6Kikuchi M, Suzuki N. Studies on the constituents of Tussilago farfara L. Ⅱ. Structures of new sesquiterpenoids isolated from the tlower buds [J]. Chem Pharm Bull, 1992, 40 (10) :2753.
7Gao H, ttuang Y N, C, ao B, et al. α-Glueosidase inhibitop/ effect by the flower buds of Tussilago farfara L. [J]. Food Chem, 2008, 106:1195.
8Ma C F, Wang H H, Lu X, et al. Melabolie fingerprinting investigation of Artemisia annua L. in different stages of development by gas chromatography and gas ehromatography-mass speetrometry [J]. J Chromatogr A, 2008, 1186:412.
9Chang W T, Thissen U, Ehlert K A. Effects nf growth conditions and processing on Rehmannia glutinosa using fingerprint strategy [J]. Planta Med, 2006, 72:458.
10Tiannian S, Tarachiwin L, Bamba T, et al. Metabolle profiling of Angelica acutilobu roots utilizing gas chromatography time-of-flight mass spectrometry for quality assessment based on cultivation area and euhivar via muhivariate pattern reeognition [J]. J Biosei Bioeng, 2008, 105:655.
