Bacteria Isolation And Purification
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. Antioxidant activity, antibacterial potential and characterization of active fraction of Dioscorea pentaphylla L. tuber extract collected from Similipal Biosphere Reserve, Odisha, India
ABSTRACT Dioscorea pentaphylla L., a wild tuber is used both as food and medicines among different ethnic groups of Similipal Biosphere Reserve, India. Tubers are used against skin infections. In order to establish and confirm tribal claims, methanol extract was subjected to fractionation. The active fraction (DP1) was subsequently used for further purificat
Braz. J. Pharm. Sci.. Publicado em: 09/04/2018
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2. Production of Antimicrobial Metabolites by Streptomyces lavendulocolor VHB-9 Isolated from Granite Mines
ABSTRACT The actinobacterial strain Streptomyces lavendulocolor VHB-9 was isolated from granite mine soil samples of Khammam district, Telangana state, India. The strain was identified based on detailed microorphological, cultural and phylogenetic analysis. Bioactive guided isolation of the secondary metabolites of the strain was carried out by growing the s
Braz. arch. biol. technol.. Publicado em: 22/06/2017
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3. Isolation and characterization of novel thermophilic lipase-secreting bacteria
The purpose of the present study was to screen and identify the lipase-producing microorganisms from various regions of Iran. Samples collected from hot spring, Persian Gulf, desert area and oil-contaminated soil, were analyzed for thermophilic extracellular-lipase producing organisms. Six strains with high activity on rhodamine B plates were selected for ch
Braz. J. Microbiol.. Publicado em: 2013-12
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4. Aplicação de metodologias de isolamento de bactérias ainda \ não-cultivadas\ em ecossistemas marinhos. / Applications of methods for isolating uncultured bacteria in marine environments.
Aplicou-se duas metodologias para isolamento de bactérias ainda \"não-cultivadas\" em amostras de água do mar de Ubatuba (SP, Brasil) e da Baía do Almirantado (Antártica). Pela adaptação do método de cultivo de alto desempenho (HTC), foi possível isolar 4 culturas bacterianas, nas quais duas podem ser consideradas ainda não-cultivadas e foram ident
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2011
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5. Isolamento, purificação e caracterização molecular de bacteriófagos específicos para Escherichia coli causadora de mastite bovina / Isolation, purification and molecular characterization of bacteriophages specific for Escherichia coli causing bovine mastitis
A mastite bovina causa sérios prejuízos tanto ao produtor, quanto à indústria de produtos lácteos. É causada por diversos patógenos, divididos em dois grupos principais: ambientais e contagiosos. Enquanto o número de casos de mastite contagiosa vem diminuindo, os casos causados por patógenos ambientais aumentam, sendo a Escherichia coli o principal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/06/2011
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6. Estudio químico y evaluación de la actividad antifouling del octocoral caribeño Eunicea laciniata
The bioassay guided purification of the octocoral Eunicea laciniata organic extract, collected at Santa Marta bay, Colombia, allowed the isolation of the new compound (-)-3β-pregna-5,20-dienyl-β-D-arabinopyranoside (1), along with the known compounds 1(S*),11(R*)-dolabell-3(E),7(E),12(18)-triene (2), 13-keto-1(S),11(R)-dolabell-3(E ),7(E),12(18)-triene (3)
Química Nova. Publicado em: 2010
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7. Isolation, Purification and Evaluation of Antibacterial Agents from Aloe vera
The ethanol, methanol and acetone extracts of Aloe vera gel were studied for their antimicrobial activity against four Gram-positive and Gram-negative bacteria using agar well diffusion method. The extracts showed varied levels of antimicrobial activity against the tested pathogens. The ethanol and methanol extracts showed higher activity while acetone extra
Brazilian Journal of Microbiology. Publicado em: 2009-12
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8. InfluÃncia do meio de cultura na produÃÃo de metabÃlicos bioativos pelo endÃfito Streptomycessp. EBR49-A UFPEDA
Endophytic Streptomyces strains of medicinal plants has been contributing in a meaningful whit promising source for discovery of new bioactive metabolites. This study has as objective to select the best culture media and time of production of secondary metabolites then your isolation. Five different fermentation media were used in through the disk diffusion
Publicado em: 2009
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9. Isolamento e identificação de compostos com atividade antibacteriana da própolis vermelha brasileira / Isolation and identification of compounds presenting antibacterial activity in Brazilian red propolis
Propolis is a resinous material, collected by honeybees from several parts of plants, known for its antimicrobial, antioxidant, anti-inflammatory, antiviral properties, among others. Its composition varies according to several factors, such as the geographical location. A novel type of Brazilian propolis, named red propolis due to its intense characteristic
Publicado em: 2008
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10. Bacteriocins from lactic acid bacteria: purification, properties and use as biopreservatives
Biopreservation systems in foods are of increasing interest for industry and consumers. Bacteriocinogenic lactic acid bacteria and/or their isolated bacteriocins are considered safe additives (GRAS), useful to control the frequent development of pathogens and spoiling microorganisms in foods and feed. The spreading of bacterial antibiotic resistance and the
Brazilian Archives of Biology and Technology. Publicado em: 2007-05
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11. Rapid procedure for isolation of plasmid DNA and application to epidemiological analysis.
A rapid and simple plasmid isolation procedure was developed for the epidemiological analysis of plasmid-mediated antimicrobial resistance. By this method, plasmid DNAs ranging in molecular weight between 2.0 and 122 X 10(6) could be detected. Various bacteria, such as strains of the family Enterobacteriaceae, Pseudomonas aeruginosa, Haemophilus influenzae,
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12. Affinity chromatography purification of cytochrome c binding enzymes.
An efficient affinity chromatography procedure for the isolation of mitochondrial cytochrome c oxidase and reductase is described. Saccharomyces cerevisiae cytochrome c was used as a ligand, bound to a thiol-Sepharose 4B gel through cysteine-107. In this way, the site of interaction of cytochrome c with cytochrome oxidase and reductase remained unmodified an