Next Article in Journal
In Vitro and in Vivo Effects of Three Different Mitragyna speciosa Korth Leaf Extracts on Phase II Drug Metabolizing Enzymes—Glutathione Transferases (GSTs)
Previous Article in Journal
Gas-Phase Pyrolytic Reaction of 4-Aryl-3-buten-2-ols and Allyl Benzyl Ethers: Kinetic and Mechanistic Study
Molecules 2010, 15(1), 420-431; doi:10.3390/molecules15010420
Article

Condensed Tannins from Mangrove Species Kandelia candel and Rhizophora mangle and Their Antioxidant Activity

1,2, 1,* , 1, 1 and 2
1 Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China 2 Key and Open Lab. on Forest Chemical Engineering SFA, Institute of Chemical Industry of Forest Products, CAF; Nanjing 210042, China
* Author to whom correspondence should be addressed.
Received: 12 December 2009 / Revised: 12 January 2010 / Accepted: 17 January 2010 / Published: 20 January 2010
Download PDF [305 KB, uploaded 18 June 2014]

Abstract

The structures of condensed tannins isolated from two mangrove species, Kandelia candel and Rhizophora mangle, were characterized by 13C 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.
Keywords: mangrove; condensed tannins; free radical scavenging activity; reducing power mangrove; condensed tannins; free radical scavenging activity; reducing power
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote
MDPI and ACS Style

Zhang, L.-L.; Lin, Y.-M.; Zhou, H.-C.; Wei, S.-D.; Chen, J.-H. Condensed Tannins from Mangrove Species Kandelia candel and Rhizophora mangle and Their Antioxidant Activity. Molecules 2010, 15, 420-431.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

Cited By

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert