YPD-galactose-medium (solid):
Composition: (1000 ml)
- 20 g tryptone/peptone.
- 10 g Yeast extract.
- 100 ml 20% galactose solution.
- 20 g of Agarose.
Procedure:
- Dissolve the reagents in 900 ml deionized water.
- If you are making plates, add the agar after dissolving the reagents above.
- Autoclave at 15 psi, 121 ℃ for 20 minutes.
- Cool to 50 ℃ and add 100 ml of filter-sterilized 20% glucose or 200 ml of filter-sterilized 10% raffinose.
- Pour plates and allow to harden. Invert the plates and store at 4 ℃. Plates are stable for 6 months.