Agar (aus Red Alga Rhodophyceae), blassgelbes Pulver USP
Lieferant: ICN Biomedicals
Synonyms:
Agar Agar
Agar is a polysaccharide complex extracted by bleaching and hot water treatment of agarocytes from the red alga Rhodophyceae, and usually consisting of the genera Gelidium, Acanthopeltis, Ceramium, Pterocladia and Gracilaria. The algae are typically found in the Pacific and Indian Oceans and in the Sea of Japan. It is primarily composed of two different units: Agarose and Agaropectin; Agarose is a neutral gelling component which is composed of a linear polymer of alternating D-galactose and 3,6-anhydrogalactose units. Agaropectin is a non-gelling component which consists of D-1,3-glycosidically linked D-galactose units, some of which are sulfated at the 6th position.
Agar is typically used in (According to the Merck Index): Substitute for gelatin, isinglass, etc. in making emulsions including photographic, gels in cosmetics, and as thickening agent in foods especially confectionaries and dairy products; in meat canning; in production of medicinal encapsulations and ointments; as dental impression mold base; as corrosion inhibitor; sizing for silks and paper; in the dyeing and printing of fabrics and textiles; in adhesives. In nutrient media for bacterial cultures.
- USP Grade
- Culture Media
- Presentation: Pale Yellow Powder
- Agar is strongly hydrophilic and can slowly absorb about 20 times its weight of cold water, swelling in the process. Hot water is usually necessary to solubilize agar. Insoluble in alcohols.
- Storage temperature: Room temperature
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Lager Temperatur:
Raumtemperatur |
MDL Number:
MFCD00081288 CAS-Nummer: 9002-18-0 |
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Spezifikation Testergebnisse
| Identity Test A | Passes |
| Identity Test B | Passes |
| Microbial Limits (Salmonella) | Negative |
| Water | ≤20% |
| Total Ash (dw) | ≤6.5% |
| Acid Insoluble Ash | ≤0.5% |
| Foreign Organic Matter | ≤1.0% |
| Foreign Insoluble Matter | ≤1.0% |
| Arsenic | ≤3 ppm |
| Lead | ≤10ppm |
| Heavy Metals | ≤40ppm |
| Foreign Starch | Passes |
| Gelatin | Passes Test |
| Water Absorption | Passes Test |
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