Gelatin, Granules, Porcine (Powder)

Supplier:

United States Biological

Cat no: G2024

Gelatin, Granules, Porcine (Powder)

Gelatin is a protein source and solidifying agent for use in preparing microbiological culture media. Gelatin is a protein of uniform molecular constitution derived chiefly by the hydrolysis of collagen (1). Collagens are a class of albuminoids found abundantly in bones, skin, tendons, cartilage and similar animal tissues (1). Koch introduced Gelatin into bacteriology when he invented the gelatin tube method in 1875 and the plate method in 1881. This innovation, a solid culture method, became the foundation for investigating bacterial growth (1). Gelatin-based media were soon replaced by media containing agar as the solidifying agent. Gelatin is used in culture media for determining gelatinolysis (elaboration of gelatinases) by bacteia. Several media containing Gelatin are specified in standard methods for multiple applications (2,3).\n\nThe collagen for this product was derived from porcine skin.\n\nPrinciples of the Procedure\nThe melting point of a 12% concentration of gelatin is between 28-30 degrees C, allowing it to be used as a solidifying agent. Certain microorganisms elaborate gelatinolytic enzymes (gelatinases) which hydrolyze gelatin, causing liquefaction of a solidified medium. Gelatin is also used as a nitrogen and amino acid source.\n\nStorage and Stability:\nStore sealed container at RT. Store opened container in a low humidity environment at the same storage temperature. Protect from moisture and light by keeping container tightly closed\n\nCountry of Origin: USA, Canada

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SPECIFICATIONS

Catalog Number

G2024

Size

500g

References

1. Gershenfeld, L., Tice, L.F., Gelatin for bacteriological use. J. Bacteriol. 41: 645-652 (1941). 2. U.S. Food and Drug Administration. Bacteriological analytical manual, 8th ed., (1995), AOAC International, Gaithersburg, MD. 3. Eaton, A.D., Clesceri, L.S., Greenberg, A.E. (eds.). Standard methods for the examination of water and wastewater, 19th ed., (1995), American Public Health Association, Washington, D.C.

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SUPPLIER INFO

United States Biological

Address:

4 Technology Way, Salem, MA 01970, US

Phone:

+1 800 520 3011

Website:

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