The fermentation studies were carried out using baker's yeast (Saccharomyces cerevisiae) in the hydrolysatesobtained from pretreated, enzymatic hydrolyzed fruit pulps and peels. The hydrolysates were autoclaved at 121ºC for15 min and the flasks were then cooled to room temperature. The pH of the fermentation medium was adjusted to 6 andthe yeast was added at a rate of 1g yeast/ 1000ml of mixture. In order to study the effect of enzymatic hydrolysis onethanol yield in fruit pulps, a separate set of fermentation experiment was carried out in a similar manner using thehydrolysates obtained from both the pretreatments (LHW & DAP) (with out enzymatic saccharification).Fermentation was allowed for 3 days (72 h) at 35ºC and samples from the medium were withdrawn periodically at 6hinterval from the replicated fermentar flasks to determine yeast cell growth, ethanol productivity and residual sugarcontent. The ethanol concentration was determined based on the density of alcohol distillate at 20ºC and expressed inweight % (w/w) [21]. The fermentation efficiency is calculated using the following formula [22]