Survival ofMegasphaera elsdenii during starvation

Autor: R.B. Hespell, Ronald W. Mink
Rok vydání: 1981
Předmět:
Zdroj: Current Microbiology. 5:51-56
ISSN: 1432-0991
0343-8651
Popis: Batch- and continuous-cultured cell suspensions of the anaerobic ruminal bacteriumMegasphaera elsdenii strain T-81 were subjected to total nutrient starvation, during which time changes in cell viability, cell composition, and endogenous fermentation acids were monitored. The populations exhibited poor survival capabilities with a 50% survival time of 9–13 h. The primary substrates used for endogenous metabolism appeared to be cellular RNA, carbohydrate, and possibly protein. The types and amounts of major fermentation acids (acetic, butyric, caproic) released from starving cells varied depending upon initial growth conditions and starvation time. The data suggest that growth conditions affect cell composition and have important roles in survival ofM. elsdenii.
Databáze: OpenAIRE