Screening of Yeast Strains for Ethanol Production by Acorn Starch Fermentation

[Objective] To screen out high performance excellent yeast strains with acorn starch as fermentation raw material. [Method] The appropriate strains were selected from several commonly used yeasts in industry,the fermentation performance,alcohol yield and the content of residual sugar were compared. [Result]Compared with other strains,yeast of Nanyang No. 6 has higher alcohol yield,lower residual reducing sugar,and excellent fermentation performance; Lanzhou L166 has higher fermentation performance and good tolerance,Nanyang No. 6 and Lanzhou L166 are appropriate strains for producing ethanol by acorn starch fermentation. [Conclusion]In practical production process,appropriate strains should be selected according to composition of acorn raw material.

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