Comparison of Cassava Starch with Corn as a Feedstock for Bioethanol Production

Sarocha Pradyawong, Ankita Juneja, Muhammad Bilal Sadiq, Athapol Noomhorm and Vijay Singh
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Sarocha Pradyawong: Department of Food Engineering and Bioprocess Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand
Ankita Juneja: Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
Muhammad Bilal Sadiq: Department of Food Engineering and Bioprocess Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand
Athapol Noomhorm: Department of Food Engineering and Bioprocess Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand
Vijay Singh: Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA

Energies, 2018, vol. 11, issue 12, 1-11

Abstract: 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.

Keywords: bioethanol; corn; cassava starch; granular starch hydrolysis; fermentation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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