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Application of oscillation for efficiency improvement of continuous ethanol fermentation with Saccharomyces cerevisiae under very-high-gravity conditions.
Appl Microbiol Biotechnol. 2010 Mar; 86(1):103-8.AM

Abstract

Compared with steady state, oscillation in continuous very-high-gravity ethanol fermentation with Saccharomyces cerevisiae improved process productivity, which was thus introduced for the fermentation system composed of a tank fermentor followed by four-stage packed tubular bioreactors. When the very-high-gravity medium containing 280 g l(-1) glucose was fed at the dilution rate of 0.04 h(-1), the average ethanol of 15.8% (v/v) and residual glucose of 1.5 g l(-1) were achieved under the oscillatory state, with an average ethanol productivity of 2.14 g h(-1) l(-1). By contrast, only 14.8% (v/v) ethanol was achieved under the steady state at the same dilution rate, and the residual glucose was as high as 17.1 g l(-1), with an ethanol productivity of 2.00 g h(-1) l(-1), indicating a 7% improvement under the oscillatory state. When the fermentation system was operated under the steady state at the dilution rate of 0.027 h(-1) to extend the average fermentation time to 88 h from 59 h, the ethanol concentration increased slightly to 15.4% (v/v) and residual glucose decreased to 7.3 g l(-1), correspondingly, but the ethanol productivity was decreased drastically to 1.43 g h(-1) l(-1), indicating a 48% improvement under the oscillatory state at the dilution rate of 0.04 h(-1).

Authors+Show Affiliations

Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China.No affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19898843

Citation

Shen, Yu, et al. "Application of Oscillation for Efficiency Improvement of Continuous Ethanol Fermentation With Saccharomyces Cerevisiae Under Very-high-gravity Conditions." Applied Microbiology and Biotechnology, vol. 86, no. 1, 2010, pp. 103-8.
Shen Y, Ge XM, Bai FW. Application of oscillation for efficiency improvement of continuous ethanol fermentation with Saccharomyces cerevisiae under very-high-gravity conditions. Appl Microbiol Biotechnol. 2010;86(1):103-8.
Shen, Y., Ge, X. M., & Bai, F. W. (2010). Application of oscillation for efficiency improvement of continuous ethanol fermentation with Saccharomyces cerevisiae under very-high-gravity conditions. Applied Microbiology and Biotechnology, 86(1), 103-8. https://doi.org/10.1007/s00253-009-2283-2
Shen Y, Ge XM, Bai FW. Application of Oscillation for Efficiency Improvement of Continuous Ethanol Fermentation With Saccharomyces Cerevisiae Under Very-high-gravity Conditions. Appl Microbiol Biotechnol. 2010;86(1):103-8. PubMed PMID: 19898843.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Application of oscillation for efficiency improvement of continuous ethanol fermentation with Saccharomyces cerevisiae under very-high-gravity conditions. AU - Shen,Yu, AU - Ge,X M, AU - Bai,Feng Wu, Y1 - 2009/11/07/ PY - 2009/07/20/received PY - 2009/09/28/accepted PY - 2009/09/25/revised PY - 2009/11/10/entrez PY - 2009/11/10/pubmed PY - 2010/4/27/medline SP - 103 EP - 8 JF - Applied microbiology and biotechnology JO - Appl Microbiol Biotechnol VL - 86 IS - 1 N2 - Compared with steady state, oscillation in continuous very-high-gravity ethanol fermentation with Saccharomyces cerevisiae improved process productivity, which was thus introduced for the fermentation system composed of a tank fermentor followed by four-stage packed tubular bioreactors. When the very-high-gravity medium containing 280 g l(-1) glucose was fed at the dilution rate of 0.04 h(-1), the average ethanol of 15.8% (v/v) and residual glucose of 1.5 g l(-1) were achieved under the oscillatory state, with an average ethanol productivity of 2.14 g h(-1) l(-1). By contrast, only 14.8% (v/v) ethanol was achieved under the steady state at the same dilution rate, and the residual glucose was as high as 17.1 g l(-1), with an ethanol productivity of 2.00 g h(-1) l(-1), indicating a 7% improvement under the oscillatory state. When the fermentation system was operated under the steady state at the dilution rate of 0.027 h(-1) to extend the average fermentation time to 88 h from 59 h, the ethanol concentration increased slightly to 15.4% (v/v) and residual glucose decreased to 7.3 g l(-1), correspondingly, but the ethanol productivity was decreased drastically to 1.43 g h(-1) l(-1), indicating a 48% improvement under the oscillatory state at the dilution rate of 0.04 h(-1). SN - 1432-0614 UR - https://www.unboundmedicine.com/medline/citation/19898843/Application_of_oscillation_for_efficiency_improvement_of_continuous_ethanol_fermentation_with_Saccharomyces_cerevisiae_under_very_high_gravity_conditions_ L2 - https://dx.doi.org/10.1007/s00253-009-2283-2 DB - PRIME DP - Unbound Medicine ER -