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Bioethanol Production from Godere (Taro Root) (Colocasia Esculenta) and Sweet Potato (Ipomoea Batatas) using Saccharomyces Cerevisiae

HomeBioethanol Production from Godere (Taro Root) (Colocasia Esculenta) and Sweet Potato (Ipomoea Batatas) using Saccharomyces Cerevisiae

Research Article

Bioethanol Production from Godere (Taro Root) (Colocasia Esculenta) and Sweet Potato (Ipomoea Batatas) using Saccharomyces Cerevisiae

Teshager Mekonnene Tekaligne, Dadi Dinku

Corresponding Author : Teshager Mekonnene Tekaligne

Departement of Chemistry, Faculty of Natural and Computational Science, Woldiya University, Ethiopia

Email ID : m.teshager@yahoo.com

Received : 2019-01-22 Accepted : 2019-03-01 Published : 2019-03-01

Abstract : This research aims at utilizing taro root and sweet potato for the production of bio-ethanol by using the yeast Saccharomyces cerevisiae. The milled samples of 50gm from each sample were taken then passed through pretreatment, hydrolysis, fermentation and distillation process respectively to produce bio-ethanol. The effects of biomass concentration, acid concentration, temperature and time on distilled and dilute acid hydrolysis were investigated. The milled taro root and s.potato were hydrolysed by distilled water and by dilute sulfuric acid ( 1, 2, 3 and 4) with (6.25, 7.14, 8.33, 10.00, 12.5 and 16.61 % w/v) of biomass concentration at temperature of ( room, 30, 35, 40 and 45°C) for 1, 2, 3, 4 and 5 days. The result showed that the maximum sugar content (83.14 and 86.66 % w/w by phenol-sulfuric acid and Fehling method respectively for taro root, 88.51 and 88.33 % w/w by phenol-sulfuric acid and Fehling method respectively for s.potato,) was obtained from hydrolysis of 10 % biomass concentration containing 2% sulfuric acid at 35 OC for 4 days. The optimized hydrolyzate sample was fermented at optimized pH, 6.00, yeast extract, 4 g/100 mL and at 32.5 OC for 4 days. The maximum 8.075 and 8.77 % w/v for godere and s.potato respectively ethanol content was achieved at 4 days fermentation time. However, as fermentation time increased from 4 days it resulted in decreasing ethanol content.

Keywords : Bioethanol, Taro root, s. potato, hydrolysis, fermentation, S. cerevisiae and SHF.

Citation : Teshager Mekonnene Tekaligne et al. (2019). Bioethanol Production from Godere (Taro Root) (Colocasia Esculenta) and Sweet Potato (Ipomoea Batatas) using Saccharomyces Cerevisiae.V7I201 DOI : 10.5281/zenodo.2580472

Copyright : © 2019 Teshager Mekonnene Tekaligne. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Journal of Advanced Botany and Zoology

ISSN : 2348-7313

Volume 7 / Issue 2

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March 1, 2019
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