Abstract
This research work aim to investigate the production of bio-ethanol from potato peel feedstock. Saccharomyces cerevisiae was used for the fermentation during the investigation. Fermentation was done over a period of 168 hours. The absorbance of the resulting solution after hydrolysis of the feedstock was measured at 540nm using spectrophotometer. There was optimum ethanol production after 72 hours. With the change in the concentration of yeast, the time required for the completion of fermentation decreased dramatically. Using a 2ml, 4ml, 6ml, 8ml yeast inoculum, maximum ethanol production was completely achieved in 1, 2, 3, 4, 5, 6, 7 days respectively. The maximum ethanol yield from waste potatoes was 2.1% (v/v) with a yeast growth of 8.9*10-5. The amount of ethanol content increased with the increase in substrate concentration. The result of this research may serve as a guide to bio technologist on how best to produce bio ethanol from potato peel waste feed stock and other vegetables to give maximum yield.
Keywords: Research, Bio-ethanol, ethanol, hydrolysis, absorbance, spectrophotometer and potatoes
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