Diosgenin in 18 samples belonging to 3 species of Costus L. was determined by colorimetric and GC analyses. The results indicated that the content of diosgenin in Costus lacerus rhizome is the highest (0.530%) and the...Diosgenin in 18 samples belonging to 3 species of Costus L. was determined by colorimetric and GC analyses. The results indicated that the content of diosgenin in Costus lacerus rhizome is the highest (0.530%) and the content in C. speciosus C. lacerus . It also showed that C. tonkinensis contains no diosgenin. The samples from different parts, ploid races, locations, collection periods and storage conditions contain various amounts of diosgenin.展开更多
Six Chemical Constituents were isolated from the underground parts of Globba racemosa Smith (Zingiberaceas)and identitied as friedelin(1),cycloeucalenol(2) 3-hydroxy-stigmast -5-7-one(3), stigmast-5-en-7-one (5) and s...Six Chemical Constituents were isolated from the underground parts of Globba racemosa Smith (Zingiberaceas)and identitied as friedelin(1),cycloeucalenol(2) 3-hydroxy-stigmast -5-7-one(3), stigmast-5-en-7-one (5) and sitosterol(6) based on spectral data. 1-5 wereisolated form the Plants of Zingiberaceae family for the first time and triterpenoids were found in Zingiberaceae for the first time too.展开更多
Aim To differentiate the genuine cassia bark from its substitutes and adulterants. Methods Six components, phenylpropyl acetate, cinnamyl acetate, cinnamaldehyde, cinnamyl alcohol, coumarin, and cinnamic acid were use...Aim To differentiate the genuine cassia bark from its substitutes and adulterants. Methods Six components, phenylpropyl acetate, cinnamyl acetate, cinnamaldehyde, cinnamyl alcohol, coumarin, and cinnamic acid were used as characteristic markers, and an optimized TLC method was developed. Results The TLC profile of cassia bark is similar to its closely related variety Cinnamomum cassia Presl var. macrophyllum Chu but significantly different from other six Cinnamomum species. High content of phenylpropyl acet...展开更多
文摘Diosgenin in 18 samples belonging to 3 species of Costus L. was determined by colorimetric and GC analyses. The results indicated that the content of diosgenin in Costus lacerus rhizome is the highest (0.530%) and the content in C. speciosus C. lacerus . It also showed that C. tonkinensis contains no diosgenin. The samples from different parts, ploid races, locations, collection periods and storage conditions contain various amounts of diosgenin.
文摘Six Chemical Constituents were isolated from the underground parts of Globba racemosa Smith (Zingiberaceas)and identitied as friedelin(1),cycloeucalenol(2) 3-hydroxy-stigmast -5-7-one(3), stigmast-5-en-7-one (5) and sitosterol(6) based on spectral data. 1-5 wereisolated form the Plants of Zingiberaceae family for the first time and triterpenoids were found in Zingiberaceae for the first time too.
文摘Aim To differentiate the genuine cassia bark from its substitutes and adulterants. Methods Six components, phenylpropyl acetate, cinnamyl acetate, cinnamaldehyde, cinnamyl alcohol, coumarin, and cinnamic acid were used as characteristic markers, and an optimized TLC method was developed. Results The TLC profile of cassia bark is similar to its closely related variety Cinnamomum cassia Presl var. macrophyllum Chu but significantly different from other six Cinnamomum species. High content of phenylpropyl acet...