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Supply Food and Industrial Grade Carrageenan Powde Free SamplesChat Now
Carrageenan, also known as eucalyptus gum, stone cauliflower gum, carrageenan, carrageenan, because carrageenan is a hydrophilicity extracted from red algae seaweed such as Eucheuma, Acacia, and Carrageen A colloid whose chemical structure is a calcium, potassium, sodium or ammonium salt of a polysaccharide sulfate composed of galactose and dehydrated galactose. Carrageenan can be divided into κ-carrageenan, ι-carrageenan, λ--carrageenan, γ-carrageenan, ν-carrageenan, ξ-carrageenan, and μ-carrageenan due to the different forms of sulfate ester binding. Carrageenan is widely used in the manufacture of jelly, ice cream, pastries, soft candy, canned food, meat products, eight-treasure porridge, white fungus bird's nest, oyster food, cold food and so on.
Chinese name carrageenan molecular weight no fixed relative molecular chemical formula no fixed structure application gelling agent English name Gelatin raw material cooked animal bone appearance white or light yellow, translucent boiling point no
According to the number of 3,6-dehydrated D-galactose (3,6-AG) in the carrageenan molecule and the number and position of sulfate groups, it can be divided into kappa, iota, and lambda. There are 7 types of carrageenan, including app(Kappa), Ι(Iota) and λ(Lambda). There are 7 types of carrageenan, such as app(Kappa), Ι(Iota) and λ(Lambda). mixture.
The structural features of all carrageenan are β-D-galactopyranoside residues (hereinafter referred to as 1,3-G) bonded by 1,3 - glycosidic bonds and α-D bonded by 1,4 - glycosidic bonds. A linear polysaccharide in which galactopyranoside residues (hereinafter abbreviated as 1,4-G) are alternately linked.
Carrageenan physical properties
Sensory characteristics: Carrageenan is an odorless, flawless, color-to-yellow-brown powder. Some products have a seaweed flavor. Under low-power microscope, each particle looks like a short fiber segment (ethanol precipitated product). Or small flakes (drum drying products).
Test method: Take an appropriate amount of sample in a clean, dry white porcelain dish and observe its color and state under natural light, showing white or light yellow to brownish yellow powder or granules.
Particle size: Carrageenan is often crushed to 99.5% through a 40 mesh U.S. standard sieve. For some special applications, there are fine particle products that pass through a 270 mesh U.S. standard sieve.
Density: The average density of the particles is about 1.7 g/cm3. The nominal (fixed) density, the drum-dried flake powder is 0.6 g/cm3, and the ethanol-precipitated powder is lg/cm3.
Molecular mass: Carrageenan is a natural polymer compound with no molecular weight. The average molecular mass of food grade carrageenan is about 200,000 u. Its relative molecular mass is generally between 1×105 and 5×105.
(1) Solubility in hot water Carrageenan can be dissolved in hot water or hot milk. Carrageenan is dissolved in hot water (>75 ° C), and the solubility is only affected by the solution. Solutions with a concentration of 10% can be processed by conventional mixing equipment.
(2) In cold water, the solubility is in cold water, the carrageenan is dissolved, and the uranium salt of carrageenan can also be dissolved, but the salt or calcium salt of carrageenan can only swell and not dissolve.
According to the use, carrageenan can be divided into edible carrageenan, medicinal carrageenan, industrial carrageenan and the like.
Carrageenan: In the food field, carrageenan can be used as thickener, coagulant, suspending agent and emulsifier due to its viscous, coagulable, negatively charged and physicochemical properties such as complexes with some substances. And stabilizers.
Medicinal gelatin: Carrageenan can be used in the pharmaceutical industry as a microbial culture medium, sustained release capsules/tablets, ointment bases, and cod liver oil emulsifiers. In recent years, it has been found that carrageenan itself has a special medical effect. It has broad-spectrum inhibitory activity against many important viral pathogens (such as herpes virus, HIV, mucus virus, baculovirus, etc.). Carrageenan also has a sustained effect on the immune system. It is an effective anti-pepsin, anti-cure, anti-coagulant, anti-thrombotic substance. (The above content comes from Huang Laifa 89)
Industrial gelatin: Carrageenan is used in the industry as a thickener, suspending agent and gelling agent for the processing of watercolor pigments, ceramics and the like. Carrageenan can also be used in daily necessities such as toothpaste, moisturizers, shampoos, detergents, air fresheners, and the like.