ABSTRACT
AIM: To analyze tanshinone IIA in Salvia miltiorrhiza Bunge by supercritical fluid extraction (SFE) coupled with capillary gas chromatography (CGC). METHODS: The solution pressure was predicted by solubility parameter theory, the extraction conditions were confirmed by orthogonal design in which temperature, volume of modifier and dynamic extracting volume had been studied in three levels. RESULTS: This method is quick, convenient, precise and accurate, added sample recovery is 95.3%, RSD = 4.27%. CONCLUSION: Compared with the method of ultrasonic extraction, significantly better qualitative and quantitative result could be obtained by SFE-CGC and expend less organic solvent then make less pollution.
Subject(s)
Phenanthrenes/analysis , Plants, Medicinal/chemistry , Salvia miltiorrhiza/chemistry , Abietanes , Chromatography, Gas/methods , Chromatography, Supercritical Fluid/methodsABSTRACT
OBJECTIVE: To establish a gas chromatography fuzzy clustering analytical method for classifying of origin fungi of the Chinese traditional medicine, Hongqu. METHODS: The volatile and nonvolatile components of 7 ordinary species of Monascus including M. aurantiacus Lee, etc. were analyzed by capillary gas chromatog raphy using FID: Inlet temperature 280 degrees C, detector temperature 280 degrees C, temperature program 130 degrees C, 5 min-->10 degrees C.min-1-->200 degrees C, 10 min. RESULTS: In the peak number and contents of volatile and nonvolatile components of Monascus exist obviously differences through which Monascus can be distinguished easily by the main fingerprint peaks within 20 minutes. CONCLUSION: The capillary gas chromatography fuzzy clustering analytical method is useful to the identification of Monascus fungi.