BIOETHANOL FROM PINEAPPLE PEEL WITH SACCHAROMYCES CEREVICEAE MASS AND FERMENTATION TIME VARIATION

Abstract

As a waste from pineapple, pineapple peel still contains high carbohydrate and glucose.
The aim of this study was to made bioethanol from pineapple peel with variation from
Saccharomyces cereviceae mass addition and fermentation time variation. The variables
used are Saccaromyces cereviceae mass 20, 30, 40 grams, fermentation pH 4 and 5,and
the length of fermentation time 2, 4, 6, 8, and 10 days. The analysis of the obtained results
showed: the initial glucose level of pineapple peel extract 8.5325%, the highest levels of
glucose from fermentation was 8.4275%, at the addition of 30 grams Saccaromyces cerevisiae,
length of fermentation time was 2 days, and the highest levels of bioethanol was
3.965%, it was acquired on the addition of 30 grams Saccaromyces cerevisiae and length
of fermentation time 10 days. The conclusion of this study is the addition of Saccaromyces
cerevisiae and the length of fermentation time give a significant effect on the bioetanol
produced from pineapple peel extract.
Key words: bioethanol, saccharomyces cereviceae, pineapple peel