2012年2月15日星期三

extracted from crustaceans


Chitin. Chitin is in 1811 by the French scholar Braque Horno ( Braconno ) found in 1823, by the European Gil ( ) ( Dier ) extracted from crustaceans, named CHITIN, the chitin. Appearance and properties : light yellow to white, soluble in concentrated hydrochloric acid phosphoric acid / sulfuric acid / acetic acid, insoluble in alkaline and other organic solvents,mother's day also do not dissolve in water.
Chitosan derivatives ( Chitosan derivatives ) is soluble in water. Chitin has inhibit cancer, tumor cell metastasis, enhance human immunity and protecting the liver detoxification. Especially for diabetes, hypertension, obesity, liver and kidney disease, is conducive to the prevention of cancer lesions and adjuvant chemoradiotherapy in the treatment of neoplastic diseases.
Chitin ( Chitin ) concept
Chitin exists in the nature of the lower plant fungi, algae cell, crustacean shrimp, crab shell, insects, plant cell wall, is from the crab, shrimp shell in the application of genetic engineering to extract animal polymeric cellulose, by the scientific community for the reputation of the" sixth elements of life"! It was in Europe and the United States government identified as functional immune substances. The fungus, Cordyceps plants also contain traces of" chitosan" content, but only in 2%-7%.
Chitin
Chitin is the only positively charged positive food fiber, the earth 's natural organic compounds, the amount is the largest is cellulose, followed by chitin, estimate the nature the biosynthesis of chitin nearly 100 tons per year. Chitin is the largest number of organic compounds containing nitrogen, followed by the protein only this at 2 o'clock,Jia Ke su it illustrates the importance of chitin. Shells contain 40% protein, 30% calcium, 30% chitin.
Extraction of chitin ( chitin ) process is: first with dilute sodium hydroxide solution to remove protein, and then, using hydrochloric acid to remove calcium salt, the rest is chitin. In order to remove acetyl chitin from these, with long time high temperature, so that the concentration of sodium hydroxide reaction, can be made of chitin containing amino groups.
Because chitin is not soluble in acid, is insoluble in water, it is difficult to be used by the body. By deacetylation of chitosan after it into soluble in dilute acids and fluids, can be utilized by the body.
Chitin of generalization
Commonly known as: chitin, chitin, ( later known as the acetylated chitosan ). English Name: Chitin. Chinese Name:varicose veins tips chitin, chitin chemical name: beta - ( 1 - > 4 ) - 2 - acetyl amino - 2 - DNA - D - glucose name of commodity: Babaiyi electric powder

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