Cui, Y. and Liu, R. and Xu, L. and Zheng, W. and Sun, W. (2018) Fermentation kinetics of enzymatic hydrolysis bagasse solutions for producing L-Lactic Acid. Sugar Tech, 20 (3). pp. 364-370.
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Abstract
Applications for L-lactic acid are increasing. Recent studies have investigated inexpensive raw materials for producing L-lactic acid and have explored technical principles. We optimized fermentation conditions for enzymatic hydrolysis of sugarcane bagasse as a substrate for L-lactic acid production, and to achieve a high conversion rate of bagasse to L-lactic acid using Rhizopus oryzae. The maximum conversion rate of L-lactic acid was 28.45% in the conditions of 48-h fermentation time and 200 r/min rotary shaking in 50 mL liquid medium with 10% inoculum. The kinetics of fermentation were worked out. Logistic equations, Luedeking–Piret equations and Luedeking–Piret-like equations were chosen as kinetic models. Three kinetic models were constructed which reflected microbial growth, product synthesis and substrate consumption; R2 of three kinetics model equations, respectively, were 0.9799, 0.9869, 0.9911, which indicated that the predicted values fit the experimental data and the equations accurately describe the fermentation process of R. oryzae Gim3.129 for producing L-lactic acid. The models described the fermentation process of R. oryzae Gim3.129 successfully and provided a theoretical foundation for the industrialization of L-lactic acid from sugarcane bagasse.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Bagasse,Fermentation,Kinetics model, L-Lactic acid optimization,Rhizopus oryzae |
| Author Affiliation: | Institute of Light Industry and Food Engineering, Guangxi University, Nanning, China |
| Subjects: | Plant Production |
| Divisions: | General |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 31 May 2018 10:51 |
| Last Modified: | 31 May 2018 10:51 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/15467 |
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