JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE B 2012 Vol.13 No.2 P.103-110

Optimization of succinic acid fermentation with Actinobacillus succinogenes by response surface methodology (RSM)

Author(s): Yun-jian Zhang, Qiang Li, Yu-xiu Zhang, Dan Wang, Jian-min Xing
Affiliation(s): School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; more
Corresponding email(s): zhangyuxiu@cumtb.edu.cn, jmxing@home.ipe.ac.cn
Key Words: Succinic acid, Response surface methodology (RSM), Optimization, Actinobacillus succinogenes

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Abstract: succinic acid is considered as an important platform chemical. succinic acid fermentation with Actinobacillus succinogenes strain BE-1 was optimized by central composite design (CCD) using a response surface methodology (RSM). The optimized production of succinic acid was predicted and the interactive effects between glucose, yeast extract, and magnesium carbonate were investigated. As a result, a model for predicting the concentration of succinic acid production was developed. The accuracy of the model was confirmed by the analysis of variance (ANOVA), and the validity was further proved by verification experiments showing that percentage errors between actual and predicted values varied from 3.02% to 6.38%. In addition, it was observed that the interactive effect between yeast extract and magnesium carbonate was statistically significant. In conclusion, RSM is an effective and useful method for optimizing the medium components and investigating the interactive effects, and can provide valuable information for succinic acid scale-up fermentation using A. succinogenes strain BE-1.

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