LC–MS/MS comparison of the 4 plant extracts imply thatL extract was the richest, which was apparent through its superior biological activity. LC–MS/MS analysis of the total alcoholic extract (Alc) of the leaves ofL. was performed using MS-techniques at different voltages; equal to 35 and...
Through LC-MS comparative studies on the plant extracts and their malonate-free extracts, 20 flavonoid glycoside malonates were detected in the flower extract. Eight were identified as genistin 6''-O-malonate (39), formononetin 7-O-β-d-glucoside 6''-O-malonate (40), biochanin A 7-O-...
combination with machine learning to be successfully used for routine plant species identification task, given sufficient dataset. Unknown samples can be both in the forms of dry powder and alcohol-water extract or, likely, any form that retained relatively complete set of characteristic chemical ...
2.Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100193,China) [Abstract] To develop a LC-MS/MS method for the determination of protocatechuic acid,protocatechuic aldehyde,salvianolic acid A,salvianolic acid B,cryptotanshinone and tans...
persicum plant extract, indicating the plant’s potential to enhance antimicrobial properties through various applications. The previous study reported chemical composition of essential oils from different Bunium species, reinforcing the importance of phytochemical constituents in the antimicrobial efficacy of ...
Ephedra altissima is widely used in both traditional folk medicine to treat several disorders and for the preparation of health teas [15]. Pseudoephedrine and ephedrine were the two active principles of the plant and were the origin of several plant-derived drugs that exhibit a pharmacological effec...
[质量] 结合两种LC/MS方法用于复方丹参滴丸中多成分的鉴定 章弘扬 , 胡坪 , 梁琼麟, 罗国安' , 王义明 (1.华东理工大学化学与分子工程学院,上海200237;2.清华大学化学系,北京100084) 关键词:复方丹参滴丸;飞行时间质谱;离子阱多级质谱;多成分鉴定 摘要:目的:建立一种结合两种LC/MS的方法,对复方丹参滴丸(丹参,...
LC MS方法鉴定黄酮类化合物 黄酮类化合物的质谱MS鉴定 黄酮类化合物flavonoids 一概述 广泛分布于植物中的天然有氧杂环化合物;主要游离态和与糖结合成苷的形式存在藻类细菌等微生物中没有发现黄酮类化合物的存在 以前;黄酮类化合物主要是指基本母核2苯基色原酮类化合物;现在则是泛指两个苯环A与B环通过中央三碳链...
of usaramine or 18 一 hydroxyi nterrimine. ( HPA s )are detected from the methanol extract of G 关键词:白背三七 ; 吡咯里西啶生物碱 ; 全缘千里光碱; 液相色谱与多级质谱联用法(Lc —Ms“ ) K ey words :Gynura divaricata ( L . ) DC .;pyrrolizidine a l kaloids ;integerrimine;LC— ...
This study was conducted to investigate the phytochemical compounds of Aloe vera leaves by using LC-MS and evaluate their antifungal and allelopathic activities in vitro. The ethanol extract of Aloe vera leaves was subjected to evaluate their antifungal activity against three plants pathogenic fungi, ...