title: [An in vitro analytical method based on bio-thermal activity for the determination of dissolution rate of Chinese medicine solid preparation].
abstract: To explore the new pattern of Chinese medicine solid preparations (CMSP) in vitro dissolution, a method testing the bio-thermal activity in combination with UPLC was used. Microcalorimetry was used to obtain the characteristic metabolic growth power-time curves and a series of biothermodynamic parameters of the inhibition of Staphylococcus aureus by Yinhuang tablet dissolving solutions at the pH 6.8 (phosphate buffer) dissolution medium at different times. From these results, the cumulative dissolution of Yinhuang tablet based on bio-thermal activity was obtained. The dissolution rates of two components of chlorogenic acid and baicalin were determined by UPLC method. Then f2 similar factor method was used to evaluate the relevance of these two methods. The result showed that f2 values all were more than 50, indicating that there is a good correlation between the two methods of measuring the dissolution rate. It is feasible to determine CMSP in vitro dissolution by using bio-thermal activity, and to provide new evaluation methods for controlling the quality of CMSP.
authors.affiliation: China Military Institute of Chinese Materia Medica, 302 Military Hospital of China, Beijing 100039, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Huang
authors.forename: Hai-long
authors.initials: HL
authors.lastname: Yuan
authors.forename: Xiao-he
authors.initials: XH
authors.lastname: Xiao
authors.forename: Tian-tian
authors.initials: TT
authors.lastname: Zhang
mesh_terms: D002151:Calorimetry / Q000379:methods; D002726:Chlorogenic Acid / Q000737:chemistry* / Q000494:pharmacology; D002853:Chromatography, Liquid / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry* / Q000494:pharmacology; D011786:Quality Control; D012995:Solubility; D013211:Staphylococcus aureus / Q000187:drug effects / Q000502:physiology; D013607:Tablets; D013816:Thermodynamics
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D013607:Tablets; D002726:Chlorogenic Acid; C038044:baicalin