Bioethanol production from Solanum lycocarpum starch: A sustainable non-food energy source for biofuels

Ricardo R. Morais, Aline M. Pascoal, Marcos A. Pereira-Júnior, Karla A. Batista, Armando G. Rodriguez and Kátia F. Fernandes

Renewable Energy, 2019, vol. 140, issue C, 361-366

Abstract: In this study the starch from Solanum lycocarpum fruit was used for bioethanol production. S. lycocarpum starch was hydrolyzed in a serial reactor containing α-amylase and glucoamylase immobilized onto glutaraldehyde-derivative polyaniline, producing 91.6% of glucose for a 10% starch suspension and 86.3% of glucose for a 20% starch suspension after 60 min of reaction. Fermentation parameters for bioethanol production were evaluated by using a full factorial design (32) with fermentation time (h) and concentration of glucose equivalent (%) as independent variables. Results from factorial design showed that the highest ethanol production was found when 1% of glucose equivalent was fermented by 48 h. At these conditions the bioethanol conversion efficiency reached 92.13% and it was estimated a productivity of 596.96 L tonne−1. It can be concluded that the starch from S. lycocarpum fruit is a promising non-food and renewable energy source for bioethanol production.

Keywords: Bioethanol; Lobeira; Immobilization; Saccharomyces bayanus; Fermentation; Bioprocess (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:140:y:2019:i:c:p:361-366

DOI: 10.1016/j.renene.2019.02.056

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