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Title: Evaluation of enzymatic hydrolyzed starches in discharge, discharge-resist and burn-out printing styles
Authors: El-Thalouth, I Abd
Ragheb, A A
Nassar, S H
Ibrahim, M A
Shahin, A A
Keywords: α-amylase;Burn-out printing;Cotton;Discharge printing;Discharge-resist printing;Enzyme treatment;Wool/polyester blend;Viscose/polyester/lucre blend
Issue Date: Jun-2013
Publisher: NISCAIR-CSIR, India
Abstract: Maize starch samples have been subjected to gelatinization at 70°C followed by enzymatic treatment using different concentrations of α-amylase enzyme (0.025, 0.050, 0.075 and 0.1 mL/50g starch) and then used in printing paste as thickener for discharge, discharge-resist and burn-out printing on cotton, wool/polyester and viscose/polyester/lucre fabrics. The results show that enzymatic treatment of maize starch converts the rheological properties of starch from thixotropic into pseudo-plastic. Increase in α-amylase enzyme concentration is accompanied by a decrease in the apparent viscosity. While enzyme-treated starches give better results when used as thickening agent in discharge-resist printing compared with sodium alginate, the opposite holds true in case of discharge printing. Enzyme-treated starches specially that prepared using 0.1 mL/50g starch could act successfully as thickening agent in burn-out printing of both wool/polyester and viscose/ polyester/lucre blends.
Page(s): 173-179
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.38(2) [June 2013]

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