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Production of Value-Added Products from Meat Processing Cellulosic Waste

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  057032,  2005 ASAE Annual Meeting . (doi: 10.13031/2013.19659) @2005
Authors:   Hector J. Cumba, Danielle Bellmer
Keywords:   frankfurter/sausage, cellulosic spent casing waste, cellulase hydrolysis, cellulase production, fermentation, bubble-column reactor

Large quantities of cellulosic waste are being produced and dumped in landfills every year by the meat processing industry worldwide. This waste can be categorized as organic waste and can be easily utilized for the production of beneficial byproducts for the food industry. This research focuses on the bioconversion of spent casing solid waste from frankfurter/sausage meat processing industries, which is composed of more than 95% cellulosic material. Two practical processes were evaluated to reuse the spent casing waste into valued-added products, first the production of glucose by enzymatic hydrolysis using commercial cellulase enzymes and second, the fermentation of spent casing waste for the production of cellulase enzymes with the fungi Trichoderma reseei RUT-C30. Results among the six commercial cellulase enzymes tested showed a significant variation in the initial rate of glucose produced, with the most efficient showing more than 80% degradation after 24 hrs at 50 C and enzyme loading of 20 IFPU/g casing. Results from the cellulase production in a 2-L bench scale bubble-column reactor have shown a cellulase production of 1.3 IFPU/ml after 7 days. A comparison of the produced cellulase enzyme with commercial cellulase enzyme demonstrated identical enzymatic characteristics and hydrolytic power with spent casing waste and pure cellulosic paper.

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