Studi Produksi Bioetanol untuk Peningkatan Budidaya dan Nilai Tambah Pascapanen Sagu (Metroxylon spp.) Asal Sorong

Abstract

Sago (Metroxylon spp.) is a potential starch-producing crop which produce 20 – 40 tonnes starch ha-1 year-1. Each years, big amount of sago starch are wasted because it is not exploited well. The people only utilize sago starch for consumption in daily food needs. The low utilization of sago reduces its harvest performances. Sago starch can be used as raw material for renewable alternative energy such as bioethanol. The main object of this study is to analyze the optimation of enzyme application to hydrolyze sago starch that were collected from Sorong and the ratio of water with starch usage in bioethanol fermentation. The second aim is to ensure the kind of sago starch that can be used to produce bioethanol, so that it becomes the driving force for sago farmers in the cultivation of sago intensively in Sorong District. This study was used enzyme to hydrolyze sago starch into liquid sugar. Fermentation of liquid sugar used yeast contained Saccharomyces cereviseae until it produces bioethanol. The sago starch are used in this study that is Iwarwo type. The highest etanol content was 10.93% at 72 hours after fermentation. The result was collected from condition of 1:5 sago starch with water ratio treatment, 1 mL of α-amylase enzyme kg-1 sago starch and 1.2 mL glucoamylase enzyme kg-1 sago starch.