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Pasting, Theological properties and gelatinization kinetics of tapioca starch with sucrose or glucose

机译:木薯淀粉与蔗糖或葡萄糖的糊化,流变学性质和糊化动力学

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摘要

Effects of sugars (sucrose and glucose) on the pasting, Theological and thermal properties of tapioca starch (TS) were studied. Rapid visco-analyser (RVA) and differential scanning calorimetry (DSC) showed that pasting and gelatinization temperature of TS increased with increased sugar concentration in the order of sucrose > glucose. Peak, breakdown, final and setback viscosities tended to increase with increased sugar content. Rheological parameters calculated from Herschley-Bulkley model showed sugar addition increased the yield stress and consistency coefficient, while decreased the thixotropy of TS gels. Loss tangent determined from dynamic viscoelastic tests revealed that sugars increased the solid-like characteristics of TS gels. Kinetics analysis showed E_a raised and rate constants declined in the presence of sugars, suggesting the same sugar effect as the experiments of RVA and DSC. And thus kinetics analysis could provide new evidences for the influence of sugars on starch gelatinization.
机译:研究了糖(蔗糖和葡萄糖)对木薯淀粉(TS)的糊化,流变和热学性质的影响。快速粘度分析仪(RVA)和差示扫描量热法(DSC)显示TS的糊化和糊化温度随糖浓度的增加而增加,依次为蔗糖>葡萄糖。糖含量增加时,峰值粘度,分解粘度,最终粘度和倒退粘度趋于增加。根据Herschley-Bulkley模型计算的流变参数表明,添加糖增加了屈服应力和稠度系数,同时降低了TS凝胶的触变性。由动态粘弹性测试确定的损耗角正切表明,糖增加了TS凝胶的固体状特征。动力学分析表明,在糖存在下,E_a升高而速率常数下降,表明糖作用与RVA和DSC实验相同。因此动力学分析可以为糖对淀粉糊化的影响提供新的证据。

著录项

  • 来源
    《Journal of food engineering》 |2013年第2期|255-261|共7页
  • 作者单位

    State Key Laboratory of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China,College of Food and Bioengineering, Henan University of Science and Technology, 471003 Luoyang, Henan, China;

    State Key Laboratory of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China,School of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China;

    College of Food and Bioengineering, Henan University of Science and Technology, 471003 Luoyang, Henan, China;

    School of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    activation energy; non-isothermal kinetics; reaction order; viscoelasticity; viscosity;

    机译:活化能;非等温动力学;反应顺序粘弹性黏度;

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