Optimization of the thermostable alkaline and Ca-dependent α−amylase production from Bacillus paralicheniformis by statistical modeling

A novel amylolytic enzyme producing thermoalkaliphilic bacterium, the source of industrially used enzymes was isolated. Isolated strain was identified by morphological, physio-biochemical tests and the 16S rRNA gene sequence analysis. The optimal conditions of enzyme activity were determined. For hi...

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Published in:Journal of the Serbian Chemical Society 2019, Vol.84 (10), p.1093-1104
Main Authors: Bekler, Fatma, Yalaz, Seçil, Güven, Reyhan, Güven, Kemal
Format: Article
Language:English
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bacillus paralicheniformis
optimization
response surface methodology
α-amylase
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container_issue 10
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container_title Journal of the Serbian Chemical Society
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creator Bekler, Fatma
Yalaz, Seçil
Güven, Reyhan
Güven, Kemal
description A novel amylolytic enzyme producing thermoalkaliphilic bacterium, the source of industrially used enzymes was isolated. Isolated strain was identified by morphological, physio-biochemical tests and the 16S rRNA gene sequence analysis. The optimal conditions of enzyme activity were determined. For higher ?-amylase production, the variables such as yeast extract, starch, CaCl2, (NH4)2SO4, NaCl and MgSO4 in the ?-amylase production medium, the temperature and pH were screened by Plackett?Burman design and optimised using response surface methodology (RSM). The optimal conditions were found to be 0.15 g/L for starch, 0.15 mg/L for CaCl2 and 60?C for temperature. By using RSM model, amylase production increase was achieved sevenfold. It is showed that this method can be utilised to optimize ?-amylase production in athermophilic bacteria such as Bacillus paralicheniformis. nema
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subjects bacillus paralicheniformis
optimization
response surface methodology
α-amylase
title Optimization of the thermostable alkaline and Ca-dependent α−amylase production from Bacillus paralicheniformis by statistical modeling
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