Preliminary studies on physicochemical properties of Angelica sinensis polysaccharide-iron complex.
- Author:
Kai-ping WANG
1
;
Yu ZHANG
;
Li-quan DAI
Author Information
- Publication Type:Journal Article
- MeSH: Angelica sinensis; chemistry; Chemical Phenomena; Chemistry, Physical; Drug Stability; Ferric Compounds; administration & dosage; chemical synthesis; chemistry; Hydrogen-Ion Concentration; Iron; analysis; Plants, Medicinal; chemistry; Polysaccharides; administration & dosage; isolation & purification; Solubility
- From: China Journal of Chinese Materia Medica 2006;31(9):747-750
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study some physicochemical properties of Angelica sinensis polysaccharide-iron complex (APC).
METHODBased on the qualitatively identified reactions of iron (III), the qualitatively identified reactions of APC were found out by comparing hydroxide. The content of iron (III) in APC was determined with iodometry. The stability of APC under physiological pH conditions was judged by titrating APC with sodium hydroxide. The deoxidization of APC was tested with colorimetric analysis.
RESULTAPC showed the qualitatively identified reactions of iron (III). The content of iron (III) in APC ranged from 10% to 40%, and the water-solubility of APC was related to the content of iron (III). The complex was stable at physiological pH from 3 to 12, without precipitation and dissociation. At 37 degrees C, Fe (III) in the complex was completely reduced to Fe (III) by ascorbic acid in about 6 hours.
CONCLUSIONAPC can be qualitatively identified by using the qualitatively identified reactions of iron (III). When its iron (III) content is within 20%-25%, APC has a better ability to dissolve in water. And the complex is stable under physiological pH conditions.
