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  • Title: Isolation and characterization of different strains of Bacillus licheniformis for the production of commercially significant enzymes.
    Author: Ghani M, Ansari A, Aman A, Zohra RR, Siddiqui NN, Qader SA.
    Journal: Pak J Pharm Sci; 2013 Jul; 26(4):691-7. PubMed ID: 23811444.
    Abstract:
    Utilization of highly specific enzymes for various industrial processes and applications has gained huge momentum in the field of white biotechnology. Selection of a strain by efficient plate-screening method for a specific purpose has also favored and boosted the isolation of several industrially feasible microorganisms and screening of a large number of microorganisms is an important step in selecting a potent culture for multipurpose usage. Five new bacterial isolates of Bacillus licheniformis were discovered from indigenous sources and characterized on the basis of phylogeny using 16S rDNA gene analysis. Studies on morphological and physiological characteristics showed that these isolates can easily be cultivated at different temperatures ranging from 30°C to 55°C with a wide pH values from 3.0 to 11.0 All these 05 isolates are salt tolerant and can grow even in the presences of high salt concentration ranging from 7.0 to 12.0%. All these predominant isolates of B. licheniformis strains showed significant capability of producing some of the major industrially important extracellular hydrolytic enzymes including α-amylase, glucoamylase, protease, pectinase and cellulase in varying titers. All these isolates hold great potential as commercial strains when provided with optimum fermentation conditions.
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