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Bacteriocin-producing lactic acid bacteria as a probiotic potential from Thai indigenous chickens

Author

Listed:
  • H. Musikasang

    (Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Thailand)

  • N. Sohsomboon

    (Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Thailand)

  • A. Tani

    (Institute of Plant Science and Resources, Okayama University, Japan)

  • S. Maneerat

    (Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Thailand)

Abstract

Bacteriocin-producing lactic acid bacteria (LAB) were isolated and screened from the gastrointestinal tract (GIT) of Thai indigenous chickens. The bacteriocinogenic activities and the primary probiotic properties were determined. The bacteriocins produced by 14 strains of selected LAB displayed inhibitory activity against indicator strains after the supernatants were neutralized with NaOH in the following species: Lactobacillus sakei subsp. sakei JCM1157, Enterococcus faecalis VanB, Bacillus sp., and Listeria monocytogenes. The antagonistic acti-vity of selected LAB was inactivated or decreased after being treated with proteolytic enzymes (α-chymotrypsin and trypsin). CR5-1 strain exhibited the highest level of activity (5120 AU/ml) in the stationary phase against L. sakei subsp. sakei JCM1157 in MRS broth at 37°C. The nine isolates of selected LAB were investigated for primary probiotic properties. The survival of the nine isolates was found to decrease approximately by 3 log CFU/ml after passing through the gastrointestinal conditions. All isolates exhibited protein digestion on agar plates but no isolates showed the ability to digest starch and lipid. Most of them showed high susceptibilities to some antibiotics (penicillin G, tetracycline and erythromycin). Thirteen LAB strains producing bacteriocin with strongly inhibitory activity were identified as Lactobacillus salivarius and only one strain was identified by 16S rDNA sequence analysis as Lactobacillus agilis.

Suggested Citation

  • H. Musikasang & N. Sohsomboon & A. Tani & S. Maneerat, 2012. "Bacteriocin-producing lactic acid bacteria as a probiotic potential from Thai indigenous chickens," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 57(3), pages 137-149.
    • Handle: RePEc:caa:jnlcjs:v:57:y:2012:i:3:id:5568-cjas
    DOI: 10.17221/5568-CJAS
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