Publications by authors named "Mi-Mi Yu"

3 Publications

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[Analysis on chemical compositions of Artemisia Argyi from Qichun of different years and moxa wool refined in different proportions].

Zhongguo Zhen Jiu 2010 May;30(5):389-92

Acupuncture School of Beijing University of CM, Beijing 100029, China.

The article aims at providing theoretical foundation for security of moxibustion through analyzing chemical compositions of Artemisia Argyi of different years from Qichun County, Hubei Province, and moxa wool refined in different proportions. Artemisia Argyi from Qichun on 2007, 2008 and 2009 were taken as raw materials, and processed into moxa wool with the proportions of raw material and product as 3 : 1, 5 : 1, 8 : 1 and 15 : 1, respectively. Essential oils of Artemisia Argyi and the refined moxa wool were extracted by steam distillation. Their chemical compositions were identified by gas chromatography-mass spectrometry (GC-MS) and calculated with semiquantitative method. The result showed that chemical compositions of Artemisia Argyi of different years and moxa wool refined in different proportions were almost the same, but their contents were with obvious difference. The relative content of volatile substances decreased with the age prolonged and a rise in the proportion of the refined moxa wool, while the involatile material increased. Therefore it can be concluded that the essential oil of Artemisia Argyi from Qichun and the refined moxa wool is basically safe. Involatile substances such as Juniper camphor, Caryophyllene oxide and Caryophyllene etc. are the main contents of high proportional moxa wool of old year. And these substances may be the effective components in moxibustion treatment.
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May 2010

[GC-MS analysis of the fatty components of pollen Typhae before and after being carbonized].

Zhongguo Zhong Yao Za Zhi 2006 Feb;31(3):200-2

Beijing University of Chinese Medicine, Beijing 100102, China.

Objective: To study the changes of the fatty components of Pollen Typhae before and after being carbonized.

Method: Pollen Typhae and Pollen Typhae carbonisatus were extracted with petroleum ether (60-90 degrees C) respectively. The two kinds of extracts were analyzed by GC-MS after saponificated and methanolized, and their constituents were searched through NIST. The contents of the constituents were determined by method of normalization.

Result: Either in Pollen Typhae or in Pollen Typhae carbonisatus, 32 components were identified, among which 20 components were the same and 6 were different respectively. Among the same components, the relative contents of 3-methyl-2-butenoic acid-2-phenylethyl ester, hexanedioic acid-dimethyl ester, dimethyl phthalate, diethyl phthalate, diphenylamine, sebacic acid dimethyl ester, 1,2-benzenedicarboxylic acid, ethyl methyl ester, methyl-2-ethylhexyl phthalate and diisooctyl phthalate etc. increased obviously, and the relative contents of nonanedioic acid-dimethyl ester, diisobutyl phthalate and stigmastan-3,5-dien etc. decreased greatly. Among the different components, 8-hydroxy-octanoic acid-methyl ester, 9-hydroxy-nonanoic acid-methyl ester, 10-octadecenoic acid-methyl ester, m-hydroxycinnamic acid-methyl ester,3-[4-( acetyloxy)-3-methoxyphenyl]2-propenoic acid-methyl ester and 11-octadecenoic acid-methyl ester were detected in Pollen Typhae, 3-hydroxyspirost-8-en-11-one, benzenepropanoic acid-methyl ester, 2,4-dimethylhexanedioic acid; 2,4-bis (1,1-dimethylethyl)-phenol, undecanedioic acid-dimethyl ester and 9,10-dihydroxy-octadecanoic acid-methyl ester were detected in Pollen Typhae carbonistatus.

Conclusion: The species and contents of the fatty components in Pollen Typhae changed before and after being carbonized, but their chemical types didn't change too much.
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February 2006

[Analysis of volatile constituents from Anemarrhena asphodeloides by GC-MS].

Zhongguo Zhong Yao Za Zhi 2005 Nov;30(21):1657-9

School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.

Objective: To study the chemical constituents of the volatile oil from the rhizome of Anemarrhena asphodeloides.

Method: The volatile oil was steam distillation. Chemical constituents were separated and analyzed by GC-MS. The relative content of each component was determined by area nomalization.

Result: 24 volatile compounds were isolated and identified for the first time, representing 70.83% of the total oil.

Conclusion: The main constituents of this oil were aldehydes (31.15%), terpene and their oxide (20.66%), alkyls (8.35%), Furan heterocyclic compounds (6.41%), non terpene alcohol (4.26%). There are 12 compounds with contents over 3%. Among them, borneol has the highest content (9.35%).
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November 2005