Industrial production of ethyl alcohol by fermentation.
1. Industrial production of ethyl alcohol by fermentation The raw material used for the large scale production of ethyl alcohol by the process of fermentation Molasses and starch. 1.1. FROM MOLASSES In our country molasses is the chief raw material for the production of ethyl alcohol. Molasses contains about 30% sucrose and about 32% invert sugar . As strong sugar concentration is not suitable for fermentation by yeast, it is diluted with water to a 10% sugar solution called " mash ". It is then transferred to a large steel tank called fermenter and made slightly acidic (PH 4.0 to 5.0) by adding sulphuric acid . Acid prevents the growth of unwanted bacteria and promotes vigorous growth of yeast cells beneficial for alcoholic fermentation. Required amount of ammonium sulphate and ammonium phosp...