Bifidobacterium Adolescentis
Mostrando 1-12 de 28 artigos, teses e dissertações.
-
1. Structural and biophysical studies of xylose isomerases for production of second generation ethanol / Estudos biofísicos e estruturais de xilose isomerases para produção de etanol de segunda geração
A demanda por combustíveis baseados em recursos renováveis é alta nos dias de hoje e tende a aumentar bastante no futuro. No Brasil, indústrias de biocombustíveis produzem principalmente etanol a partir cana-de-açúcar. A biomassa lignocelulósica, compreendendo resíduos de culturas, resíduos florestais, sólidos urbanos, é explorada como um elevado
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
-
2. Caracterização parcial de substância antagonista produzida por uma amostra de Clostridium butyricum
A produção de substâncias antagonistas por espécies bacterianas presentes em sistema de canais radiculares (SCR) infectados, tem um papel importante na colonização deste sítio. O objetivo deste estudo foi caracterizar parcialmente a substância antagonista produzida por amostra de Clostridium butyricum isolado de SCR infectados.A produção de substâ
Brazilian Journal of Microbiology. Publicado em: 2007-06
-
3. Selective Plating Underestimates Abundance and Shows Differential Recovery of Bifidobacterial Species from Human Feces
The aim of the present work was to compare the efficacies and levels of selectivity of different culture-dependent and -independent methods for analyzing bifidobacteria in human stool samples. The three different culture media used here significantly differed from each other, particularly with regard to the recovery of Bifidobacterium adolescentis. Bifidobac
American Society for Microbiology.
-
4. Bifidobacterial Diversity in Human Feces Detected by Genus-Specific PCR and Denaturing Gradient Gel Electrophoresis
We describe the development and validation of a method for the qualitative analysis of complex bifidobacterial communities based on PCR and denaturing gradient gel electrophoresis (DGGE). Bifidobacterium genus-specific primers were used to amplify an approximately 520-bp fragment from the 16S ribosomal DNA (rDNA), and the fragments were separated in a sequen
American Society for Microbiology.
-
5. Isolation of a human intestinal anaerobe, Bifidobacterium sp. strain SEN, capable of hydrolyzing sennosides to sennidins.
A strictly anaerobic bacterium capable of metabolizing sennosides was isolated from human feces and identified as Bifidobacterium sp., named strain SEN. The bacterium hydrolyzed sennosides A and B to sennidins A and B via sennidin A and B 8-monoglucosides, respectively. Among nine species of Bifidobacterium having beta-glucosidase activity, only Bifidobacter
-
6. Species-specific oligonucleotide probes for five Bifidobacterium species detected in human intestinal microflora.
Portions of the 16S rRNA from closely related species of the genus Bifidobacterium that are found in the human intestinal microflora were sequenced in order to design species-specific oligonucleotide probes. Five oligonucleotide probes ranging from 16 to 19 bases in length and complementary to 16S rRNA sequences from Bifidobacterium adolescentis, B. bifidum,
-
7. Characterization of a Novel β-Galactosidase from Bifidobacterium adolescentis DSM 20083 Active towards Transgalactooligosaccharides
This paper reports on the effects of both reducing and nonreducing transgalactooligosaccharides (TOS) comprising 2 to 8 residues on the growth of Bifidobacterium adolescentis DSM 20083 and on the production of a novel β-galactosidase (β-Gal II). In cells grown on TOS, in addition to the lactose-degrading β-Gal (β-Gal I), another β-Gal (β-Gal II) was de
American Society for Microbiology.
-
8. Synthesis and Fermentation Properties of Novel Galacto-Oligosaccharides by β-Galactosidases from Bifidobacterium Species
β-Galactosidase enzymes were extracted from pure cultures of Bifidobacterium angulatum, B. bifidum BB-12, B. adolescentis ANB-7, B. infantis DSM-20088, and B. pseudolongum DSM-20099 and used in glycosyl transfer reactions to synthesize oligosaccharides from lactose. At a lactose concentration of 30% (wt/wt) oligosaccharide yields of 24.7 to 47.6% occurred w
American Society for Microbiology.
-
9. Quantitative PCR with 16S rRNA-Gene-Targeted Species-Specific Primers for Analysis of Human Intestinal Bifidobacteria
A highly sensitive quantitative PCR detection method has been developed and applied to the distribution analysis of human intestinal bifidobacteria by combining real-time PCR with Bifidobacterium genus- and species-specific primers. Real-time PCR detection of serially diluted DNA extracted from cultured bifidobacteria was linear for cell counts ranging from
American Society for Microbiology.
-
10. Survival and enumeration of the fecal indicators Bifidobacterium adolescentis and Escherichia coli in a tropical rain forest watershed.
The density of Bifidobacterium spp., fecal coliforms, Escherichia coli, and total anaerobic bacteria, acridine orange direct counts, percentages of total bacterial community activity and respiration, and 12 physical and chemical parameters were measured simultaneously at six sites for 12 months in the Mameyes River rain forest watershed, Puerto Rico. The den
-
11. Multiplex PCR with 16S rRNA Gene-Targeted Primers of Bifidobacterium spp. To Identify Sources of Fecal Pollution
Bifidobacteria are one of the most common bacterial types found in the intestines of humans and other animals and may be used as indicators of human fecal pollution. The presence of nine human-related Bifidobacterium species was analyzed in human and animal wastewater samples of different origins by using species-specific primers based on 16S rRNA sequences.
American Society for Microbiology.
-
12. Identification, Detection, and Enumeration of Human Bifidobacterium Species by PCR Targeting the Transaldolase Gene
Methods that enabled the identification, detection, and enumeration of Bifidobacterium species by PCR targeting the transaldolase gene were tested. Bifidobacterial species isolated from the feces of human adults and babies were identified by PCR amplification of a 301-bp transaldolase gene sequence and comparison of the relative migrations of the DNA fragmen
American Society for Microbiology.