Cite this paper:
JIN Yulan, WANG Yurong, XIAO Lin, LIN Xiukun. Characterization of proteases from Planomicrobium sp. L-2 isolated from the gastrointestinal tract of Octopus variabilis (Sasaki)[J]. Journal of Oceanology and Limnology, 2016, 34(3): 559-566

Characterization of proteases from Planomicrobium sp. L-2 isolated from the gastrointestinal tract of Octopus variabilis (Sasaki)

JIN Yulan1, WANG Yurong1, XIAO Lin1, LIN Xiukun2
1 College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China;
2 Department of Pharmacology, Capital Medical University, Beijing 100069, China
Abstract:
A crude protease produced from Planomicrobium sp. L-2 is described, and its effectiveness as an additive in liquid detergent evaluated. We isolate the protease-producing Planomicrobium sp. L-2 from the gastrointestinal tract of Octopus variabilis. At least three caseinolytic protease clear bands were observed in zymogram analysis. The crude alkaline protease was highly tolerant of a pH range from 7.0 to 9.0, and temperatures to 50℃ after incubation for 1 h. Proteolytic enzymes were stable towards three surfactants (5% Tween 80, 1% Triton X-100 and 0.05% SDS) and an oxidizing agent (1% hydrogen peroxide), in addition to being highly stable and compatible with popular commercial laundry powered detergent brands available in China. Our study demonstrates the potential these proteases have for development into novel classes of detergent additive. This study also suggests that the gastrointestinal tract of Octopus variabilis may be a rich source of commercially valuable strains of enzyme.
Key words:    alkaline protease|detergent|characterization|Planomicrobium   
Received: 2015-02-03   Revised: 2015-03-27
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Articles by JIN Yulan
Articles by WANG Yurong
Articles by XIAO Lin
Articles by LIN Xiukun
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