Pengaruh Suhu dan Volume Starter Dalam Pembuatan Bioetanol Dari Nira Aren (Arenga Pinnata Merr)

Abstract

This research studies about determine the effect of temperature and volume of starter on yield and concentration of bioethanol produced from nira Aren (Arenga pinnata Merr). Biocatalyst used was Saccharomyces cerevisiae. The experimental variables were temperature and volume of starter doing anaerobic fermentation process. The experiment started with preparation of a starter followed by fermentation process. The product obtained from distillation process at temperature of 85 ° C. It can be conclude that high ethanol yield and concentration obtained at low temperature with the addition of the starter, it will produce the higher content and yield of ethanol until it reaches the maximum point, obtained on the condition at a temperature of 32 ° C and 35% starter amounted to 43.3165% (v / v) and 38.1430%. If it exceed that point, the changes of temperature and the addition of starter will decrease the concentration and yield of ethanol produced