RAPID DETECTION OF YEASTS IN QUARG

A method is described, which (i) enables a rapid detection of yeasts in quarg, (ii) records low yeast contents, and (iii) is practicable with simple equipment. The quarg is mixed with the same volume of yeast extract-glucose-chloramphenicol solution and incubated at 26-degrees-C under shaking subsequently the quarg-nutrient mixture is streaked, fixed and stained. After 40 to 48 h yeasts can be detected microscopically in very low concentrations (< 0.03/g quarg).