| Registro completo |
| Provedor de dados: |
BJM
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| País: |
Brazil
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| Título: |
Characterization of bacteriocins produced by Lactococcus lactis strains
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| Autores: |
Moreno,Izildinha
Lerayer,Alda L.S.
Baldini,Vera L.S.
Leitão,Mauro F. de F.
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| Data: |
2000-09-01
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| Ano: |
2000
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| Palavras-chave: |
Bacteriocins
L. lactis
Activity spectrum
Physical-chemical characteristic
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| Resumo: |
Bacteriocins produced by fifteen strains of Lactococcus lactis (14 L. lactis subsp. lactis and one L. lactis subsp. cremoris) were heat resistant, sensitive to several proteolytic enzymes and active over a wide range of pH. Their resistance to the heating was greatly influenced by the pH. Only the strain L. lactis subsp. lactis ITAL 383 produced a bacteriocin with a wide activity spectrum, similar to nisin of L. lactis subsp. lactis ATCC 11454. This bacteriocin inhibited closely related species and other Gram-positive microorganisms including Listeria monocytogenes and Staphylococcus aureus, but it was not active against the Gram-negative bacteria tested. The identification of partially purified antimicrobial compounds by SDS-PAGE showed that bacteriocin produced by strain ITAL 383 had the same molecular weight of nisin produced by L. lactis subsp. lactis ATCC 11454.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000300007
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| Editor: |
Sociedade Brasileira de Microbiologia
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| Relação: |
10.1590/S1517-83822000000300007
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Microbiology v.31 n.3 2000
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| Direitos: |
info:eu-repo/semantics/openAccess
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