Collagen hydrolysate extraction from chromed leather waste for polymeric film production

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作者：
机构：
[1] Scopel, B.S.
[2] Lamers, D.L.
[3] Matos, E.
[4] Baldasso, C.
[5] Dettmer, A.
来源：
Scopel, B.S. (bianca.scopel1@gmail.com) | 1600年 / American Leather Chemists Association卷 / 111期
关键词：
Alkaline hydrolysis - Biodegradable film - Biodiesel production - Collagen hydrolysate - Innovative approaches - Materials production - Nonrenewable sources - Synthetic polymers;
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摘要：
The generation of hazardous wastes and the overuse of nonrenewable sources in polymeric materials production are two major concerns for researchers worldwide. In this paper, an innovative approach to changing chromed leather waste (CLW) into a raw material for polymeric film production was studied. Collagen hydrolysate was extracted from CLW through alkaline hydrolysis. Time, temperature, agitation speed, type and mass of alkalinizing agent were tested. The optimum condition for collagen hydrolysate production (the one that results in a high protein and low chromium content) was determined. According to statistical analysis, hydrolysis performed for 6 h using a proportion of 4 g of MgO for each 50 g of CLW and 250 ml of water at 70°C and 180 rpm of agitation speed led to the best protein/chromium ratio in the collagen hydrolysate (TKN: 2, 185.7 mg/L, Cr:
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