Product introduction

Biochemical studies. It has the characteristics of forming hydrophilic colloids, gels, thickening, emulsification, film formation, and stable dispersions. In particular, protein reactivity is the biggest feature of carrageens. Among natural polymers and synthetic polymer viscous substances, only carrageens have this property.

Carrageenan (C8830), also known as carrageenan, carrageenan, carrageenan, etc., is a general term for a polysaccharide extracted from Marine red algae, which is a mixture of a variety of substances. It is chemically composed of sulfatated or nonsulfatated galactose and 3,6 anhydrogalactose linked by alternating A-1, 3 and B-1, 4 glycosidic bonds. It is a polymer with a molecular weight of more than 200,000.

Carrageenan is commonly used as a gel, emulsifier, or stabilizer in biochemical research, and as a food additive. Carrageenan is also divided into different types. Let's take a look at some commonly used carrageenan.

1, type i: is a soft colloid solid. A thermally reversible gel. The degree of sulfation was 28 ~ 35%. It is hygroscopic. It was most stable at Ph 9. Its gelation depends on the temperature, the concentration of counterions and other polysaccharides. "Soluble in polar solvents, hot emulsions, hot and concentrated salt solutions, water above 60 ℃, slightly soluble in cold water, potassium salts and calcium salts are insoluble in cold water." The median lethal dose was more than 5000mg/kg.

2, k type: is a hard colloid solid. A thermoreversible gel. The degree of sulfation was 25 ~ 30%. It is hygroscopic. It was most stable at Ph 9. Its gelation depends on the temperature, the concentration of counterions and other polysaccharides. Soluble in polar solvents, hot milk, hot and concentrated sugar solution, water above 60℃, insoluble in concentrated salt solution, 35% ethanol, insoluble in cold milk and swelling. Its sodium salt is soluble in cold water, and its potassium and calcium salts are insoluble in cold water.

3, L-type: solid, its highest degree of sulfate is 32 ~ 39%. It was most stable at Ph 9. Soluble in water, milk, hot and concentrated sugar solution, concentrated salt solution. Its sodium salt was dissolved in 35% ethanol solution.

Other products with similar functions as carrageenan include xanthan gum (G8800) and locked-bean gum (L8290).

Physical properties

Solubility: 10 mg/mL in water

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