Recently, ethanol production potential of waste bananas has been assessed [63]. Ethanol yield from normal banana was found to be as: ripe whole fruits 0.091, pulp 0.082, and peel 0.0061/kg of whole fruits. The green fruit gave 0.090, normal ripe 0.082, and overripe 0.0691/kg of ethanol. Enzymatic hydrolysis was necessary for higher ethanol yield while dilution with water was not essential for effective fermentation.

9.7.2 Potato Waste

The use of potato peel waste for the production of alcohol has also been made [17]. The acidified peel waste (pH 6) is used for ethanol production.