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首页> 外文期刊>The Journal of the Textile Institute >Reaction kinetics study of a-amylase in the hydrolysis of starch size on cotton fabrics
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Reaction kinetics study of a-amylase in the hydrolysis of starch size on cotton fabrics

机译：棉织物上α-淀粉酶水解淀粉上浆的反应动力学研究

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摘要

The hydrolysis reaction kinetics of α-amylase on the starch size of cotton fabrics followed the first-order reaction in the initial stage that α-amylase hydrolyzed on the surface of cotton fabrics; desizing ratios of more than 95% were obtained in the initial stage, which are acceptable, and the hydrolysis time for the initial stage shortened sharply as the temperature increased. The increase of α-amylase dosage enhanced the reaction rate constant as well as speeded up the first-order reaction rate in the initial stage, both treated at the same treatment temperature. The hydrolysis action of α-amylase on starch size on the surface of cotton fabrics speeded up significantly as the temperature increased. Also, the treatment time needed to obtain an acceptable desizing ratio (＞95%) shortened sharply from 6 to 1/12 h as the treatment temperature increased from 20 to 100 ℃.
机译：α-淀粉酶对棉织物淀粉大小的水解反应动力学遵循一阶反应，即α-淀粉酶在棉织物表面水解的初始阶段。在初始阶段获得大于95％的脱浆率，这是可以接受的，并且随着温度的升高，初始阶段的水解时间急剧缩短。 α-淀粉酶剂量的增加提高了反应速率常数，并加快了初始阶段的一级反应速率，两者均在相同的处理温度下进行处理。随着温度的升高，α-淀粉酶对棉织物表面淀粉大小的水解作用明显加快。而且，随着处理温度从20℃升高到100℃，获得可接受的退浆率（＞ 95％）所需的处理时间从6小时急剧缩短至1/12 h。

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  • 来源
    《The Journal of the Textile Institute》 |2014年第2期|203-208|共6页
  • 作者

    Kang-li Fu; Da-nian Lu;

  • 作者单位

    Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai, China;

    Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    α-amylase; cotton fabrics; desizing; kinetics;

    机译：α-淀粉酶;棉织物;退浆动力学;

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