DESCRIPTION:

As a result of its balanced content of essential amino acids, carbohydrates and vitamins, Papaic Digest of Soybean Meal USP leads to the very rapid and abundant growth of a wide variety of microorganisms, including yeasts and molds. It is often combined with Tryptone in Tryptone Soy Broth and Tryptone Soy Agar for the growth of fastidious microorganisms.

TYPICAL ANALYSIS

Physical characteristics :

- Appearance, color ..............................................................................................................beige powder

- Solubility in water at 5 % ...................................................................................................................total

- pH of the aqueous 5 % solution ................................................................................................ 7,0 ± 0,5

- Stability at pH 7,0 after autoclaving for 15 minutes at 121 °C........................................................stable

Chemical characteristics :

- Biuret reaction ........................................................................................................................... positive

- Total Nitrogen .................................................................................................................... 10,0 ± 0,7 %

- α amino Nitrogen ................................................................................................................. 2,5 ± 0,7 %

- Indole ........................................................................................................................................... absent

- Nitrites ......................................................................................................................................... absent

- Chlorides (expressed as NaCl) ........................................................................................ less than 2 %

- Calcium ......................................................................................................................................... 0,5 %

- Sulfuric ash .................................................................................................................. less than 17,0 %

- Loss on drying ............................................................................................................... less than 6,0 %

Total amino acids (expressed as g per 100 g of product) :

- Aspartic acid....................................................................................................................................... 7,2

- Threonine ......................................................................................................................................... 2,5

- Serine ............................................................................................................................................... 3,4

- Glutamic acid .................................................................................................................................. 13,2

- Proline .............................................................................................................................................. 4,2

- Glycine .............................................................................................................................................. 2,9

- Alanine .............................................................................................................................................. 2,9

- Valine ................................................................................................................................................ 4,6

- Cystine .................................................................................................................................... not dosed

- Methionine ........................................................................................................................................ 0,8

- Isoleucine ......................................................................................................................................... 3,0

- Leucine ............................................................................................................................................. 5,2

- Tyrosine ............................................................................................................................................ 1,3

- Phenylalanine ................................................................................................................................... 3,4

- Lysine ............................................................................................................................................... 4,6

- Histidine ............................................................................................................................................ 1,9

- Arginine ............................................................................................................................................ 4,2

- Tryptophan ....................................................................................................................................... 1,1

Microbiological characteristics :

- Indole production...................................................................................................................... negative

- Hydrogen sulfide production ...................................................................................................... positive

- Acetylmethylcarbinol production................................................................................................. positive

- Detection of fermentable sugars ............................................................................................... positive

PACKAGING

Dehydrated medium : 
A1601HA - 500 g bottle

PEPTONE - CULTURE OF VARIOUS MICROORGANISMS