The fermentation of L-sorbose by Gluconobacter melanogenus. II. Inducible formation of enzyme catalyzing conversion of L-sorbose to 2-keto-L-gulonic acid

Cell-free extracts of Gluconobacter melanogenus cells grown in L -sorbose-containing media contained an enzyme system capable of converting L -sorbose to 2-keto-L -gulonic acid while cells grown in glycerol media did not. This inducible enzyme was located in the participate fraction of the cells.