Screening for exopolysaccharide-producing bacteria from sub-tropical polluted groundwater
Braz. j. biol
; 62(2): 363-369, May 2002. tab, graf
Artigo
em Inglês
| LILACS
| ID: lil-326207
Biblioteca responsável:
BR1.1
RESUMO
A selection of exopolysaccharide (EPS) -- producing bacterial strains was conducted in groundwater adjacent to an old controlled landfill in the City of Säo Carlos (Säo Paulo, Brazil). The strains were isolated in P and E media under aerobic and microaerophilic conditions at 25øC. A total of 26 strains were isolated and based on the mucoid mode of the colonies, 6 were selected and their morphological, physiological and biochemical aspects were characterized. All strains presented pigmentation, ranging from yellow to orange and from pink to salmon, with a shiny glistening aspect in all tested media. Strains Lb, Lc and Lg, which excelled the others with regard to the mucoid mode of the colonies, were selected to be cultured in E medium with alternate sucrose and glucose as carbon sources in anaerobiosis at 25øC to analyze the production of EPS. Strains Lc and Lg were classified as being of order Actinomycelates, suborder Corynebacterineae. Lg strain was identified as Gordonia polyisoprenivorans and Lc strain did not correspond to a known description and therefore a more detailed study is under preparation. Considering all ecological aspects and the metabolic potential associated with the microorganisms of the environment studied, as well as the capacity to produce pigment and EPS, and the presence of G. polyisoprenivorans, a rubber degrader bacterium, the potential of the groundwater analyzed is evident as a source of microorganisms to be utilized in studies related to environmental remediation
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Contexto em Saúde:
ODS3 - Meta 3.9 Reduzir as mortes por produtos químicos y contaminação do ar, água e solo
/
Doenças Negligenciadas
Problema de saúde:
Água, Saneamento e Higiene
/
Tuberculose
Base de dados:
LILACS
Assunto principal:
Polissacarídeos Bacterianos
/
Microbiologia do Solo
/
Microbiologia da Água
/
Actinomycetales
/
Micobactérias não Tuberculosas
Tipo de estudo:
Estudo diagnóstico
/
Estudo de rastreamento
Idioma:
Inglês
Revista:
Braz. j. biol
Assunto da revista:
Biologia
Ano de publicação:
2002
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal de Säo Carlos/BR
/
Universidade Federal de Uberlândia/BR