Carrageenan (also called carrageen gum) is a kind of natural polysaccharide hydrophilic gum extracted from sea plant - red algae and, normally, is white or yellow in the form of powder, odorless and tasteless. The gel forming Carrageenan is of heat reversibility. i. e., the gel turns into solution when being heated and turns back to gel again as soon as the solution is cooled. Carrageenan possesses very favorable water-solubility and starts melting at 70, and absolutely melts at 80. Meanwhile, it features fine stability so that long-term placement may not reduce its gelling intensity and viscosity. The product won't be hydrolyzed even if being heated in neutral and alkaline solution. When combined with konjac gum, locust bean gum and some other kind of gums, Carrageenan can give a remarkable performance for synergism and distinctly alter its gelling characteristics so as to make the gel full of elasticity and water preserving capability.
Carrageenan is extensively applied in many fields such as foodstuff, medicine, daily chemical industry, biochemistry, architectural coatings, textile dyeing, agriculture etc.
In food industry, carrageenan can be used as gelling agent, thickener, stabilizer, suspending agent and clarifier, and can be used in products such as soft candy, jelly, sausage, canned meat, ice cream, beverage, condiment, milk, bionic food, jam, canned thick soup, beer, bread, pet food and so on; In pharmaceutical industry, it can be used as medicine suspending agent and dispersant, and can be used to produce capsule products etc. In daily chemical industry, it can be used in toothpaste, detergent, cosmetics and air freshener; In biochemistry, carrageenan can be used as carrier of microorganism and immobilized cells; In other fields, it can be used as the thickener for water-based paint, ceramic glaze and water color, and the suspending agent for graphite, sizing material for textile products and paper, and the suspending agent for herbicide and pesticide, graphite deflocculant, deflocculant for textile and so on.
Specifications:
1,Kappa refined carrageenan
1) Appearance:snowy white powder;
2) Viscosity of a 1.5% solution at 75ºC(mPa.s):20~200
3)particle size:120~200mesh;
4)ash(%):25maximum;
5) moisture(%):13 maximum;
6) heavy metal(count by pb,ppm):10maximum;
7) arsenic content(ppm):2maximum;
8) gel strength of 1.5% solution add 0.2% KCL (g/cm2):1100minimum;
9) transparency(T%):80 minimum;
10) total baceria (cfu/g):5000 maximum;
11) yeast & mould(cfu/g):100 maximum;
12) E-Coli(10g):negative;
13) salmonella:negative;
14) PH value:7~9;
15) package: packed by complex paper bag; net weight per bag, 25kgs/
2.kappa semi-refined carrageenan
1) apperance:tiny yellow powder;
2) particle size:120~200mesh;
3) viscosity(cps): 20~350;
4) ash(%): 20 maximum;
5) moisture(%):10 maximum;
6) heavy metal(count by pb,ppm): 10 maximum;
7) arsenic content(ppm):2 maximum;
8) gelstrength of 1.5% solution add 0.2% KCL(g/cm2):500 minimum;
9) total bacteria(cfu/g):5000 maximum;
10) yeast & mould(cfu/g):100 maximum;
11) E-Coli(10g):negative;
12)salmonella:negative;
13) PH value:7~9;
14) package: packed by complex paper bag; net weight per bag 25kgs.
3,iota semi-refined carrageenan
1) appearance: tan to yellowish, coarse to fine powder which is practically odourless;
2) viscosity of a 1.5% solution at 75ºC: not less than 20 mPa.s and not more than 350 mPa.s;
3)CaC12 Gel strength of a 1.5% solution add 0.2% CaC12:absent;
4)sulphate:not less than 15% and not more than 40% on the anhydrous basis(as SO4);
5) loss on drying:not more than 12%(105ºC,4 hours);
6) ash:not more than 25% determined on the anhydrous basis at 700ºC;
7) acid-insoluble ash: not more than 1% on the anhydrous basis;
8) PH value:7~11;
9)arsenic: not more than 2 ppm;
10) heavy metal(as Pb): not more than 10 ppm;
11) total plate count: not more than 5000 colonies per gram;
12) yeast and moulds:not more than 300 colonies per gram;
13) E.Coli:negative in 10 grams;
14) salmonella: negative in 10 grams;
15) particle size:120 mesh and 200 mesh.
