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Effects of Carbon and Nitrogen Sources on Activity of Cell Envelope Proteinase Produced by Lactobacillus plantarum LP69 Cover

Effects of Carbon and Nitrogen Sources on Activity of Cell Envelope Proteinase Produced by Lactobacillus plantarum LP69

Open Access
|Jul 2019

Abstract

In present study, the effects of carbon sources (glucose, lactose, sucrose, galactose, maltose and soluble starch) and nitrogen sources (casein peptone, whey protein, soy peptone, yeast, tryptone, beef extract and peptone) on activity of cell envelope proteinases (CEP), specific activity, protein content, OD600 value and pH in MRS broth fermented by Lactobacillus plantarum LP69 were investigated by individual factor experiment. The results indicated that carbon and nitrogen sources have significant influence on the activity of CEP and specific activitys of L. plantarum LP69, glucose, maltose, casein peptone and peptone are superior to other selected carbon and nitrogen sources. The optimum concentrations of glucose, maltose, casein peptone and peptone for L. plantarum LP69 are 2%, 2%, 1% and 1%; the activity of CEP are 19.52U/mL, 21.13U/mL, 13.49U/mL and 20.61U/mL, respectively.

DOI: https://doi.org/10.2478/aucft-2019-0002 | Journal eISSN: 2344-150X | Journal ISSN: 2344-1496
Language: English
Page range: 11 - 18
Published on: Jul 18, 2019
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2019 Fangfang Cheng, He Chen, Ni Lei, Meng Zhang, Hongchang Wan, published by Lucian Blaga University of Sibiu
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.