Freilich Ezekiel Q. Areola (March 2011)
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
Ethanol is a volatile, colorless, odorless liquid which can be produced from scratch crops. Yam beans are an underutilized starch crop. This study determined the feasibility of producing ethanol from yam beans using crude methods. This study aimed to characterize the ethanol which can be produced by yam beans. The yam beans were broken down by grating. They were then hydrolyzed, saccharified, fermented for 7 days using S. cerevisiae and then distilled. Total recovered volume was 5ml, which is a 0.08% to 0.25% recovery. The recovered liquid had 6.5 to 7pH, a clear appearance, no turbidity, low amount of sediments and mass density of 0.83 to 0.88.