【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。更多还原

【Abstract】 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.更多还原