Acta Scientific Microbiology (ISSN: 2581-3226)

Research Article Volume 4 Issue 11

Effects of Pretreatments on the Production of Bioethanol from Manihot Esculenta Crantz Peels Using Zymomonas mobilis

Deke Victoria Adegunloye and Janet Olawumi Olowe*

Department of Microbiology, School of Life Sciences, Federal University of Technology Akure, Nigeria

*Corresponding Author: Effects of Pretreatments on the Production of Bioethanol from Manihot Esculenta Crantz Peels Using Zymomonas mobilis

Received: September 01, 2021 ; Published: October 25, 2021



Waste management is a global issue which has become increasingly serious with population and economic growth, particularly in Nigeria. Bioethanol is a suitable substitute to hydrocarbon as it is produced by fermenting carbohydrate biomass derived from plants. This research investigation, the use of cassava peels serves as the main carbon source for production of bioethanol. Bioethanol production from the peels of cassava was examined using co-culture of Aspergillus niger and Zymomonas mobilis through simultaneous saccharification and fermentation process. 0.1 M sulphuric acid and sodium hydroxide was used for substrate pretreatment. Aspergillus niger and Zymomonas mobilis were added to ferment the peels at 28oC for 5 days during which the total bacterial and fungal count, mineral composition, cellulose content, reducing sugar, pH, temperature and the quantity of bioethanol produced were determined. The bacterial count (3.58 x 103), fungal count (2.81 x 103), mineral composition (15.64 mg/100g), cellulose content (66.08% and 69.29%), reducing sugar (6.98 ± 0.01 and 8.98 ± 0.00 g/l), pH (7.67), temperature was at 36oC at the initial stage of fermentation and later remain static at 28oC till 5th day of fermentation, the total quantity of bioethanol yield obtained was (17.08 g/ml) after the 5th day of fermentation. Fermented hydrolysate was distillated at 78oC. Therefore, Aspergillus niger and Zymomonas mobilis are proven effective for saccharification and fermentation of cassava peels for bioethanol production as an alternative fuel and energy source.

Keywords: Bioethanol; Cassava Peels; Pretreatment; Fermentation



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Citation: Deke Victoria Adegunloye and Olawumi Janet Olowe. “Effects of Pretreatments on the Production of Bioethanol from Manihot Esculenta Crantz Peels Using Zymomonas mobilis”. Acta Scientific Microbiology 4.11 (2021): 66-74.


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