Cited by 50Biofuel production and bioconversionMicrobial Metabolic Engineering and BioproductionFermentation and Sensory Analysis

Optimization of Nitrogen and Metal Ions Supplementation for Very High Gravity Bioethanol Fermentation from Sweet Sorghum Juice Using an Orthogonal Array Design

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Deesuth, Orawan, Laopaiboon, Pattana, Jaisil, Prasit, Laopaiboon, Lakkana·2012·Energies

Abstract

Optimization of four parameters, i.e., zinc (Zn2+), magnesium (Mg2+), manganese (Mn2+) and yeast extract for bioethanol production from sweet sorghum juice by Saccharomyces cerevisiae NP 01 under very high gravity (VHG, 270 g·L−1 of total sugar) conditions was performed using an L9 (34) orthogonal array design. The fermentation was carried out at 30 °C in 500-mL air-locked Erlenmeyer flasks at the agitation rate of 100 rpm and the initial yeast cell concentration in the juice was approximately 5 × 107 cells·mL−1. The results showed that the order of influence was yeast extract > Mn2+ > Zn2+ > Mg2+ and the optimum nutrient concentrations for the ethanol fermentation were Zn2+, 0.01; Mg2+, 0.05; Mn2+, 0.04; and yeast extract, 9 g·L−1. The verification experiments under the optimum condition clearly indicated that the metals and nitrogen supplementation improved ethanol production efficiency under the VHG fermentation conditions. The ethanol concentration (P), yield (Yp/s) and productivity (Qp) were 120.58 ± 0.26 g·L−1, 0.49 ± 0.01 and 2.51 ± 0.01 g·L−1·h−1, respectively, while in the control treatment (without nutrient supplement) P, Yp/s and Qp were only 93.45 ± 0.45 g·L−1, 0.49 ± 0.00 and 1.30 ± 0.01 g·L−1·h−1, respectively.

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  1. Pinheiro Lima, M.A., Policastro Natalence, A.P., Eds.; In Tech: London, UK, 2012; Chapter 3, pp. 51-74.
  2. Minteer, S.D. Alcoholic Fuels; CRC Press Taylor and Francis group: London, UK, 2006.
  3. Sridee, W.; Laopaiboon, L.; Jaisil, P.; Laopaiboon, P. The use of dried spent yeast as a low c-cost nitrogen supplementation from sweet sorghum juice under very high gravity condition. Electron. J. Biotechnol. 2011, 14, 1-15.
  4. Jangchud, A. Product optimization. In Statistics for Product Development and Application; Kasetsart University: Bangkok, Thailand, 2006; pp. 241-288.

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Authors
Deesuth, O., Laopaiboon, P., Jaisil, P., & Laopaiboon, L.
Affiliations
Khon Kaen University (TH)
Corresponding author
Laopaiboon, Lakkana
Venue
Energies
Publisher
MDPI AG
Published
2012-08-24
Volume
5
Issue
9
Pages
3178-3197
ISSN
1996-1073 (ISSN-L)
OpenAlex
W2042086945
Cited by
50
References
57
Citations by year
2026: 1 · 2025: 1 · 2024: 4 · 2023: 4 · 2022: 3 · 2021: 6 · 2020: 9 · 2019: 4 · 2018: 5 · 2017: 4 · 2016: 1 · 2015: 2 · 2014: 3 · 2013: 3
FWCI
1.46
Type
journal article
Language
en
Open access
Locations
  • Energies (publishedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Higher Education Research Promotion
  • Khon Kaen University
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Fermentation and Sensory Analysis
Keywords
bioethanol production, very high gravity fermentation, sweet sorghum juice, Saccharomyces cerevisiae, zinc supplementation, magnesium supplementation, manganese supplementation, yeast extract, nitrogen supplementation, fermentation optimization, ethanol yield, ethanol productivity

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