Bio-preparation of cotton fabrics

This study attempted to introduce the bio-processes in the conventional sco uring and bleaching preparation of cotton. The scouring with two types of p ectinases, acting under acidic and alkaline conditions respectively, was as efficient as the chemical process in terms of obtained adequate water abso rbency of the fabrics. The necessity of surfactants application in scouring was outlined. Bleaching of the fabrics was performed with hydrogen peroxid e, which was enzymatically produced by glucose oxidase during oxidation of glucose. The aeration plays an important role in the enhancement of the enz yme reaction, so that the quantity of generated peroxide is sufficient to o vercome the stabilizing effect of the glucose and protein in the subsequent bleaching. A closed-loop process reusing starch containing desizing baths in a single step scouring/bleaching operation with enzyme-generated peroxid e was performed. (C) 2001 Elsevier Science Inc. All rights reserved.