Alkaline hydrolysis of starch and lignocellulose waste from durian seed in bioethanol production H C Theofany, M. Yheni, Y. Mulyaningsih, A D Pramiesta, H B Aditiya
Sampoerna University
Abstract
Global carbon emission in this past decade have significantly increased because of the development of Industrialisation. To reduce the carbon emission in atmosphere, second generation bioethanol production is favoured as a green, alternative energy for internal combustion engine. In this project, durian seeds are chosen to be the promising potential feedstock due to its abundance, especially in tropical country, such as Indonesia. To obtain the starch and lignocellulose waste, durian seeds were heated at 120 ℃ for 7 hours to remove the moisture content. The dried durian seeds were then grinded with the minimum size of 1 mm. Ratio between durian seeds starch and lignocellulose is selected to observe the characteristics in producing fermentable sugar with a fixed alkaline concentration of 1 Molar. Hydrolysis temperature on the 5 minutes duration of ultrasonic treatment was also chosen to be the variable of experiment to obtain the most promising reducing sugar result. Samples were assayed for the reducing sugar content through DNS method. Once it has done, the theoretical ethanol could be determined. Thus, the bioethanol from the durian seeds are produced to degrade the dependency of fossil fuel energy consumption.
