Studies on Diacetyl Part V

Does yeast produce diacetyl

Abstract

Dried sweet potato (1kg) hydrolysed with H₂SO₄ was carefully fermented with distillery yeast Rasse XII at 27°.
There was found no bacteria in the fermented liquid.
About 4 L of the fermented liquid was distilled and in the distillate diacetyl was detected as red colored crystals of Ni-dimetyl glyoxime.