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Utilization of lipids-free waxy starch by distillery yeasts in fuel ethanol production can contribute to better management of renewable resources, like cereals, especially maize Zea mays L. But the efficient conversion of starch into glucose-rich fermentable substrate, and subsequently to ethanol, needs more research on hydrolysis and fermentation conditions. The aim of this study was to evaluate the lack of natural corn grain lipids on the process of simultaneous saccharification and fermentation using chemometric techniques of designed experiments, commercial enzymatic preparations and distillery yeasts Saccharomyces cerevisiae CCY-11-3. Based on the results and statistical software support we can conclude that extraction of lipids from corn grains did not lead to statistically significant increase or decrease of glucose concentration in starch hydrolysis. The ethanol concentration in fermentation mash according to analysis was not statistically significantly affected by lipids extraction. The separated lipids could serve as a source of very valuable corn oil.

Lipids-free waxy corn starch as a substrate for distillery yeasts Saccharomyces cerevisiae