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Comparison of Cassava Starch with Corn as a Feedstock for Bioethanol Production
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Cassava is a high potential feedstock for bioethanol production in Asian countries, primarily due to high yield of carbohydrate per unit land, and its ability to grow on marginal lands with minimal agrochemical requirements. The objective of this study was to compare the bioethanol production from cassava starch with corn starch using a conventional and a raw/granular starch hydrolyzing process (GSH). The fermentation performance of cassava starch was compared with three corn starch types with different amylose: Amylopectin ratios. The final ethanol concentration with cassava starch was similar to that of two corn starch types, dent corn and waxy corn for both processes. For the cassava starch, the ethanol concentration achieved with GSH process was 2.8% higher than that in the conventional process. Cassava starch yielded the highest fermentation rates of the four starches investigated, during the conventional process. Ethanol production and fermentation profiles comparable with corn, a widely used feedstock, makes cassava starch an attractive substrate for bioethanol production.
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Ethanol yield varies by crop: wheat 2590 L/ha, cassava 3310 L/ha, corn up to 4020 L/ha, and sugar beet up to 6680 L/ha.
“The yield of ethanol (L · ha -1 ) varies from crop to crop, e.g., wheat (2590 L · ha -1 ), cassava (3310 L · ha -1 ), corn (up to 4020 L · ha -1 ), and sugar beet (up to 6680 L · ha -1 ) [76].”
From Key Targets for Improving Algal Biofuel Production (2021) · cites this paper as [76]
The Introduction discusses cassava’s carbohydrate yield per hectare, while §2.5 defines ethanol yield per kilogram of dry starch—not per hectare. Searches for the four crop figures and ethanol yield per hectare found no passage in our copy giving the claimed values. (LLM, conf=0.76)
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Key Targets for Improving Algal Biofuel Production
Griffiths, G., Hossain, A. K., Sharma, V., & Duraisamy, G. (2021) · Clean Technologies · doi:10.3390/cleantechnol3040043 · Cited by 49
Metadata
- Authors
- Pradyawong, S., Juneja, A., Sadiq, M. B., Noomhorm, A., & Singh, V.
- Affiliations
- Asian Institute of Technology (TH)
- University of Illinois Urbana-Champaign (US)
- Corresponding author
- Singh, Vijay
- Venue
- Energies
- Publisher
- MDPI AG
- Published
- 2018-12-13
- Volume
- 11
- Issue
- 12
- Pages
- 3476
- ISSN
- 1996-1073 (ISSN-L)
- OpenAlex
- W2905262859
- Cited by
- 61
- References
- 23
- Citations by year
- 2026: 7 · 2025: 9 · 2024: 9 · 2023: 10 · 2022: 6 · 2021: 9 · 2020: 5 · 2019: 6
- FWCI
- 2.00
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Energies (publishedVersion, cc-by)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institute of Food and Agriculture (ILLU- 741–325)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Cassava research and cyanide
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Keywords
- cassava starch, corn starch, bioethanol production, starch hydrolysis, amylose/amylopectin ratio, dent corn, waxy corn, fermentation performance, ethanol yield, biofuel feedstock
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