> "Yeast can degrade ethanol," says microbiologist Benjamin Tu of the University of Texas Southwestern Medical Center. "But they love other sugars — glucose, maltose — more. When those sugars are around, the cells turn off the genes needed for alcohol degradation."
edit: ah, I read TFA:
> "Yeast can degrade ethanol," says microbiologist Benjamin Tu of the University of Texas Southwestern Medical Center. "But they love other sugars — glucose, maltose — more. When those sugars are around, the cells turn off the genes needed for alcohol degradation."