β-Alanine medium
β－アラニン培地べーたあらにんばいちβ-Alanine medium is a type of culture medium used in sake production to test the purity of a specific yeast. It takes advantage of the characteristic that Kyokai No. 7, a sake yeast, cannot grow at 35°C. Other sake yeasts grow at this temperature, but only Kyokai No. 7 does not, so this medium can be used to confirm the yeast's purity. The method plays an important role in quality control in sake brewing.