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| Peralta,Guillermo Hugo; Bergamini,Carina Viviana; Hynes,Erica Rut. |
| ABSTRACT Aminotransferases and glutamate dehydrogenase are two main types of enzymes involved in the initial steps of amino acid catabolism, which plays a key role in the cheese flavor development. In the present work, glutamate dehydrogenase and aminotransferase activities were screened in twenty one strains of lactic acid bacteria of dairy interest, either cheese-isolated or commercial starters, including fifteen mesophilic lactobacilli, four thermophilic lactobacilli, and two streptococci. The strains of Streptococcus thermophilus showed the highest glutamate dehydrogenase activity, which was significantly elevated compared with the lactobacilli. Aspartate aminotransferase prevailed in most strains tested, while the levels and specificity of other... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aminotransferase activity; Glutamate dehydrogenase activity; Lactobacilli; Streptococci. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300741 |
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| Rivera,Reinaldo; de Los Ríos,Patricio; Contreras,Ángel. |
| The presence of alloctone bacteria isconsidered as one of the more important biological pollutants of water bodies, existing one close relation between the fecal contamination indicators and the existence of urban and industrial zones. In the present study we utilized indicators of fecal contamination (coliforms and streptococci) and the coliform/streptococci index (FC/FE) for determine the origin of fecal pollution in two water bodies of Temuco, Northern Campus at north surrounding of Temuco, and Rucamanque source that is located in a rural zone. It utilized the multiple assays number for obtain the bacteria more probable number in 100 mi of water sample. It was done the correlations between microbiological indicators and physic-chemical variables. The... |
| Tipo: Journal article |
Palavras-chave: Fecal pollution; Fecal indicator; Coliforms; Streptococci. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200014 |
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| Salvador,Rogério; Muller,Ernst Eckehardt; Freitas,Julio César de; Leonhadt,Julio Hermann; Pretto-Giordano,Lucienne Garcia; Dias,Juliana Alves. |
| The objective of this study was to isolate and characterize Streptococcus spp. in Nile tilapias (Oreochromis niloticus) reared in net-pens and earth nurseries. Eight intensive tilapia-rearing farms were investigated in north Paraná, Brazil from April 1st 2001 to April 30th 2002. The fish were reared in a system of hapas nets on four farms and in earth nurseries on other four farms. A total of 370 samples were analyzed of material collected from 120 fish (brain, liver, kidney, skin scrapes, ascites liquid and eye) that were sown on BHI agar (Brain Heart Infusion) supplemented with 1% yeast extract and sheep blood. Streptococcus spp. was isolated in 36 of the samples (18 brain, eight liver, eight kidney and two ascites liquid) from 25 fish. Streptococci were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pisciculture; Streptococci; Infection; Bacteriology. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000600023 |
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