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Effect of pH in the survival of Lactobacillus salivarius strain UCO_979C wild type and the pH acid acclimated variant Electron. J. Biotechnol.
Sanhueza,Enrique; Paredes-Osses,Esteban; González,Carlos L; García,Apolinaria.
Background Bacterial acclimation involves cellular changes permitting the survival of a microorganism to prolonged acid pH exposure. The general aim of this work is to support this idea by determining the effect of pH in the survival of the human gastric derived probiotic strain Lactobacillus salivarius UCO_979C-1 (wild type) and L. salivarius UCO_979C-2 (acclimation to pH 2.6), which possesses anti-Helicobacter pylori properties. Results To assess this aim, the exopolysaccharide production through the phenol-sulfuric acid method was evaluated. Moreover, morphological and structural changes by transmission and scanning electron microscopy were observed. The bacterial survival was measured by viable count. The results showed that the acclimated variant...
Tipo: Journal article Palavras-chave: Acid stress; Acclimation; Lactobacillus salivarius.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000500003
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Isolation and Probiotic Potential of Lactobacillus Salivarius and Pediococcus Pentosaceus in Specific Pathogen Free Chickens Rev. Bras. Ciênc. Avic.
Chen,F; Zhu,L; Qiu,H.
ABSTRACT This study was conducted to isolate Lactobacillus salivarius and Pediococcus pentosaceus strains from cecal content and investigate their probiotic potential in specific pathogen free (SPF) chickens. L. salivarius and P. pentosaceus strains were isolated from the cecal content of SPF chickens and identified by 16s rDNA sequence analysis by BLAST analysis at the National Center for Biotechnology Information and phylogenetic analysis using DNAStar software. In an in vivo experiment, 180 7-day-old SPF chickens were randomly assigned into three groups. Group 1 served as a control that was fed a basal diet without probiotic supplementation, and groups 2 and 3 were fed the basal diets supplemented with L. salivarius and P. pentosaceus at 2×108 CFU/g,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactobacillus salivarius; Pediococcus pentosaceus; Probiotic potential; Specific pathogen free chicken.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200325
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Efeito da microbiota cecal e do Lactobacillus salivarius inoculados in ovo em aves desafiadas com Salmonella enterica sorovar Enteritidis Arq. Bras. Med. Vet. Zootec.
Andreatti Filho,R.L.; Okamoto,A.S.; Lima,E.T.; Gratão,P.R.; DelBem,S.R..
Ovos embrionados provenientes de matrizes pesadas foram inoculados na câmara de ar com microbiota cecal total, microbiota cecal diluída e cultura de Lactobacillus salivarius, no 18º dia de incubação. Dois dias após o nascimento, as aves foram desafiadas com Salmonella enterica sorovar Enteritidis (SE) e, cinco dias após o desafio, avaliou-se a presença da bactéria no fígado e ceco. O efeito de exclusão competitiva, após o desafio com SE, somente foi observado pela ausência da bactéria no fígado das aves tratadas in ovo com L. salivarius. A inoculação in ovo de microbiota cecal indefinida ou diluída não reduziu a colonização de SE no fígado e no ceco das aves, incluindo, neste último, também o tratamento com L. salivarius. Nenhum dos tratamentos in ovo...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Galinha; Salmonella entérica; Lactobacillus salivarius; Microbiota cecal; Exclusão competitiva; In ovo.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000400003
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In vitro antagonistic growth effects of Lactobacillus fermentum and Lactobacillus salivarius and their fermentative broth on periodontal pathogens BJM
Chen,Ling-Ju; Tsai,Hsiu-Ting; Chen,Wei-Jen; Hsieh,Chu-Yang; Wang,Pi-Chieh; Chen,Chung-Shih; Wang,Lina; Yang,Chi-Chiang.
As lactobacilli possess an antagonistic growth property, these bacteria may be beneficial as bioprotective agents for infection control. However, whether the antagonistic growth effects are attributed to the lactobacilli themselves or their fermentative broth remains unclear. The antagonistic growth effects of Lactobacillus salivarius and Lactobacillus fermentum as well as their fermentative broth were thus tested using both disc agar diffusion test and broth dilution method, and their effects on periodontal pathogens, including Streptococcus mutans, Streptococcus sanguis, and Porphyromonas gingivalisin vitro at different concentrations and for different time periods were also compared. Both Lactobacillus salivarius and Lactobacillus fermentum and their...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactobacillus fermentum; Lactobacillus salivarius; Streptococcus mutans; Streptococcus sanguis; Porphyromonas gingivalis; Periodontitis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400019
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