The best recipe of adding beer-yeast autolysate 15%, crude sugar 4% and citric acid 0.3% is introduced.

On the other hand, sugar mills can rehandle and process the stored A-molasses to produce crude sugar and improve the competitive ability in market.

Sucrose is available for use in fermentation processes either in crystalline form or in crude form as raw juice or molasses (a by-product of sugar manufacture).