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	Provedor de dados BJM (4) Rev. Microbiol. (1) Autor Moreno,Izildinha (5) Lerayer,Alda L.S. (2) Antunes,Adriane Elisabete Costa (1) Baldini,Vera L.S. (1) Bromberg,Renata (1) Delboni,Roberta Regina (1) Dourado,Fernanda Martelo (1) Grael,Elza Terezinha (1) Kuaye,Arnaldo Yoshiteru (1) Leitão,Mauro F. de F. (1) Leitão,Mauro F. de Freitas (1) Lerayer,Alda Luiza Santos (1) Nascimento,Maristela da Silva do (1) Oliveira,Josiane de (1) Rodrigues,Luana Gajardoni (1) Saccaro,Daniela Marques (1) Zaganini,Cíntia Lopes (1) Mais... Palavra-chave Bacteriocins (3) L. lactis (2) Activity spectrum (1) Bacteriocin (1) Biopreservation (1) Buttermilk (1) Enterococcus faecium (1) Fermentation (1) Gram-positive pathogen (1) Inhibitory activity (1) Lactic acid bacteria (1) Meat (1) Mesophilic cultures (1) Physical-chemical characteristic (1) Plasmids (1) Selectivity (1) Viability (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2010 (1) 2007 (1) 2004 (1) 2000 (1) 1999 (1) País Brazil (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Detection and characterization of bacteriocin-producing Lactococcus lactis strains Rev. Microbiol. Moreno,Izildinha; Lerayer,Alda L.S.; Leitão,Mauro F. de Freitas. One hundred sixty seven strains of Lactococcus lactis were screened for bacteriocin production by well diffusion assay of GM17 agar. Fourteen (8.4%) produced antimicrobial activity other than organic acids, bacteriophages or hydrogen peroxide. The frequency of bacteriocin production ranged from 2% in L. lactis subsp. cremoris up to 12% in L. lactis subsp. lactis. Antimicrobial activities were not observed in any strain of L. lactis subsp. lactis var. diacetylactis. Among thirteen bacteriocin-producing strains and two nisin-producing strains (L. lactis subsp. lactis ATCC 11454 and L. lactis subsp. lactis CNRZ 150), eight (53%) were characterized as lactose-positive (Lac+) and proteinase-negative (Prt-). The bacteriocin-producing cultures were also... Tipo: Info:eu-repo/semantics/article Palavras-chave: L. lactis; Bacteriocins; Fermentation; Plasmids. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000200008 Selective enumeration and viability of Bifidobacterium animalis subsp. lactis in a new fermented milk product BJM Antunes,Adriane Elisabete Costa; Grael,Elza Terezinha; Moreno,Izildinha; Rodrigues,Luana Gajardoni; Dourado,Fernanda Martelo; Saccaro,Daniela Marques; Lerayer,Alda Luiza Santos. One of the key focuses of today's dairy industry worldwide is the continued development of new products, especially probiotic-based products. Buttermilk is originally a by-product of butter making fermented by Mesophilic Aromatic Cultures (MAC). It can also be made by fermentation of pasteurized whole milk or skimmed milk. This product is not marketed in Brazil. The objectives of this work were: (1) to develop a selective medium for Bifidobacterium animalis subsp. lactis enumeration and (2) to determine the viability of this microorganism during the shelf life of the buttermilk. Skim milk added with 10% sucrose or 0.03% sucralose was pasteurized and inoculated with a composite starter culture consisting of 1% MAC (containing Lactococcus lactis subsp.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mesophilic cultures; Buttermilk; Selectivity; Viability. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100035 Characterization of bacteriocins produced by Lactococcus lactis strains BJM Moreno,Izildinha; Lerayer,Alda L.S.; Baldini,Vera L.S.; Leitão,Mauro F. de F.. 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteriocins; L. lactis; Activity spectrum; Physical-chemical characteristic. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000300007 Isolation of bacteriocin-producing lactic acid bacteria from meat and meat products and its spectrum of inhibitory activity BJM Bromberg,Renata; Moreno,Izildinha; Zaganini,Cíntia Lopes; Delboni,Roberta Regina; Oliveira,Josiane de. A total of 285 samples of meat and meat products were evaluated for the presence of bacteriocin-producing lactic acid bacteria by the "sandwich" test. From 174 of these samples, 813 strains of lactic acid bacteria were isolated. They were able to inhibit the growth of Staphylococcus aureus CTC 33 and/or Listeria innocua Lin 11. When evaluated by the well-diffusion assay, 128 of these strains inhibited the growth of the indicator strains. The inhibitory spectra of activity of the isolates were evaluated against a range of Gram-positive and Gram-negative test organisms. S. aureus was the most sensitive indicator tested, whereas Enterococcus faecalis and Lactobacillus plantarum were the most resistant ones. All the compounds produced by the lactic acid... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteriocins; Lactic acid bacteria; Meat; Inhibitory activity. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100023 Antimicrobial activity of Enterococcus faecium FAIR-E 198 against gram-positive pathogens BJM Nascimento,Maristela da Silva do; Moreno,Izildinha; Kuaye,Arnaldo Yoshiteru. This study investigated the antimicrobial activity of Enterococcus faecium FAIR-E 198 against Bacillus cereus, Listeria monocytogenes and Staphylococcus aureus. Using the critical-dilution method, the bacteriocin produced by E. faecium FAIR-E 198 inhibited all L. monocytogenes strains evaluated (1,600 to 19,200 AU mL-1). However, none of the B. cereus and S. aureus strains investigated were inhibited. The maximum activity of this bacteriocin (800 AU mL-1) was observed in MRS broth, while the activity in milk was 100 AU mL-1. In the co-cultivation test in milk, B. cereus K1-B041 was reduced to below the detection limit (1.00 log CFU mL-1) after 48 h. E. faecium reduced the initial L. monocytogenes Scott A population by 1 log CFU mL-1 after 3 h at 35ºC.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Enterococcus faecium; Bacteriocin; Biopreservation; Gram-positive pathogen. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100013 Registros recuperados: 5 Primeira ... 1 ... Última

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