Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XIX
Written by Mioara Ancuţa DUMITRU, Ştefana JURCOANE
The leather manufacturing process produces annual tons of misspends being considered very harmful for nature. Solid waste generated in leather industry contains protein as main component. The biotechnological sector allows us to use this worthless material as microbial substrate for enzyme production. Those enzymes have multiple uses and can cover numerous industrial needs. This paper covers some potential applications in the agriculture sector as fertilizer. Leather hydrolysate results from bacterial conversion of leather proteins. The specific bacteria where obtained through isolation of the compostation of leather and incubated 48 hours into a minimal media. During the optimization process the maximum proteinase production was 1.5 U/ml and it was achieved after 120 hours of incubation at 35oC, using a minimal media and 0.6 shredded leather. Leather debris containing proteins and amino acids which can be applied as bio-growth increase by environmental secure technologies, and eventually in organic output production. The leather hydrolysate resulting from the microbial conversion of hide protein can be manipulated as organic nitrogen soil input.
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bacterial isolation
