EFFECT OF REACTION CONDITIONS ON THE HYDROLYSIS OF WOOL KERATINS
Journal Title: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork - Year 2017, Vol 0, Issue 1
Abstract
Every year millions of tons of keratinous wastes are generated worldwide, therefore from an economic and environmental point of view, it is worthwhile developing processes to use and reuse these resources. Many different procedures and methods can be applied to obtain keratin hydrolysates. Microwave heating is based upon the ability of a particular substance to absorb microwave energy and convert the electromagnetic energy to heat (kinetic energy). An extension of this is application in the field of proteomics (the study of proteins and in particular their struc¬ture and function). Large complex proteins can be broken into smaller parts by using microwave heating. This work aimed to perform microwave-assisted hydrolysis of wool keratin wastes in different experimental conditions, and compare it with a conventional method of alkaline hydrolysis, in order to study the efficiency of the treatment induced by this field on the reaction products, subsequently analyzed by specific methods. It was studied the influence of the reaction conditions (reaction time and working recipe) on the keratin hydrolysis yield, and also were analysed the structural changes induced by hydrolysis. A significant reduction of reaction time concurrent with a higher hydrolysis yield was obtained by microwave hydrolysis regardless of the alkali mixtures used; better results were obtained for 60 min treatment. IR analysis performed highlight the structural modifications induced by hydrolysis conditions, the process carried out by means of microwaves leading to a lower degradation of hydrolysis products.
Authors and Affiliations
Tudorel BĂLĂU MÎNDRU, Iulia BĂLĂU MÎNDRU
Keywords
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