Figure 6
From: A general method for selection of riboflavin-overproducing food grade micro-organisms
Riboflavin produced by roseoflavin-resistant P. freudenreichii B374 mutants. The riboflavin concentration was determined in the cell free supernatant after the cells entered stationary phase. The solid bars represent the levels produced by the roseoflavin-resistant strains, while the open bars represent the wildtype strain concentrations.