ETHANOL PRODUCTION BY EFFECTIVE MICROORGANISM (M1) ISOLATED FROM SUGAR CANE FACTORY UNDER NON-STERILIZED CONDITION

Tóm tắt

The effective microorganism (M₁) isolated from sugar cane factory in the Northern-East of Thailand was selected for ethanol production. Ethanol production from sugar cane molasses under non-sterilized condition was evaluated in batch fermentation. The highest yield of ethanol was achieved in molasses fermentation media containing 155 g/l total sugar, supplemented with 2.4 g/l (NH₄)₂SO₄, 1.2 g/l KH₂PO₄ and  0.1 g/l MgSO_4, in shaking flask (100 rpm) at room temperature after 48 h fermentation time. Comparison with sterilized condition, the same highest ethanol yield of 79 g/l indicated that no contamination occurred in the non-sterilized process.