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Abstract

STUDY OF LEATHER DYING PROCESS USING CITRUS LIMON PEEL EXTRACT WITH COMMERCIALPROTEASE ENZYME AND ITS ANTIMICROBIAL ACTIVITY

K. Gayathri, M.Phil and *Dr. J. Thirumagal

ABSTRACT

Dyeing is an important process in the leather industry, which employs many synthetic colorants. The studies on process parameters of enzymatic treatment such as pH, temperature and duration on the exhaustion of the dye, levelness of dyeing, shade brightness, dye penetration and color intensity have been studied and the conditions are optimized. The change in shades due to enzymatic treatment has been quantified by reflectance measurements and compared with the visual assessment data. There is significant change in color due to enzymatic treatment as noticed by reflectance measurements and visual assessment data. The overall fastness of the leathers treated with enzyme is comparable with those obtained by control leathers. The current activity in the area of leather processing is shifting towards the design and utilization of cleaner and softer technology like enzymatically enhanced processes. The enzymes are successfully employed for the better quality leather production with less pollution impact and also for the treatment of waste discharged from the industry. It is very essential need to today polluted world. This process is mainly designed to save our environment. Antimicrobial activity is also done with the citrus limon extract for the three bacterial stains namely Bacillus subtilis (MTCC 441), Staphylococcus aureus (MTCC 3940), Salmonella typhi (MTCC-734).

Keywords: Dying, Protease, Citrus limon, Bacillus subtilis, Staphylococcus aureus, Salmonella typhi.


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