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油莎豆不溶性膳食纤维理化性质、结构特征和乳化特性研究

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食品科学技术学报 2024年第1期42卷 156-163页

作者：王玲玉赵雪玲王安琪陈诚汪轩羽王新涛李秀荷王慧芳戴福宏高铁成周中凯李宁天津科技大学食品科学与工程学院天津300457 江南大学食品科学与技术国家重点实验室江苏无锡214122 新疆三礼粮油有限公司新疆图木舒克843900 广州焙乐道食品有限公司广东广州511400

油莎豆是一种优质且有益健康的作物,含有丰富的营养物质。采用酶法提取油莎豆不溶性膳食纤维,以商业化大豆膳食纤维为对照,进行理化性质测定、结构特征和乳化性能研究。结果表明:与大豆膳食纤维相比,油莎豆不溶性膳食纤维具有更好的持水... 详细信息

油莎豆是一种优质且有益健康的作物,含有丰富的营养物质。采用酶法提取油莎豆不溶性膳食纤维,以商业化大豆膳食纤维为对照,进行理化性质测定、结构特征和乳化性能研究。结果表明:与大豆膳食纤维相比,油莎豆不溶性膳食纤维具有更好的持水力[(14.45±0.19)g/g]、持油力[(8.21±0.06)g/g]和膨胀力[(14.23±0.12)mL/g]。油莎豆不溶性膳食纤维的体积平均粒径为(64.47±0.18)μm,是大豆膳食纤维体积平均粒径的56.65%。低场核磁结果显示,油莎豆不溶性膳食纤维具有更多的结合水,而大豆膳食纤维中则含有更多的自由水。热重分析表明,与大豆膳食纤维相比,油莎豆不溶性膳食纤维的质量损失较少,热稳定性更好。在乳化性能方面,随着油莎豆不溶性膳食纤维质量分数的增加,其乳液粒径显著性增大;在同等膳食纤维质量分数下,油莎豆不溶性膳食纤维制备的乳液粒径均显著低于大豆膳食纤维制备的乳液粒径,说明油莎豆不溶性膳食纤维制备的乳液稳定性优于大豆膳食纤维制备的乳液。在相同质量分数下,油莎豆不溶性膳食纤维的黏度低于其对应的大豆膳食纤维,但是质量分数4%的油莎豆不溶性膳食纤维制备的乳液的储能模量和损耗模量为最高。研究旨在为油莎豆不溶性膳食纤维的开发利用提供理论依据。

关键词：油莎豆不溶性膳食纤维理化性质结构特征乳化性能

肉豆蔻精油/羟丙基-β-环糊精包合物对冷鲜猪肉的保鲜效果

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食品与发酵工业 2024年第10期50卷 187-196页

作者：席小辉胡瑜文张升阳宋欠欠黄轩宇金懿志刘爱冰李诚胡滨四川农业大学食品学院四川雅安625000

为研究肉豆蔻精油/羟丙基-β-环糊精(nutmeg essential oil/hydroxypropyl-β-cyclodextrin,NEO/HP-β-CD)包合物对冷鲜猪肉的保鲜效果,采用不同浓度的包合物结合浸泡法、涂抹法和无纺布法处理冷鲜猪肉,每隔2 d测定菌落总数、pH、挥发... 详细信息

为研究肉豆蔻精油/羟丙基-β-环糊精(nutmeg essential oil/hydroxypropyl-β-cyclodextrin,NEO/HP-β-CD)包合物对冷鲜猪肉的保鲜效果,采用不同浓度的包合物结合浸泡法、涂抹法和无纺布法处理冷鲜猪肉,每隔2 d测定菌落总数、pH、挥发性盐基氮、硫代巴比妥酸值、质构、汁液流失率、色泽与感官指标。结果表明,NEO/HP-β-CD包合物添加量1%的无纺布法可有效降低贮藏过程中冷鲜猪肉的菌落总数、pH值、挥发性盐基氮含量,延缓猪肉质构特性与色泽劣变,提高感官品质;与对照组(6 d)相比,可延长贮藏期4 d。因此,NEO/HP-β-CD包合物添加量1%的无纺布法对冷鲜猪肉具有较好的保鲜效果。

关键词：肉豆蔻精油/羟丙基-β-环糊精包合物冷鲜猪肉保鲜效果指标测定

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基于改进PSO算法的B样条曲线拟合

传感器与微系统 2022年第7期41卷 130-133,138页

作者：李轩宇张兆军许钊雄江苏师范大学电气工程及自动化学院江苏徐州221116

节点向量的确定对B样条曲线最终拟合效果有着重要影响。粒子群优化(PSO)算法在优化节点向量时存在易于陷入局部极值的问题,导致曲线拟合效果较差。针对这一问题,提出一种改进的PSO算法—GBPSO算法。在PSO算法中引入天牛须搜索(BAS)策略... 详细信息

节点向量的确定对B样条曲线最终拟合效果有着重要影响。粒子群优化(PSO)算法在优化节点向量时存在易于陷入局部极值的问题,导致曲线拟合效果较差。针对这一问题,提出一种改进的PSO算法—GBPSO算法。在PSO算法中引入天牛须搜索(BAS)策略增强算法的局部搜索能力,引入交叉和变异操作增强算法的全局搜索能力。首先通过罚函数的方法建立B样条曲线拟合问题的数学模型,然后使用GBPSO算法优化节点向量,最后得到误差较小的拟合曲线。通过对4个实例的仿真以及与另外3种算法的实验数据对比,验证了所提算法的有效性。

关键词：改进粒子群优化算法 B样条曲线拟合节点向量

LNG接收站内BOG再冷凝工艺的计算与优化

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能源化工 2022年第2期43卷 63-69页

作者：苗嘉旭李轩宇门驰李慧瑶周洋洋何昊毕海胜青岛科技大学机电工程学院山东青岛266061 中国石油集团渤海石油装备制造有限公司辽河热采机械制造分公司辽宁盘锦124209

液化天然气(LNG)的储存过程中往往产生大量蒸发气体(boiled off gas,BOG),而LNG接收站内传统BOG再冷凝回收工艺具有能耗高、工况适应性差等缺点。基于ASPEN HYSYS软件对传统BOG再冷凝工艺进行建模,确定了影响能耗和质量比的3个主要因素:... 详细信息

液化天然气(LNG)的储存过程中往往产生大量蒸发气体(boiled off gas,BOG),而LNG接收站内传统BOG再冷凝回收工艺具有能耗高、工况适应性差等缺点。基于ASPEN HYSYS软件对传统BOG再冷凝工艺进行建模,确定了影响能耗和质量比的3个主要因素:BOG处理量、压缩机和低压泵出口温度、外输压力,分析了3个主要因素对BOG再冷凝系统的影响规律,在传统BOG再冷凝工艺的基础上提出预冷式BOG再冷凝工艺,并对LNG接收站进行了最小外输工况的分析。模拟结果表明:在相同工况下,预冷式BOG再冷凝工艺较传统工艺节能效果显著,质量比和最小外输量均有明显下降。

关键词：液化天然气蒸发气体再冷凝模拟工艺优化

Interfacial Engineering of NiFeP/NiFe-LDH Heterojunction for Efficient Overall Water Splitting

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Chinese Journal of Structural Chemistry 2022年第4期41卷 46-53页

作者： xuanyu Long Jiazhi Meng Jiabao Gu Lanqing ling Qianwen li Nan liu Kaiwen Wang Zequan li The School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China Beijing Key Lab of Microstructure and Properties of Advanced Materials Beijing University of TechnologyBeijing 100124China

In consideration of application prospect of non-noble metallic materials catalysts,the study of exploring more highly effective electrocatalysts has been focused on by ***,a novel strategy is employed to construct a heterojunction consisting of metal phosphide Ni_(x)Fe_(y)P and layered double hydroxide(LDH)with graphene oxide(GO)as conductive *** adjusting the molar ratio of Ni to Fe,a series of heterojunctions with mixed valence state Fe^(δ+)/Fe^(3+)and Ni^(δ+)/Ni^(2+)(δis likely close to 0)redox couples are achieved and strong synergistic effects towards overall water splitting performance are *** optimized catalyst with a Ni/Fe molar ratio of 0.72:0.33,namely Ni_(0.7)Fe_(0.3)P/LDH/GO,delivers ultra-low overpotentials for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)of 79 and 198 mV at the current density of 10 mA·cm^(-2),***,for overall water-splitting practical application,it only requires 1.526 V at 10 mA·cm^(-2)with robust stability,which is superior to most reported *** results demonstrate the im-proved electronic conductivity,enlarged electrochemically active area and accelerated kinetics together account for the enhanced *** work supplies new prospects for the promotion and application of such heterojunction electrocatalysts in overall water splitting.

关键词： overall water splitting electrocatalysis heterojunction phosphide layered double hydroxide

Continuous and highly ordered organic semiconductor thin films via dip-coating:the critical role of meniscus angle

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Science China Materials 2020年第7期63卷 1257-1264页

作者： xuanyu liu Yu Zhang Xiaotao Zhang Rongjin li Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

Dip-coating is a low-cost,high-throughput technique for the deposition of organic semiconductors over large area on various *** studies have been done and many parameters such as withdrawal speed,solvent type and solution concentration have been ***,most of the depositions were ribbons or dendritic crystals with low coverage of the substrate due to the ignorance of the critical role of dynamic solution-substrate interactions during *** this study,meniscus angle(MA)was proposed to quantify the real-time in-situ solutionsubstrate interactions during *** proper surface treatment of the substrate,the value of MA can be tuned and centimeter-sized,continuous and highly ordered organic semiconductor thin films were *** charge transport properties of the continuous thin films were investigated by the construction of organic field-effect ***(average)hole mobility up to 11.9(5.1)cm2V-1s-1was *** average mobility was 82%higher than that of ribbon crystals,indicating the high crystallinity of the thin *** work reveals the critical role of dynamic solutionsubstrate interactions during *** ability to produce large-area,continuous and highly ordered organic semiconductor thin films by dip-coating could revival the old technique for the application in various optoelectronics.

关键词： organic field-effect transistor dip-coating meniscus angle charge transport mobility

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以科学发展观为指导全力做好新时期水文工作

价值工程 2011年第19期30卷 313-313页

作者：李选彧陈茜辽宁省水文水资源勘测局辽阳分局辽阳111000

水文是开发利用和保护水资源的基础工作。我们要深刻领会新时期对水文工作提出的新要求,充分认识水文发展面临的新形势,牢牢抓住水文发展面临的新机遇。

关键词：科学发展观新时期水文工作

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新时期如何做好水利行政工作之探究

价值工程 2011年第19期30卷 325-325页

作者：陈茜李选彧辽宁省水文水资源勘测局辽阳分局辽阳111000

我们要充分认识水行政工作面临的新形势,毫不动摇地以科学发展观为指导,坚持以人为本的执法理念,紧紧围绕水利中心工作,扎实做好新时期水行政工作。

关键词：新时期水利行政探究

Role of Conformational Entropy in Complex Macromolecular Systems

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Chemical Research in Chinese Universities 2023年第5期39卷 709-718页

作者： DAI Xiaobin WAN Hai-Xiao ZHANG xuanyu WEI Wenjie CHEN Wenlong ZHANG Longgui li Juan YAN li-Tang State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084P.R.China Beijing Research Institute of Chemical Industry SINOPECBeijing 100013P.R.China

Conformation is the key to revealing the physical characteristics of macromolecular systems and receives tremendous interest from the fields of polymer physics and biological *** conformational entropy,related to the number of conformations of the macromolecule,plays a predominant role in the structural formation,transition,and dynamics of macromolecular *** this review,we present a comprehensive overview of the research,development and applications of the conformational entropy in complex macromolecular *** begin by discussing the physical origin of the conformational entropy based on statistical mechanics of macromolecules in classical polymer physics,and then introduce the recent progress on the predictive modeling of the conformational entropy,associated with a variety of typical macromolecular ***,we also highlight several principles and rules,which have been harnessed to manipulate the structural organization of complex macromolecular systems through the conformational *** anticipate that this review will further promote fundamental research in polymer physics,and offer intriguing prospects for applications in complex macromolecular systems including biomacromolecules,grafted nanoparticles,and polymer nanocomposites.

关键词： Polymer conformation Entropy Stiffness External field Confinement