Data/hora: 17/06/2024 01:42:49

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Characterization of bacteriocins produced by Lactococcus lactis strains	
Autores: 	Moreno,Izildinha; Lerayer,Alda L.S.; Baldini,Vera L.S.; Leitão,Mauro F. de F.	
Data: 	2000-09-01	
Ano: 	2000	
Palavras-chave: 	Bacteriocins; L. lactis; Activity spectrum; Physical-chemical characteristic.	
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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000300007	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1590/S1517-83822000000300007	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.31 n.3 2000	
Fonte: 	info:eu-repo/semantics/openAccess