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      • Metallo-collagenase production by Arthrobacter creatinolyticus KP015744

        Savita A. Kate,Madhuri Sahasrabudhe,Archana Pethe Techno-Press 2022 Advances in environmental research Vol.11 No.1

        Amongst 27 isolates from deteriorated leather samples, Arthrobacter creatinolyticus KP015744 zzx28 was found to be an efficient collagenase producer. Collagenase production of 13.33 µmoles/min was shown at an optimum temperature at 37℃ after 72h and at pH 7.5 by using 2 ml/dL inoculum in 10 mg/ml collagen peptide type I as a substrate. In presence of Hg<sup>2+</sup>, EDTA and 𝛽-mercaptoethanol the collagenase production by the isolate was strongly inhibited however Fe<sup>2+</sup>, Ca<sup>2+</sup>and DMSO enhanced production of the enzyme. Specific activity was found to be 19.46×10<sup>3</sup> U/mg and molecular weight 66 kD by SDS PAGE. Isolate also has potential to hydrolyze keratin which is another important protein found in leather. Experimental results propose that collagenase can be effectively used as a tool for collagen and keratin rich solid waste treatment.

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