Antioxidant Activities and Phytochemical Study of Leaf Extracts from 18 Indigenous Tree Species in Taiwan
Joint Authors
Ho, Shang-Tse
Chen, Yong-Long
Zhao, Ying-Ying
Chung, Min-Jay
Tung, Yu-Tang
Wu, Jyh-Horng
Source
Evidence-Based Complementary and Alternative Medicine
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-02
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The objective of this study is to assess antioxidant activities of methanolic extracts from the leaves of 18 indigenous tree species in Taiwan.
Results revealed that, among 18 species, Acer oliverianum exhibited the best free radical scavenging activities.
The IC50 values were 5.8 and 11.8 μg/mL on DPPH radical and superoxide radical scavenging activities, respectively.
In addition, A.
oliverianum also exhibited the strongest ferrous ion chelating activity.
Based on a bioactivity-guided isolation principle, the resulting methanolic crude extracts of A.
oliverianum leaves were fractionated to yield soluble fractions of hexane, EtOAc, BuOH, and water.
Of these, the EtOAc fraction had the best antioxidant activity.
Furthermore, 8 specific phytochemicals were isolated and identified from the EtOAc fraction.
Among them, 1,2,3,4,6-O-penta-galloyl-β-d-glucopyranose had the best free radical scavenging activity.
These results demonstrate that methanolic extracts and their derived phytochemicals of A.
oliverianum leaves have excellent antioxidant activities and thus they have great potential as sources for natural health products.
American Psychological Association (APA)
Ho, Shang-Tse& Tung, Yu-Tang& Chen, Yong-Long& Zhao, Ying-Ying& Chung, Min-Jay& Wu, Jyh-Horng. 2012. Antioxidant Activities and Phytochemical Study of Leaf Extracts from 18 Indigenous Tree Species in Taiwan. Evidence-Based Complementary and Alternative Medicine،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-1028173
Modern Language Association (MLA)
Ho, Shang-Tse…[et al.]. Antioxidant Activities and Phytochemical Study of Leaf Extracts from 18 Indigenous Tree Species in Taiwan. Evidence-Based Complementary and Alternative Medicine No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-1028173
American Medical Association (AMA)
Ho, Shang-Tse& Tung, Yu-Tang& Chen, Yong-Long& Zhao, Ying-Ying& Chung, Min-Jay& Wu, Jyh-Horng. Antioxidant Activities and Phytochemical Study of Leaf Extracts from 18 Indigenous Tree Species in Taiwan. Evidence-Based Complementary and Alternative Medicine. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-1028173
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1028173