Glucose protects the cell membrane, Na+/K+-ATPase, nucleic acids, and proteins in Bacillus subtilis spores under high pressure thermal sterilization.
FEMS Microbiol Lett
; 369(1)2022 10 03.
Article
en En
| MEDLINE
| ID: mdl-36130207
ABSTRACT
The extreme resistance of bacterial spores to sterilization makes them a major concern to the food industry and consumers. In this study, the effect of glucose on the inactivation of Bacillus subtilis spores by high pressure thermal sterilization (HPTS) was evaluated. The results showed that the protective effects of glucose increased with the increase in its concentration. Compared with the HPTS control (no addition of glucose), the activity of Na+/K+-ATPase was increased, the leakage of proteins and the release of 2,6-pyridine dicarboxylic acid (DPA) was decreased, and the vibrational strength of the functional group P = O was reduced by the addition of glucose. At the same time, glucose treatment increased the content of α-helix by 6%-22%, while decreased the random coil content by 5%-13% of the cellular protein. In conclusion, the addition of glucose protected the cell membrane, Na+/K+-ATPase, cellular nucleic acids and proteins of B. subtilis under HPTS treatment.
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Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bacillus subtilis
/
Ácidos Nucleicos
/
ATPasa Intercambiadora de Sodio-Potasio
Idioma:
En
Revista:
FEMS Microbiol Lett
Año:
2022
Tipo del documento:
Article