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Article: Free radical-scavenging activity of Taiwanese native plants.
- Article from:
- Phytomedicine: International Journal of Phytotherapy & Phytopharmacology
- Article date:
- March 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 Urban & Fischer Verlag. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Summary
The 70% aqueous acetone extracts of ten Taiwanese native plants were evaluated by various antioxidant assays, including 1, 1-diphenyl-2-picrylhydrazyl (DPPH), hydroxyl (*OH) radicals, and reducing power assay. In the present study, extracts of Acer buerferianum var. formosanum, Cleyera japonica var. morii, Cyclobalanopsis stenophylla var. stenophylloides, and Machilus zuihoensis exhibited stronger activity against DPPH radicals, and their I[C.sub.50] values ranged from 5.4 to 8.3 [micro]g/ml. The ten selected extracts effectively inhibited the formation of *OH generated in the Fenton reaction system. Among the extracts whose reducing power activities ...