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Antioxidant Tannins from Stem Bark and Fine Root of Casuarina equisetifolia

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Antioxidant Tannins from Stem Bark and Fine Root of Casuarina equisetifolia.pdf (360.3Kb)
Date
2010-08-16
Author
Zhang, Shang-Ju
Lin, Yi-Ming
林益明
Zhou, Hai-Chao
周海超
Wei, Shu-Dong
Lin, Guang-Hui
林光辉
Ye, Gong-Fu(Fujian Acad Forestry)
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  • 生命科学-已发表论文 [5901]
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Abstract
Structures of condensed tannins from the stem bark and fine root of Casuarina equisetifolia were identified using MALDI-TOF MS and HPLC analyses. The condensed tannins from stem bark and fine root consist predominantly of procyanidin combined with prodelphinidin and propelargonidin, and epicatechin is the main extension unit. The condensed tannins had different polymer chain lengths, varying from trimers to tridecamer for stem bark and to pentadecamer for fine root. The antioxidant activities were measured by two models: 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and ferric reducing/antioxidant power (FRAP). The condensed tannins extracted from C. equisetifolia showed very good DPPH radical scavenging activity and ferric reducing/ antioxidant power, suggesting that these extracts may be considered as new sources of natural antioxidants for food and nutraceutical products.
Citation
Molecules 2010, 15(8), 5658-5670
URI
http://dx.doi.org/doi:10.3390/molecules15085658
https://dspace.xmu.edu.cn/handle/2288/10081

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