Development of regression model for bacteriocin production from local isolate of Lactobacillus acidophilus MS1 using Box-Behnken design

M. Salman,M. Shahid,T. Sahar,S. Naheed,Mahmood-Ur-Rahman,M. Arif,M. Iqbal,A. Nazir

Published 2020 in Biocatalysis and agricultural biotechnology

ABSTRACT

Abstract Bacteriocins are antimicrobial peptides synthesized by lactic acid bacteria. These are well known for their anti-bacterial activity in fermented foods and extend the shelf-life and safety of food items. The optimum bacteriocin production was predicted from Lactobacillus acidophilus MS1 using Box-Behnken experimental design. The maximum bacteriocin activity titre of 2600AU/mL was observed with 30 °C, pH 6 and 18 h incubation time. The results derived from response surface methodology (RSM) regression equation indicated that the initial pH of the model system influencing stronger than other physical variables at 95% confidence level. Moreover, quadratic and interaction effects of these variables were also found significant. A monomeric peptide of 6.5 kDa was purified to 59.1-fold from crude sample using ion exchange and gel filtration chromatography. Purified peptide showed strong inhibitory activity against biofilm produced by Bacillus cereus, a food born pathogen. Box-Behnken design can be used for large scale production of bacteriocin from novel strain of Lactobacillus acidophilus MS1 that might be used as a preservative and non-allergic antibiotic in food as well as in pharmaceuticals.

PUBLICATION RECORD

  • Publication year

    2020

  • Venue

    Biocatalysis and agricultural biotechnology

  • Publication date

    2020-03-01

  • Fields of study

    Agricultural and Food Sciences, Chemistry

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

CITATION MAP

EXTRACTION MAP

CLAIMS

  • No claims are published for this paper.

CONCEPTS

  • No concepts are published for this paper.

REFERENCES

Showing 1-78 of 78 references · Page 1 of 1

CITED BY

Showing 1-34 of 34 citing papers · Page 1 of 1