Production, purification and characterization of bacteriocin from Lactobacillus murinus AU06 and its broad antibacterial spectrum

To study the production, purification and characterization of bacteriocin from Lactobacillus murinus AU06 isolated from marine sediments and its broad spectrum of inhibition against fish pathogens. The selected strain was used in production, purification and characterized of bacteriocin. In addition...

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Bibliographic Details
Published in:Asian Pacific journal of tropical biomedicine 2014-05, Vol.4 (Suppl 1), p.S305-S311
Main Authors: Elayaraja, Sivaramasamy, Annamalai, Neelamegam, Mayavu, Packiyam, Balasubramanian, Thangavel
Format: Article
Language:English
Subjects:
Antibacterial
Bacteriocin
Lactobacillus murinus
Microbiology
Pathogen
Purification
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Summary:To study the production, purification and characterization of bacteriocin from Lactobacillus murinus AU06 isolated from marine sediments and its broad spectrum of inhibition against fish pathogens. The selected strain was used in production, purification and characterized of bacteriocin. In addition, purified bacteriocin was tested for its antimicrobial activity against fish pathogens. In the present study, the bacteriocin production was found to be higher at 35 °C, pH 6.0 and was purified to 4.74 fold with 55. 38 U/mg of specific activity with the yield of 28.92%. The molecular weight of the purified bacteriocin was estimated as 21 kDa. The purified bacteriocin exhibited complete inactivation of antimicrobial activity when treated with proteinase K, pronase, chymotrypsin, trypsin, pepsin and papain. The purified bacteriocin exhibited broad inhibitory spectrum against both Gram positive and negative bacteria. It is concluded that the ability of bacteriocin in inhibiting a wide-range of pathogenic bacteria is of potential interest for food safety and may have future applications in food preservative.
ISSN:2221-1691
2588-9222
DOI:10.12980/APJTB.4.2014C537