期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 18, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/ijms18030512
关键词
Phoenix dactylifera; electrospray ionization; mass spectrometry; p-coumaroylshikimic acids; caffeoylshikimic acids; Density Fonctional Theory (DFT)
资金
- European Project Proficiency (FP7-REGPOT-2009-1) [245751]
- Deanship of Scientific Research, Qassim University, Kingdom of Saudi Arabia [2062]
Phoenix dacylifera is an ancient palm species rich in (poly) phenols. These phenolic compounds were tentatively identified by using liquid chromatography coupled with ion spray mass spectrometry in tandem mode (LC/MS/MS) with negative ion detection. Negative identification of the compounds was based on their retention times and mass spectra in full scan mode (MS), and in different MS/MS modes. For the first time, complete hypothesis, and routs for both p-coumaroylshikimic acids (CoSA) and caffeoylshikimic acids (CSA) were suggested and confirmed by Density Fonctional Theory (DFT) study. Notably, of the 53 compounds characterized, 19 hydroxycinnamates derivatives were tentativelycharacterized in male flowers of date palm and 15 of them were recorded for the first time. In addition, five organic acids, six B-type proanthocyanidins, two anthocyanidin and 21 flavonoid derivatives have been tentatively characterized. Identification of B-type proanthocyanidins were based on the diagnostic ions resulting from heterocyclic ring fission (HRF) and retro-Diels-Alder (RDA) reaction of flavan-3-ol provided information on the hydroxylation pattern and the type of inter-flavan bond proanthocyanidins. The sequence of proanthocyanidins was detected through ions extracted from quinone methide (QM) cleavage of the inter-flavan bond.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据