Effect of sporulation conditions on the resistance of Bacillus subtilis spores to heat and high pressure.
Appl Microbiol Biotechnol
; 90(4): 1409-17, 2011 May.
Article
en En
| MEDLINE
| ID: mdl-21380515
ABSTRACT
Bacillus subtilis(B. subtilis) cells were placed in various environmental conditions to study the effects of aeration, water activity of the medium, temperature, pH, and calcium content on spore formation and the resulting properties. Modification of the sporulation conditions lengthened the growth period of B. subtilis and its sporulation. In some cases, it reduced the final spore concentration. The sporulation conditions significantly affected the spore properties, including germination capacity and resistance to heat treatment in water (30 min at 97°C) or to high pressure (60 min at 350 MPa and 40°C). The relationship between the modifications of these spore properties and the change in the spore structure induced by different sporulation conditions is also considered. According to this study, sporulation conditions must be carefully taken into account during settling sterilization processes applied in the food industry.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Esporas Bacterianas
/
Bacillus subtilis
/
Viabilidad Microbiana
Idioma:
En
Revista:
Appl Microbiol Biotechnol
Año:
2011
Tipo del documento:
Article
País de afiliación:
Francia