Characterization of mesentericin ST99, a bacteriocin produced by Leuconostoc mesenteroides subsp. dextranicum ST99 isolated from boza

Journal of Industrial Microbiology & Biotechnology
Svetoslav Dimitrov Todorov, L M Dicks

Abstract

Lactic acid bacteria isolated from Boza, a cereal-fermented beverage from Belogratchik, Bulgaria, were screened for the production of bacteriocins. With the first screening, 13 of the 52 isolates inhibited the growth of Listeria innocua and Lactobacillus plantarum. The cell-free supernatant of one of these strains, classified as Leuconostoc mesenteroides subsp. dextranicum ST99, inhibited the growth of Bacillus subtilis, Enterococcus faecalis, several Lactobacillus spp., Lactococcus lactis subsp. cremoris, Listeria innocua, Listeria monocytogenes, Pediococcus pentosaceus, Staphylococcus aureus and Streptococcus thermophilus. Clostridium spp., Carnobacterium spp., L. mesenteroides and Gram-negative bacteria were not inhibited. Maximum antimicrobial activity, i.e. 6,400 arbitrary units (AU)/ml, was recorded in MRS broth after 24 h at 30 degrees C. Incubation in the presence of protease IV and pronase E resulted in loss of antimicrobial activity, confirming that growth inhibition was caused by a bacteriocin, designated here as mesentericin ST99. No loss in activity was recorded after treatment with alpha-amylase, SDS, Tween 20, Tween 80, urea, Triton X-100, N-laurylsarcosin, EDTA and phenylmethylsulfonylfluoride. Mesentericin ST99...Continue Reading

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Citations

Aug 15, 2014·Critical Reviews in Food Science and Nutrition·Vandana BaliJohn F Kennedy
Jun 8, 2014·Probiotics and Antimicrobial Proteins·Aline Teodoro de PaulaAna Lúcia Barretto Penna
Nov 21, 2007·International Journal of Food Microbiology·Luca Settanni, Aldo Corsetti
Oct 6, 2012·Animal Science Journal = Nihon Chikusan Gakkaihō· WulijideligenTaku Miyamoto
Apr 20, 2016·Frontiers in Microbiology·Kevin EganPaul D Cotter
Nov 28, 2018·Korean Journal for Food Science of Animal Resources·In-Chan HwangDae-Kyung Kang
Oct 10, 2007·Journal of Applied Microbiology·S D TodorovL M T Dicks
Mar 16, 2021·Probiotics and Antimicrobial Proteins·Sungmin JungSvetoslav Dimitrov Todorov

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