阿拉伯胶溶液的流动性、触变性和动态粘弹性分析  

Analysis of flowability,thixotropy and dynamic viscoelastic of Gum Arabic solution

作　　者：马君义[1,2] 蔺彦斌[1,2] 蒋严妃[1] 王耀雪[1] 张继[1,2] MA Jun—yi;LIN Yan—bin;JIANG Yan—fei;WANG Yao—xue;ZHANG Ji(College of Life Science,Noahwest Normal University,Lanzhou 730070,China;Bioactive Products Engineering and Technology Research Center for Gansu Distinctive Plants,Lanzhou 730070,China)

机构地区：[1]西北师范大学,生命科学学院,甘肃兰州730070 [2]甘肃省特色植物有效成分制品工程技术研究中心,甘肃兰州730070

出　　处：《食品工业科技》2013年第19期77-79,共3页Science and Technology of Food Industry

基　　金：国家科技支撑计划项目(2012BAD20B00)

摘　　要：在25℃条件下分析了不同浓度阿拉伯胶(GA)溶液的流动性、触变性和动态粘弹性。结果表明:阿拉伯胶溶液是假塑性流体,浓度越大,剪切条件下越符合流变学的幂率模型;GA溶液的浓度越高,触变性越弱;0.05、0.10g/mL的GA溶液储能模量(G')和损耗模量(G″)无交点且G'>G″,表现为类似固态的粘弹性行为,0.20、0.30g/mL的GA溶液的G'和G″有交点,表明存在相的转化。The flowability,thixotropy and dynamic viscoelasticity were investigated for different concentrations of gum arabic(GA)under the condition of 25℃.The results showed that gum arabic solution was pseudoplastic fluid,the greater concentration,the better correlation to the the rheology of power-law modeI.Thixotropy weakened with increasing concentrations of GA solutions.The storage modulus(G')and loss modulus(G″)had no intersection point(G'〉G″)at the concentrations of 0.05g/mL and 0.10g/mL,which performed the solid-like viscoelastic behavior,G'and G″of GA solutions had a intersection point at the concentrations of 0.20g/mL and 0.30g/mL,which indicated a phase transformation.

关 键 词：阿拉伯胶 幂律模型 触变性 动态粘弹性 

分 类 号：TS201.1[轻工技术与工程—食品科学]