化微波脱羧烃类燃料再生能源

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稻壳热解动力学研究对比及理化性质分析

农机化研究 2015年第3期37卷 254-257,268页

作者：王允圃刘玉环阮榕生温平威姚远万益琴南昌大学生物质转化教育部工程研究中心南昌330047 南昌大学食品科学与技术国家重点实验室南昌330047

通过对稻壳的理化分析后,分别以在10、15、20℃/min升温速率下的热解研究,有效分析升温速率、热解时间、热解特性等对其过程的影响。研究表明,稻壳的热解过程大致分为失水和预热、快速热解断键和炭化3个区间,并采用二级反应动力学模型,... 详细信息

通过对稻壳的理化分析后,分别以在10、15、20℃/min升温速率下的热解研究,有效分析升温速率、热解时间、热解特性等对其过程的影响。研究表明,稻壳的热解过程大致分为失水和预热、快速热解断键和炭化3个区间,并采用二级反应动力学模型,由Coats-Redfern法求得相应的活化能和频率因子,从而得到热解动力学参数,对稻壳的高效炼制条件优化及设计相关的炼制装备提供研究基础。

关键词：稻壳理化性质热解特性动力学计算