Kirin Beer Kabushiki Kaisha

Hidetaka Sone

Nobuyuki Hayashi

Osamu Kobayashi

Takashi Inoue

Junichi Tanaka

Gene conferring flocculating property on yeast and gene product thereof

DNA strand having an ability in biotechnological production of .alpha.-acetolactate decarboxylase is disclosed. The DNA strand is characterized in that it has a nucleotide sequence coding for a polypeptide whose amino acid sequence is substantially from A to B of FIG. 1 and which has .alpha.-acetolactate decarboxcylase activity. Also disclosed is a yeast which belongs to Saccharomyces cerevisiae and which has been transformed by the DNA strand. The yeast is characterized by the face that its .alpha.-acetolactate producing ability is reduced, and will thus produce an alcoholic liquor such as beer which contains no or little diacetyls which have come from their precursor, namely .alpha.-acetolactate.

Growing community of inventors

Takasaki, Japan

Hidetaka Sone