Waste potatoes as an alternative source for the production of Bioethanol by co-culture of Saccharomyces cerevisiae and Aspergillus niger

Bioethanol is one of the energy sources that can be produced by renewable sources. Waste potatoes relatively inexpensive as compared with other feedstock considered as food sources. However, a pretreatment process is needed. In Chitrakoot a much amount of potatoes are produced every year. This research was carried out to find out the optimum conditions for bioethanol production. The protocol was used by co-cultures of Saccharomyces cerevisiae and Aspergillus niger under simultaneous saccharification and fermentation (SSF). Bioethanol production was done at different temperature (25 to 35°C), pH (4 to 6) and fermentation protocol was done at 96, 120, 144 hours. The optimal condition for the production of bioethanol was 6 pH and 30°C temperature. The fermentation of potatoes was the highest at 144 hours with yeast concentration 4 to 6 %.The maximum ethanol yield from waste potatoes was 11.14% and amount of ethanol content increased with the increase in fermentation time.