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Y0626 Sigma-Aldrich

Yeast Nitrogen Base Without Amino Acids

Yeast classification medium used for selecting yeasts based on amino acid and carbohydrate requirements

  •  NACRES NA.85



General description

Yeast Nitrogen Base is considered ideal for culturing wild type yeast. The presence of amino acid is known to prevent selectable marker utilization. Hence, this media is formulated without amino acids and is useful for cloning and manipulation of yeast artificial chromosome.


Yeast Nitrogen Base Without Amino Acids has been used:
• in synthetic complete supplement mixture (SC)-Leu media used for Y. lipolytica culturing and characterization
• as a component of selective liquid media for uracil auxothrophic growth in yeast
• to evaluate the transformation efficiencies of S. cerevisiae strains, under different nutrient conditions


Component, amount (μg/L unless indicated)

Nitrogen Sources:
Ammonium sulfate, 5.0 g/L

Biotin, 2.0
Calcium pantothenate, 400
Folic acid, 2.0
Inositol, 2.0 mg/L
Nicotinic acid, 400
p-Aminobenzoic acid, 200
Pyridoxine HCl, 400
Riboflavin, 200
Thiamine HCL, 400

Trace Elements:
Boric acid, 500
Copper sulfate, 40
Potassium iodide, 100
Ferric chloride, 200
Manganese sulfate, 400
Sodium molybdate, 200
Zinc sulfate, 400

Potassium phosphate monobasic, 1.0 g/L
Magnesium sulfate, 0.5 g/L
Sodium chloride, 0.1 g/L
Calcium chloride, 0.1 g/L


Make a 10x concentrated stock solution by stirring to suspend 6.8g yeast nitrogen base powder , 5 g glucose, and 5-10 mg of appropriate amino acid in 100 mL water. Warm if necessary to aid solubilization. Filter sterilize and store at 2-8°C.

Dilute the 10x concentrated stock to a 1x working solution by adding 100mL concentrated stock to 900mL sterile water.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


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Peer-Reviewed Papers


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