alexa Strain Improvement of Brevibacillus borostelensis R1 for Optimization of α-Amylase Production by Mutagens | OMICS International | Abstract
ISSN: 1948-5948

Journal of Microbial & Biochemical Technology
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Research Article

Strain Improvement of Brevibacillus borostelensis R1 for Optimization of α-Amylase Production by Mutagens

K Suribabu1*, T Lalitha Govardhan1 and KPJ Hemalatha2

1PG Department of Microbiology and Research Centre, Dr. Lankapalli Bullayya Post-graduate College, AP, India

2Department of Microbiology, Andhra University, AP, India

*Corresponding Author:
Dr. K Suribabu
PG Department of Microbiology and Research Centre
Dr. Lankapalli Bullayya Post-graduate College
Visakhapatnam-530 013, A.P, India
Tel: 9440788795
E-mail: [email protected]

Published date: January 21, 2014; Published date: March 06, 2014; Published date: March 11, 2014

Citation: Suribabu K, Lalitha Govardhan T, Hemalatha KPJ (2014) Strain Improvement of Brevibacillus borostelensis R1 for Optimization of a-Amylase Production by Mutagens. J Microb Biochem Technol 6: 123-127. doi:10.4172/1948-5948.1000132

Copyright: © 2014 Suribabu K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Physical and chemical mutagens are promising and are used for screening of high yielding strains. The exponential increase in the application of amylases in various fields has placed stress and demand in both qualitative improvement and quantitative enhancement through strain improvement. Ultraviolet light exerts its mutagenic effect by exciting electrons in molecules. The potent UV mutants which showed more than 20 mm zone of starch hydrolysis were screened and selected at 42% of survival time at 80minutes of exposure. The wild strain with fixed parameters yielded (3000 U/ml). The major findings of the strain improvement were out of ten mutants isolated, two (UV-3 and UV-10) showed 3000-4000 U/ml of amylase activity. The % of survival of Brevibacillus borstelensis R1 in Pikovskaya’s medium was 25.75% at 120 minutes of exposure. Ten mutants (HNO2-10, HNO2-30, EMS-4, EtBr-40, EtBr-50, Acr-1, Acr-20, Acr-30, Acr-4 and 5′-FU-50) out of fifty mutants isolated showed 3000-4300U/ml of amylase activity, which was higher than the wild strain. The potent Bacillus species screened from marine water was Brevibacillus borstelensis R1. The α-amylase was found to be useful in bakery, food, fodder for poultry, automation dishwashing and laundry industries.

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