M-Green Yeast & Mold

M-Green Yeast and Mold Broth is an improved modification of the liquid medium M-Yeast and Mold
Broth. It was developed to improve efficiency of detection and enumeration of fungi in sugar based
drinks using the membrane filtration method. This medium has a low pH, which inhibits bacterial
growth. Bromocresol green indicates pH change: yellow (acid reaction), green (alkaline reaction).
When bromocresol green diffuses into fungal colonies it has an alkaline reaction, allowing easily
identification. Metabolic by-products from the developing colonies diffuse into the surrounding
medium, further reducing the pH which aids in the inhibition of bacterial growth, but also produces an
acid reaction which causes residual bromocresol green to change to yellow.