TITLE:
Optimum Conditions for Bioethanol Production from Potato of Bangladesh
AUTHORS:
Abul Kalam Azad, Nilufa Yesmin, Shanjit Kumar Sarker, Abdus Sattar, Rezaul Karim
KEYWORDS:
Potato, Bio-Ethanol, Fermentation, Alpha-Amylase
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.5 No.6,
May
9,
2014
ABSTRACT: Bangladesh produces
a huge amount of potatoes every year. This research was carried out to find the
optimum conditions for bioethanol production from potato of Bangladesh. From
this study, optimum growth of yeast (Saccharomyces
cerevisiae CCD) was observed at pH 6.0 and temperature 31°C. Addition of a small
amount of alpha-amylase enzyme to potato solution was found to enhance the
potato starch degradation and made the fermentation process quicker. This study
observed that 1750 unit alpha-amylase is enough to degrade the starch in 15% of
500 ml potato starch solution. From fermentation time study, 6-day incubation
time was found to be enough to complete the fermentation process and optimum
production of bioethanol form potato starch. Suitable concentration of potato
in fermentation process was determined using five different potato solutions
(5%, 10%, 15%, 20% and 30%). A highest production of bioethanol was found in 20% potato treatment. Therefore, 20% potato
solution is recommended for high-scale production of bioethanol from potato
starch.