POTENSI BIOETHANOL DARI LIMBAH KULIT ARI KEDELAI LIMBAH PRODUKSI TEMPE

Abstract

Mochammad Wachid

Staf Pengajar Jurusan Ilmu dan Teknologi Pangan, Fakultas Pertanian Peternakan
Universitas Muhammadiyah Malang
Alamat Korespondensi : Jl. Raya Tlogomas 246 Malang
Email: mochammadwachid@yahoo.com

ABSTRACT

Ethanol is a colorless clear liquid, volatile, has a pungent aroma and a patio painful skin. In the
world of education the ethanol is used as a disinfectant and solvent in various studies, besides that
ethanol can also be a source of energy to overcome the energy crisis. In previous studies of soybean
husk waste tempe production which has been a waste and can be raw material for ethanol fermentation
process. The purpose of this research is to increase ethanol soybean husk production, by controlling
the temperature and pH of the fermentation process.
The research was conducted in the ITP FPP UMM laboratory by controlling the fermentation
temperature at temperatures 30oC, 35oC, 40oC and pH 4.5, 5, 5.5. The parameters measured were
the levels of ethanol, reducing sugar and pH changes during fermentation 12, 24 and 36 hours.
The results showed that the treatment temperature is 30oC with pH 4.5 produce ethanol with
the highest levels of 4.071% at the 36. while the production of ethanol using the fastest treatment at
40 oC ph5, 5 at the 12 with 2.748% ethanol levels but decreased thereafter.

Keywords: ethanol, soy bran, temperature, pH, fermentation.