The manufacture of ethyI alcohol from starch contains the following steps
(i) Hydroiysis of starch 2(C6H10O5)n+nH2O50−60∘ Diatease maltasenC12H22O11
This step is called saccharification.
(ii) Fermentation maltasenC12H22O11+H2OMaltaseteastglucose2C6H12O6Zymase yeastethanol2C2H5OH+2CO2