THE EFFECTS OF PROPANOIC ACID ACCUMULATION ON THE GROWTH AND ACID-PRODUCTION OF PROPIONIBACTERIUM SHERMANII
- VernacularTitle:丙酸积累对薛氏丙酸杆菌生长及产酸的影响
- Author:
Hong YI
;
Lili WANG
;
Huiyong FENG
;
Xiuping DONG
;
Jian HOU
;
- Publication Type:Journal Article
- Keywords:
Propanoic acid, Propionibacterium shermanii ,Growth,Acid production
- From:
Microbiology
1992;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
The effects of propanoic acid accumulation on the growth and acid production of Propionibacterium shermanii are reported in this paper, the glucose consumption, acid production and cell growth curve are measured in the batch fermentation process with 6%glucose serves as carbon source and pH value controlled at 6 5 If 1%, 3%, and 6% propanoic acid are added to the broth 24 hours after inoculation, the cell dry weights obtained at the end of the fermentation change to 75 3%, 65 4%, 52 9% of the CK respectively, at the same time, the acid accumulation becomes 79 3%, 69 2%, 39 3% of the CK respectively But even 6% propanoic acid is added, the glucose consumption and acid production could not be stopped completely The cell dry weight increased 60% if part of the propanoic acid is removed from the broth and replaced by fresh medium
