Assimilation spectrum of the yeast Candida utilis 49 used for producing fodder yeast from synthetic ethanol.

Oxidizing and assimilating ability of the yeast Candida utilis 49 was tested with 21 different low-boiling organic compounds which come as components of raw synthetic ethanol. The highest yields of yeast dry weight were obtained with ethanol (72.0%), propanol (48.2%), ethyl acetate (43.4%) and acetic acid (34.2%). To a minor extent, the yeast was capable of utilizing also 2-propanol, butanol and 2-butanol; it oxidized most of the compounds tested.