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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
Received: 12 December 2009; in revised form: 12 January 2010 / Accepted: 17 January 2010 / Published: 20 January 2010
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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.

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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.

AMA 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(1):420-431.

Chicago/Turabian Style

Zhang, Liang-Liang; Lin, Yi-Ming; Zhou, Hai-Chao; Wei, Shu-Dong; Chen, Jia-Hong. 2010. "Condensed Tannins from Mangrove Species Kandelia candel and Rhizophora mangle and Their Antioxidant Activity." Molecules 15, no. 1: 420-431.


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