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The influence of enzymatic treatment on wool fibre properties using PEG-modified proteases

Paper ID Volume ID Publish Year Pages File Format Full-Text
18117 42712 2007 7 PDF Available
Title
The influence of enzymatic treatment on wool fibre properties using PEG-modified proteases
Abstract

The main contribution of the presented work was to introduce the use of proteases modified with the soluble polymer polyethylene glycol (PEG) in the bio-finishing process of wool fibres, to target enzyme action to the outer parts of wool fibres, i.e. to avoid the diffusion and consequent destroying of the inner parts of the wool fibre structure, in the case of native proteases using.Different proteolytic enzymes from Bacillus lentus and Bacillus subtilis in native and PEG-modified forms were investigated and their influence on the modification of wool fibres morphology surface, chemical structure, as well as the hydrolysis of wool proteins, the physico-mechanical properties, and the sorption properties of 1:2 metal complex dye during dyeing were studied. SEM images of wool fibres confirmed smoother and cleaner fibre surfaces without fibre damages using PEG-modified proteases. Modified enzyme products have a benefit effect on the wool fibres felting behaviours (14%) in the case when PEG-modified B. lentus is used, without markedly fibre damage expressed by tensile strength and weight loss of the fibre. Meanwhile the dye exhaustion showed slower but comparable level of dye uptake at the end of the dyeing.

Keywords
Wool fibres; Proteolytic enzymes; Enzyme modification; Felting; Dye sorption; Protein hydrolysis; XPS-analysis; Fibre morphology
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The influence of enzymatic treatment on wool fibre properties using PEG-modified proteases
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 40, Issue 7, 1 June 2007, Pages 1705–1711
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us