Cleaner techniques for the preservation of raw goat skins |
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| Institution: | 1. Department of Leather Processing Division, Central Leather Research Institute, Adyar, Chennai - 600 020, India;2. Microbiology Laboratory, Central Leather Research Institute, Adyar, Chennai - 600 020, India;3. Chemical Physics Laboratory, Central Leather Research Institute, Adyar, Chennai - 600 020, India;1. Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand;2. Halal Institute, Prince of Songkla University, Department of Material Product Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;3. Department of Food Science, College of Food and Agriculture, United Arab Emirates University, Al-Ain, 15551, United Arab Emirates;1. College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China;2. Engineering Research Center for Nanomaterials, Henan University, Kaifeng 475004, PR China;1. College of Resources & Environment, Shaanxi University of Science & Technology, Xi''an 710021, Shaanxi Province, PR China;2. Key Laboratory of Amxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi''an 710021, Shaanxi Province, PR China;3. College of Foreign Languages and Communications, Shaanxi University of Science and Technology, Xi''an 710021, Shaanxi Province, PR China;1. National Engineering Laboratory for Clean Technology of Leather Manufacture, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, 610065, China;2. Universitat Politècnica de Catalunya, Igualada School of Engineering (EEI), Igualada, Barcelona, Spain;1. Center for Human Resource Development, CSIR-Central Leather Research Institute, Adyar, Chennai, 600 020, India;2. Chemical Engineering Department, CSIR-Central Leather Research Institute, Adyar, Chennai, 600 020, India;3. Leather Process Technology Department, CSIR-Central Leather Research Institute, Adyar, Chennai, 600 020, India;1. College of Resource & Environment, Shaanxi University of Science & Technology, Xi''an 710021, China;2. Key Laboratory of Auxiliary Chemical and Technology of Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi''an 710021, China |
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| Abstract: | As the popular salt curing system is considered detrimental to the environment, a search for safer alternative systems has been a top priority research in the area of leather science. The ill-effects of sodium chloride on the environment and eco-system need no emphasis. Hence there is an urgent need for the development and adoption of a viable cleaner curing system. In the present study, a short-term preservation technique using silica gel has been studied and standardized. The possibility of using silica gel in place of salt as a curing agent alone and in combination with a suitable biocide was studied at an ambient temperature of 31°C. The preservation efficacy of the methods was assessed by various parameters such as moisture content, total extractable nitrogen, and bacterial count. The layer wise moisture content was determined using a NMR micro-imaging technique. The effect of the new curing methods on the fibre structure of treated skins was assessed using scanning electron microscopic (SEM) studies. The pollution load generated in the processing of the skins treated using the new techniques is compared with that for salt cured stock. The results show that the cleaner preservation techniques developed were as efficient as salt curing for the preservation of skins. The new curing methods did not pose any problem either in soaking or in the leather manufacturing processes. The methods developed are found to be effective and viable options for combatting the pollution problems of chloride and total dissolved solids (TDS). |
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