70139 Sigma-Aldrich

Potato Dextrose Agar

for microbiology

Synonym: Potato Glucose Agar



Related Categories All Dairy Media (alphabetical), All Food Control Media (alphabetical), All Solid Media/Agars, Aspergillus, Candida,
grade   for microbiology
shelf life   limited shelf life, expiry date on the label
composition   agar, 15 g/L
  dextrose, 20 g/L
  potato extract, 4 g/L
final pH   5.6±0.2 (25 °C)
suitability   nonselective for Aspergillus
  nonselective for Candida
  nonselective for Molds and Yeasts (General Media)
  nonselective for Penicilliums
  nonselective for Pichia
  nonselective for Saccharomyces
  nonselective for Zygosaccharomyces



Recommended for the isolation and enumeration of yeasts and molds in dairy products and food.

Other Notes

Studies on contamination of yogurt by yeast1,2; For maintaining the stock culture of Rhodotorula glutinis for the production of extracellular lipase3; Identification of Aspergillus niger from infected onion tissue4

Same product — same quality — now Sigma-Aldrich brand

Price and Availability

Safety & Documentation

Safety Information

WGK Germany 
Protocols & Articles



Yeast is one of the most important microorganisms known and utilised by mankind. Ancient Middle Eastern civilisations used the organism to bake bread and to produce mead, beer and wine.
Jvo Siegrist
Analytix 2009, 5, 7.
Keywords: Antibiotics, Enzyme-linked immunosorbent assay, Fermentation, Microbiology, Molecular biology, Polymerase chain reaction, Reproduction, Vitamins

Peer-Reviewed Papers


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1. M. Dublin Green, S.N. Ibe J. Food Prot. 50, 193, (1987)

2. R.E. Beever, E.G. Bollard J. Gen. Microbiol. 60, 273, (1970)

3. D. Papaparaskevas et al. Biotechnol. Lett. 14, 397, (1992)

4. A. Behere et al. Enzyme Microb. Technol. 15, 158, (1993)

Conservation and diversity of seed associated endophytes in Zea across boundaries of evolution, ethnography and ecology. Johnston-Monje D PLoS ONE 6(6), e20396, (2011)


Calcineurin-responsive zinc finger transcription factor CRZ1 of Botrytis cinerea is required for growth, development, and full virulence on bean plants. Schumacher J Eukaryotic Cell 7(4), 584-601, (2008)


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