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Enzymatic functionalization of protein fibers to confer cationic dye absorption

机译：蛋白质纤维的酶促功能化赋予阳离子染料吸收

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摘要

Protein fibers such as wool are most readily dyed with a wide range of dye classes under acid and neutral conditions due to the numerous reactive functional groups present. The only dye class that lacks the ability to absorb is cationic dye. In this work, enzymatic functionalization of protein fiber is performed prior to dyeing to posses the ability to adsorb cationic dye (C.I. Basic Violet 3) from water. A natural compound, caffeic acid, to provide an available carboxylic group, was grafted on the fiber enzymatically using laccase. The electrochemical method and oxygen consumption study confirmed the oxidation reaction of caffeic acid through laccase. FTIR analysis provided supporting evidence of phenol compound being grafted on the fiber. Function-alized protein fiber was then used in experiment on dyeing with cationic dye in an exhaust method. Results of the enzymatic functionalization of protein fiber on dyeing kinetic was investigated through the calculation of dye absorption rate and confirmed an increasing of exhaustion and fixation compared to the untreated fiber within a shorter time at low temperatures.
机译：由于存在大量的反应性官能团，蛋白质纤维（例如羊毛）最容易在酸性和中性条件下用多种染料类别进行染色。唯一缺乏吸收能力的染料类别是阳离子染料。在这项工作中，在染色之前先进行蛋白质纤维的酶促官能化，以具有从水中吸附阳离子染料（C.I.碱性紫3）的能力。使用漆酶将天然化合物咖啡酸提供了可用的羧基，并以酶促方式接枝到了纤维上。电化学方法和耗氧量研究证实了咖啡酸通过漆酶的氧化反应。 FTIR分析提供了酚类化合物接枝到纤维上的支持证据。然后将功能改性的蛋白纤维用于排气法用阳离子染料染色的实验中。通过计算染料吸收率，研究了蛋白纤维对染色动力学的酶促功能化结果，并证实与未处理的纤维相比，在低温下，短时间内的吸收和固着性增加。

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  • 来源
    《Melliand international》 |2012年第1期|p.45-47|共3页
  • 作者

    K.M. Gaffar Hossain; Giinter Grabher; Tzanko Tzanov;

  • 作者单位

    V-Trion GmbH, Institute for Textile Research,Hohenems/Austria,Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Technical University of Catalonia, Barcelona/Spain;

    V-Trion GmbH, Institute for Textile Research,Hohenems/Austria;

    V-Trion GmbH, Institute for Textile Research,Hohenems/Austria;

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