Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza

Bacteriocin ST712BZ (14.0kDa in size) inhibits the growth of Lactobacillus casei,Escherichia coli, Pseudomonas aeruginosa,Enterococcus faecalis, Klebsiella pneumoniae and Lactobacillus curvatus. Growth of strain ST712BZ in BHI, M17, soy milk and molasses was similar to growth in MRS, with optimal ba...

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Main Authors: Svetoslav D. Todorov, Leon M.T. Dicks
Format: Article
Language:English
Published: Sociedade Brasileira de Microbiologia 2007-03-01
Series:Brazilian Journal of Microbiology
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100034
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spelling doaj-25e39c0478d1407bbe15c23276d574442020-11-24T21:57:00ZengSociedade Brasileira de MicrobiologiaBrazilian Journal of Microbiology1517-83821678-44052007-03-0138116617210.1590/S1517-83822007000100034Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de bozaSvetoslav D. TodorovLeon M.T. DicksBacteriocin ST712BZ (14.0kDa in size) inhibits the growth of Lactobacillus casei,Escherichia coli, Pseudomonas aeruginosa,Enterococcus faecalis, Klebsiella pneumoniae and Lactobacillus curvatus. Growth of strain ST712BZ in BHI, M17, soy milk and molasses was similar to growth in MRS, with optimal bacteriocin production (12800AU/mL) recorded in MRS after 24h. The same level of bacteriocin production (12800AU/mL) was recorded in MRS broth with an initial pH of 6.5, 6.0 and 5.5. However, MRS broth (pH 6.5) supplemented with 1mM EDTA, yielded only 6400AU/mL. Low levels of bacteriocin activity were recorded in MRS broth with an initial pH of 5.0 and 4.5. Of all media compositions tested, MRS supplemented with tryptone (20.0g/L), glucose (20.0 to 40.0g/L), mannose (20.0g/L), vitamin B12, or vitamin C yielded 12800AU/mL. Glycerol concentrations of 1.0g/L and higher repressed bacteriocin production. Maximal bacteriocin activity (25600AU/mL) was recorded in MRS supplemented with Vit. B1 or DL-6,8-thioctic acid.<br>A bacteriocina ST712BZ produzida par Lactobacillus pentosus (peso molecular de 14,0kDa) inibe o crescimento de Lactobacillus casei,Escherichia coli, Pseudomonas aeruginosa,Enterococcus faecalis, Klebsiella pneumoniae e Lactobacillus curvatus. O crescimento de L. pentosus ST712BZ em BHI, M17, leite de soja e melaços foi semelhante ao observado em MRS, registando-se a produção máxima de bacteriocina (12800UA/mL) em MRS após 24 h. Observou-se o mesmo nível de produção de bacteriocina (12800UA/mL) em caldo MRS com pH inicial de 6,5, 6,0 e 5,5. No entanto, em caldo MRS (pH 6,5) suplementado com 1 mM de EDTA a produção apenas atingiu 6400UA/mL. Os níveis de atividade bacteriocinogênica detectados em caldo MRS com um pH inicial de 5,0 e 4,5 foram baixos. De todas as fórmulas de meios de cultura testadas a que apresentou a atividade máxima 12800UA/mL foi MRS suplemento de triptona (20,0g/L), glicose (20,0 e 40,0 g/L), manose (20.0 g/L), vitamina B12 e vitamina C. A produção de bacteriocinas foi inibida por concentrações de glicerol superiores ou iguais a 1.0 g/L. Verificou-se a actividade bacteriocinogênica máxima (25600UA/mL) em caldo MRS suplementado com vitamina B1 ou ácido DL-6,8-thioctic.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100034Bacteriocina ST712BZLactobacillus pentosusbozaBacteriocin ST712BZLactobacillus pentosusboza
collection DOAJ
language English
format Article
sources DOAJ
author Svetoslav D. Todorov
Leon M.T. Dicks
spellingShingle Svetoslav D. Todorov
Leon M.T. Dicks
Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza
Brazilian Journal of Microbiology
Bacteriocina ST712BZ
Lactobacillus pentosus
boza
Bacteriocin ST712BZ
Lactobacillus pentosus
boza
author_facet Svetoslav D. Todorov
Leon M.T. Dicks
author_sort Svetoslav D. Todorov
title Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza
title_short Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza
title_full Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza
title_fullStr Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza
title_full_unstemmed Bacteriocin production by Lactobacillus pentosus ST712BZ isolated from boza Bacteriocina produzida por Lactobacillus pentosus ST712BZ isolad de boza
title_sort bacteriocin production by lactobacillus pentosus st712bz isolated from boza bacteriocina produzida por lactobacillus pentosus st712bz isolad de boza
publisher Sociedade Brasileira de Microbiologia
series Brazilian Journal of Microbiology
issn 1517-8382
1678-4405
publishDate 2007-03-01
description Bacteriocin ST712BZ (14.0kDa in size) inhibits the growth of Lactobacillus casei,Escherichia coli, Pseudomonas aeruginosa,Enterococcus faecalis, Klebsiella pneumoniae and Lactobacillus curvatus. Growth of strain ST712BZ in BHI, M17, soy milk and molasses was similar to growth in MRS, with optimal bacteriocin production (12800AU/mL) recorded in MRS after 24h. The same level of bacteriocin production (12800AU/mL) was recorded in MRS broth with an initial pH of 6.5, 6.0 and 5.5. However, MRS broth (pH 6.5) supplemented with 1mM EDTA, yielded only 6400AU/mL. Low levels of bacteriocin activity were recorded in MRS broth with an initial pH of 5.0 and 4.5. Of all media compositions tested, MRS supplemented with tryptone (20.0g/L), glucose (20.0 to 40.0g/L), mannose (20.0g/L), vitamin B12, or vitamin C yielded 12800AU/mL. Glycerol concentrations of 1.0g/L and higher repressed bacteriocin production. Maximal bacteriocin activity (25600AU/mL) was recorded in MRS supplemented with Vit. B1 or DL-6,8-thioctic acid.<br>A bacteriocina ST712BZ produzida par Lactobacillus pentosus (peso molecular de 14,0kDa) inibe o crescimento de Lactobacillus casei,Escherichia coli, Pseudomonas aeruginosa,Enterococcus faecalis, Klebsiella pneumoniae e Lactobacillus curvatus. O crescimento de L. pentosus ST712BZ em BHI, M17, leite de soja e melaços foi semelhante ao observado em MRS, registando-se a produção máxima de bacteriocina (12800UA/mL) em MRS após 24 h. Observou-se o mesmo nível de produção de bacteriocina (12800UA/mL) em caldo MRS com pH inicial de 6,5, 6,0 e 5,5. No entanto, em caldo MRS (pH 6,5) suplementado com 1 mM de EDTA a produção apenas atingiu 6400UA/mL. Os níveis de atividade bacteriocinogênica detectados em caldo MRS com um pH inicial de 5,0 e 4,5 foram baixos. De todas as fórmulas de meios de cultura testadas a que apresentou a atividade máxima 12800UA/mL foi MRS suplemento de triptona (20,0g/L), glicose (20,0 e 40,0 g/L), manose (20.0 g/L), vitamina B12 e vitamina C. A produção de bacteriocinas foi inibida por concentrações de glicerol superiores ou iguais a 1.0 g/L. Verificou-se a actividade bacteriocinogênica máxima (25600UA/mL) em caldo MRS suplementado com vitamina B1 ou ácido DL-6,8-thioctic.
topic Bacteriocina ST712BZ
Lactobacillus pentosus
boza
Bacteriocin ST712BZ
Lactobacillus pentosus
boza
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100034
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