2026-05-03T08:48:59Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/00007761 2021-12-13T00:25:15Z 1582963390870:1582967436313 user-uy

Assessment of Ethanol Preparation by Acid Hydrolysis and Fermentation of Grasses Soe Soe Than Two different grasses, Pennlselum hordeondes Lam. and Chloris Barbara Sw., were chosen as sources of cellulosic materials for the preparation of ethanol. Fresh stems of grasses were processed for conversion of cellulose into fermentable sugars by acid hydrolysis using sulphuric acid (H2SO4). Response Surface Methodology (RSM) was applied to optimize the precess variables such as acid concentration, acid volume and hydrolyzing time for the yield of fermentable e sugars during acid hydrolysis. The maximum yield of fermentable sugar of 55 mg/g was obtained at the acid concentration of 3.4% (V/N), acid volume of 135 ml and hydrolyzing time of 86 min for 30 g of freshly crushed stems of grasses. Baker's yeast (Saccharomyces cerevisiae) was used in fermentation of the resulting sugars under anaerobic condition. The maximun yields of ethanol by volume were 3.83% and 24.88% with the yeast concentration s of 3g/L and 5g/L respectively. 2014-01-01 http://hdl.handle.net/20.500.12678/0000007761 https://meral.edu.mm/records/7761