DESCRIPTION:

Peptic Digest of Meat USP is used for the growth of yeasts and molds, enterobacteria, staphylococci, and numerous other microorganisms. After addition to blood agar, it favors the growth of pneumococci, as well as the production of characteristic hemolysis. Because of its high content of sulfur compounds, it is used for the detection of hydrogen sulfide producers.

TYPICAL ANALYSIS

Physical characteristics :

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

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

- pH of the 5% aqueous 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 ..................................................................................................................... 12,5 ± 1,5 %

- α amino Nitrogen.................................................................................................................. 4,0 ± 1,0 %

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

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

- Chlorides (expressed as NaCl) .........................................................................................less than 5 %

- Calcium ....................................................................................................................................... 0,05 %

- Sulfuric ash .................................................................................................................. less than 15,0 %

- Loss on Drying................................................................................................................ less than 5,0 %

Total Amino Acids (expressed as g for 100 g of product) :

- Aspartic acid ..................................................................................................................................... 7,9

- Threonine ......................................................................................................................................... 2,8

- Serine ............................................................................................................................................... 2,6

- Glutamic acid .................................................................................................................................... 9,3

- Proline .............................................................................................................................................. 5,6

- Glycine .............................................................................................................................................. 6,8

- Alanine .............................................................................................................................................. 6,5

- Valine ................................................................................................................................................ 5,1

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

- Methionine ........................................................................................................................................ 1,5

- Isoleucine ......................................................................................................................................... 3,2

- Leucine ............................................................................................................................................. 6,6

- Tyrosine............................................................................................................................................. 2,0

- Phenylalanine ................................................................................................................................... 2,5

- Lysine ............................................................................................................................................... 4,8

- Histidine ............................................................................................................................................ 2,9

- Arginine ............................................................................................................................................ 3,5

- Tryptophan ....................................................................................................................................... 0,8

 Microbiological characteristics :

- Indole production........................................................................................................................ positive

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

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

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

PACKAGING

Dehydrated medium : 
A1708HA - 500 g bottle
A1708GC - 5kg drum

PEPTONE - CULTURE OF VARIOUS MICROORGANISMS