[Biological flow tracers: growth and survival of Bacillus subtilis 65-8 under environmental stress]. / Trazadores biológicos de flujos: crecimiento y sobrevivencia de Bacillus subtilis 65-8 bajo estrés ambiental.
Rev Latinoam Microbiol
; 37(1): 43-53, 1995.
Article
em Es
| MEDLINE
| ID: mdl-7784731
Microbial flow tracers are presently limited to a strain of Bacillus globigii and a few highly specific bacteriophages. Bacillus subtilis 65-8 produces a black pigment as part of the primary metabolism under minimal nutritional conditions, with glucose as the sole carbon and energy source. This work shows that Bacillus subtilis 65-8 spores are thermostable (55 degrees C during 150 días), halotolerant (they germinate and grow in an enriched medium with up to 12% NaCl), persistent in a system of sand-soil and sewage, even in the presence of added commercial oil derivatives (kerosene, leaded gasoline and unleaded diesel), they are capable to move through porous systems even as the liquids, viscous as they may be, move through. Moreover, spores were resistant to the presence of autochtonous microorganisms in sewage, where we did not detect any other organism with differential characteristics like our strain (black pigment production in minimal medium) which could interfere with the identification of our biological flow tracer. The characteristics of Bacillus subtilis 65-8 make it a suitable biological flow tracer.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bacillus subtilis
/
Microbiologia Industrial
Tipo de estudo:
Prognostic_studies
Idioma:
Es
Revista:
Rev Latinoam Microbiol
Ano de publicação:
1995
Tipo de documento:
Article
País de publicação:
México