期刊
MOLECULES
卷 15, 期 1, 页码 420-431出版社
MDPI
DOI: 10.3390/molecules15010420
关键词
mangrove; condensed tannins; free radical scavenging activity; reducing power
资金
- Program for New Century Excellent Talents in University [NCET-07-0725]
- Program for Innovative Research Team in Science and Technology in Fujian Province University
The structures of condensed tannins isolated from two mangrove species, Kandelia candel and Rhizophora mangle, were characterized by C-13 nuclear magnetic resonance (NMR) spectroscopy and matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analyses. Results demonstrate that large heterogeneity occurs in degree of polymerization, pattern of hydroxylation, and substitution with monosaccharides in the structures of the condensed tannins. Condensed tannin oligomers from K. candel and R. mangle were shown to be heterogeneous mixtures consisting of procyanidin and prodelphinidin structural units with the former dominating. The MALDI-TOF mass spectra contained masses corresponding to a distinct oligomeric series of glycosylated heteropolyflavan units. In addition, condensed tannins from two mangrove plants were screened for their potential antioxidant activities using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) model systems.
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