English name: Amylopectin from maize
Other names: gum starch; starch extract
CAS number: 9037-22-3
Level: BR
Impurity: ≤0.1%
Properties: white or almost white powder. Corn extract is odorless and tasteless. Hygroscopic. Insoluble in cold water, ethanol and ether. It is composed of branched-chain glucose units connected by α (1 → 4) and about 4% of α (1 → 6) glycosidic bonds. The effect of iodine is purple red (maximum absorption wavelength 540nm). As a glucose polymer, in addition to α-1,4 glycosidic linkage to glucose to form a straight chain, there are many branched branches formed by α-1,6 glycosidic linkage to glucose. The degree of polymerization, that is, the number of glucose units, is about 1000-3000 000, forming molecules of different sizes, and its molecular weight is the product of the degree of polymerization and the molecular weight of glucose 162. Amylopectin constitutes the white granules of natural starch, and its properties different from amylose affect the properties of natural starch and related applications. If amylopectin has high viscosity, the tendency of "retrogradation" is weak and stable, and it is not easy to "age" and "regenerate". Beta-amylase can only digest about 50% of it. The reaction between starch and iodine is red. It exists in almost all natural starch derived from grains, potatoes and other crops, about 75% to 80% of starch. Some sticky glutinous rice and sticky corn are almost all used for amylopectin: biochemical research. Branched chain enzyme assay storage: RT
γ-Aminobutyric Acid
The product can be used in biochemical research, medicine for the treatment of hepatic coma and cerebrovascular disorders caused by a variety of diseases. Used in pharmaceutical intermediates.4-Aminobutyric acid has the effect of lowering blood lipids and is suitable for the treatment and prevention of various types of hepatic coma. It can be used in the treatment of poliomyelitis, cerebral haemorrhage, and as an antidote for gas poisoning Chemicalbook. Also used in biochemical research and organic synthesis. UsesCan reduce blood ammonia and promote brain metabolism. Used in the treatment of various types of hepatic coma, also used in post-stroke sequelae, cerebral arteriosclerosis, head trauma sequelae and uremia, gas poisoning and other coma caused by.
γ-aminobutyric acid,GABA,56-12-2,C4H9NO2,4-Aminobutyric acid
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