International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2022 - IJCMAS--ICV 2022: 95.28 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020] For more details click here

Login as a Reviewer

See Guidelines to Authors
Current Issues
Download Publication Certificate

Original Research Articles                      Volume : 9, Issue:3, March, 2020

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(3): 2974-2983

Isolation of Protease Producing Bacteria from Soil and Characterization of the Protease
Ankita Chakraborty and Srabani Karmakar*
Department of Biotechnology, Techno India University, West Bengal, EM4/1, Sector V, Salt Lake, Kolkata 700064, India
*Corresponding author

Microbes are famous source of industrially important enzymes which can easily be modified by biotechnological methods. Proteases are group of commercially important enzymes which can cleave proteins into smaller fragments. This enzymes are widely used at an industrial scale for processing of various foods, cheese production, in leather industry etc. Proteases also serve as signalling molecules. Soil is a rich and biodiverse source of a huge number of microorganisms. The present study is based on the characterization of the protease producing bacteria from the soil present outside and adjacent areas of a sweetshop in Burdwan. Screening of the bacteria was done by employing skim milk agar plating technique at 37°C and observed after 24 hours. Proteolytic activity of the crude protease extract from the bacteria was detected by using azocasein as substrate. Two bacteria was initially screened; one was giving white colony and the other was giving yellow colony. White colony bacteria showed to give higher activity. The optimum pH for the protease activity was found to be 8. 5 for both bacteriabut the optimum temperature was 37°C for yellow and 60°C for white. Bacteria isolated were coccus shaped and Gram-positive in nature. The isolated white bacteria was identified by 16s rDNA sequencing as Staphylococcus species.

Keywords: Biotechnological, Proteases, Proteolytic, colony bacteria

Download this article as Download

How to cite this article:

Ankita Chakraborty and Srabani Karmakar. 2020. Isolation of Protease Producing Bacteria from Soil and Characterization of the Protease.Int.J.Curr.Microbiol.App.Sci. 9(3): 2974-2983. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.