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You are here:Home » Culture Media » Media-Microbiological » Soytone (Papaic/Pancreatic Digest of Soybean Meal, Peptone S)

Soytone (Papaic/Pancreatic Digest of Soybean Meal, Peptone S)


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A general purpose peptone that is used for growth promotion in many media formulations including tryptic soy broth and agar.
Catalog #S5366
Appearance Supplied as a medium tan crystalline powder
Amino Nitrogen: 5%
Total Nitrogen: 13%
pH (2%): 6.8 ± 0.4
Loss on Drying: 5%
Residue on Ignition: 13%
Growth Supporting Properties:
Agar Formulation: Growth Test
Broth Formulation: Growth Test
Standard Plate Count: 5000CFU/g
Molds/Yeasts: 100CFU/g
Coliforms: 10CFU/g
E. coli: Negative
Salmonella: Negative/25g
Note Soytone has been heated to a minimum of 80°C for a minimum of 1 hour, including a minimum of 5 minutes at a minimum of 105°C. It is dried at a minimum of 140°C.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

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