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Viscoelasticity of Oxidised Starch and Low Methoxy Pectin in the Presence of Glucose Syrup

机译:在葡萄糖糖浆存在下氧化淀粉和低甲氧基果胶的粘弹性

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摘要

The structural properties of mixtures with pectin, oxidised starch and glucose syrup were investigated using small deformation dynamic oscillation. The composition of the mixture, pH and temperature course of analysis were designed to imitate the development of confectionery products. In the absence of added calcium, preparations of low methoxy pectin with glucose syrup form viscous solutions, which remain crystal-free at subzero temperatures. Samples of oxidised starch and glucose syrup. on the other hand, exhibit solid-like behavior due to the crystalline nature of the amylose-like helices. Mixtures of the two polyssacharides with the co-solute show clearly the phase inversion from liquid to solid-like behavior with increasing amounts of starch in the formulation. The transformation is reflected in the textural properties of samples which vary from thick solutions to firm gels. The viscoelasticity of the system can be modified further by the introduction of high methoxy pectin. 1hus preparations of high methoxy pectin and glucose syrup form rubbery gels whose amorphous nature undergoes a glass transition during cooling. The energetic requirement for the formation of the biological rubber was in good agreement with corresponding data in the literature.
机译:采用小变形动力振荡研究了用果胶,氧化淀粉和葡萄糖糖浆的混合物的结构性质。设计了混合物,pH和温度分析的组成,旨在模仿糖果产品的发展。在没有添加的钙的情况下,用葡萄糖糖浆形成粘性溶液的低甲氧基果胶的制剂,其在亚零温度下保持无晶体。氧化淀粉和葡萄糖糖浆的样品。另一方面,由于直链淀粉样螺旋的结晶性质,表现出固体的行为。具有共溶质的两种多层accysacharides的混合物明显地将来自液体的相倒置与制剂中的淀粉量增加的淀粉含量相似。转化反映在样品的纹理性质中,从厚的溶液变化到坚固的凝胶。通过引入高甲氧基果胶,可以进一步修复系统的粘弹性。 1HUS制剂高甲氧基果胶和葡萄糖糖浆形成橡胶凝胶,其无定形性在冷却过程中经历玻璃过渡。形成生物橡胶的能量要求与文献中的相应数据吻合良好。

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  • 作者

    S. Kasapis;

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  • 年度 1999
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  • 原文格式 PDF
  • 正文语种 eng
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