期刊名称：International Journal of Environment and Bioenergy
电子版ISSN：2165-8951
出版年度：2012
卷号：3
期号：2
页码：111-120
语种：English
出版社：Modern Scientific Press
摘要：Over the past years, lack of energy fossil has become important issue around the world, especially in developing countries such as Indonesia. Because of that, alternative energy is needed to replace utilization of fossil fuels. Bioethanol is providing one window of potential alternative energy. Lignocellulosic from oil palm empty fruit bunch (EFB) could be a promising bioethanol raw material because it will not interfere food supply. Simultaneous saccharification and fermentation process (SSF) is known as a technique which reduces the number of process for effectiveness of reactor amount and finally reduces the cost production. Rhizopus oryzae is a filamentous fungus, which can produce L(+)-lactic acid and ethanol as the main by-product. The SSF experiments were carried out anaerobically at 37 ℃, 150 g/L dry matter (DM) solid substrate concentration and 20 filter paper unit (FPU)/g DM of a commercial enzyme cellulase. The experiments were stopped after four days to achieve higher ethanol concentration. Strain was cultivated on pre-treated EFB with variation of pH, and the production of glucose and ethanol was investigated. The ethanol yields by Rhizopus oryzae on pH 4.5, 5.0 and 5.5 were 20.51, 33.08, and 26.78 g/L medium, where the glucose concentration at the first day were 56-62 g/L medium. The ethanol yields based on substrate were 0.14, 0.22 and 0.18 g/g DM pretreated EFB.
关键词：oil palm;empty fruit bunch;bioethanol;Rhizopus oryzae;fermentation
