摘要
考察了外源有机酸(丙酸、乙酸、琥珀酸)对于游离细胞与纤维床反应器生产丙酸的影响。结果表明,以Propionibacterium freudenreichii CCTCC M207015为生产菌株时,纤维床反应器具有比游离细胞更强的丙酸、乙酸耐受性,其中丙酸的抑制现象比乙酸的更加严重。此外,外源琥珀酸可以作为丙酸合成的前体物质对P.freudenreichii CCTCC M207015发酵生产丙酸产生促进作用。
The influence of organic acids (propionic, acetic and succinic acids) on propionic acid production from Propionibacterium freudenreichii CCTCC M207015 was investigated. The results indicated that the fibrous-bed bioreactor had more acid-resistant ability compared with the free cell fermentation. Propionic acid is more sensitive towards fermentation than acetic acid. In addition, succinic acid as a precursor substance could enhance the production of propionic acid.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2009年第5期16-21,共6页
Food and Fermentation Industries
基金
国家"863"项目(2006AA03Z453)
国家"973"项目子课题(2007CB14304)
国家自然科学基金(20674038)