Production of Butyric Acid by Immobilized Cell Fermentation in a Rice Bran Fibrous-Bed Bioreactor

doi:10.3969/j.issn.1673-1689.2019.02.020

Home > Archive>Volume 38, Issue 2, 2019 >140-144. DOI:10.3969/j.issn.1673-1689.2019.02.020

Production of Butyric Acid by Immobilized Cell Fermentation in a Rice Bran Fibrous-Bed Bioreactor
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                        10.3969/j.issn.1673-1689.2019.02.020
                    
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A novel external fibrous-bed bioreactor with rice bran as cell immobilized material for butyric acid production is established in this study. Using Clostridium tyrobutyricum as the fermentation strain，free-cell and immobilized-cell fermentation for butyric acid production are conducted. The results show that the productivity of immobilized-cell batch fermentation reaches 0.48 g/L/h，which is 55% higher than that of free cells. Furthermore，21.05 g/L butyrate is achieved by immobilized cells in the repeated batch fermentation and butyrate production is stable by using this system. Finally，the simulation experiments about adsorption of sodium butyrate by rice bran are conducted，and the ratio of equilibrium adsorption is about 0.084 g/g. The sodium butyrate in the fermentation broth could be adsorbed by the rice bran and the ratio of adsorption is 0.105 g/g. The rice bran in this study can be directly used as feed additive.

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ZHOU Lichun, ZHU Jianzhong, WANG Wenguang, CAI Jin, HUANG Lei, XU Zhinan. Production of Butyric Acid by Immobilized Cell Fermentation in a Rice Bran Fibrous-Bed Bioreactor[J]. Journal of Food Science and Biotechnology,2019,38(2):140-144.

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Online: March 28,2019
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