Definitie : Bakkersgist (Saccharomyces cerevisiae) wordt behandeld met ultraviolet licht om de omzetting van ergosterol in vitamine D2 (ergocalciferol) op te wekken.
Definition : Baker's yeast (Saccharomyces cerevisiae) is treated with ultraviolet light to induce the conversion of ergosterol to vitamin D2 (ergocalciferol).