1.Application of random amplified polymorphism DNA technique in systematic classification of origin fungi of Chinese traditional medicine Red Kojic
Heming MI ; Wangxing XING ; Rongzhen CHENG ; Xiang HE ; Yutian WU ;
Academic Journal of Second Military Medical University 2000;0(10):-
Objective:To establish a random amplified polymorphism DNA(RAPD) method for classification of origin fungi of the Chinese traditional medicine Red Kojic. Methods:The genome DNA of 7 ordinary species Monascus including M. purpureus and a strain of Aspergillus terreus were extracted by CTAB. The content of DNA was assayed doubly by fluorescence intensity of ethidium bromide (EB) and spectrometer. Amplification products were detected by agarose gel electrophoresis and clustering analysis by PHYLIP 3.5c. Results:A characteristic pattern was produced depend on one of the 10 primers screened from 60 random primers, and the genome was amplified. The diversities of the fingerprint patterns of Monascus was obvious, by which Monascus can be distinguished easily. The results were consistent with that of morphologic study. Conclusion:RAPD is a new assay technique. It can be used to classify and identify of Monascus fungi. [
2.A new iridoid derivative from the roots of Scrophularia buergeriana.
Ximin WU ; Liuqiang ZHANG ; Xiaochong CHEN ; Li FENG ; Wangxing XING ; Yiming LI
Acta Pharmaceutica Sinica 2014;49(7):1019-21
Phytochemical investigation of the roots of Scrophularia buergeriana Miq. (Scrophulariaceae), resulted in the isolation of a new iridoid derivative named as buergerinin (1). Its structure was elucidated as rel-(1R, 5R, 6R)-(2-oxa-bicyclo[3.3.0]oct-7-en-6, 7-diyl)dimethoxypropane based mainly on MS and 1D and 2D NMR spectroscopic analyses.
3.Identifying the origin fungi of the traditional Chinese medicine Hongqu with capillary gas chromatography method
Wangxing XING ; Heming MI ; Bin CHEN ; Shijing CHEN ; Xiang HE ; Yutian WU
Academic Journal of Second Military Medical University 2001;22(5):429-431
Objective:To establish a capillary gas chromatography(CGC) method for identifying the origin fungi of traditional Chinese medicine Hongqu. Methods:The volatile components of 7 species of Monascus including M. purpureus Went, M.aurantiacus Lee, M. serorubesceus Sato, M. albidus Sato, M. barkeri Dangerd, M. ruber van Tieghem, and M.fuliginosus Sato were analyzed by capillary gas chromatography method. Inlet temperature and detector temperature were 280℃,temperature program were 130℃,5 min→10℃/min→200℃, 10 min FID was used for detection. Results:The variety and contents of the volatility components in Monascus had obvious differences which can be distinguished easily by the main fingerprint peaks within 20 min. Conclusion:This method is useful to identify of Monascus fungi.