Isolation and Identification of New Acid-tolerant and Starch-degradable Yeasts

Abstract

Two strains of acid-tolerant and starch-degradable yeast were isolated from rivers flowing in Kusatsu and Manza, considering an effective reuse of great mass of starch-based biodegradable plastic. The isolated strains could grow in acid media of pH 1.8 and were identified as Candida fluviatinis and Candida intermedia. The yeasts could assimilate many carbon sources and ferment glucose and sucrose in acid media to alcohol.