TY - JOUR
T1 - Free radical-scavenging activity of Taiwanese native plants
AU - Hou, W. C.
AU - Lin, R. D.
AU - Cheng, K. T.
AU - Hung, Y. T.
AU - Cho, C. H.
AU - Chen, C. H.
AU - Hwang, S. Y.
AU - Lee, M. H.
PY - 2003/3
Y1 - 2003/3
N2 - 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 IC50 values ranged from 5.4 to 8.3 μg/ml. The ten selected extracts effectively inhibited the formation of •OH generated in the Fenton reaction system. Among the extracts whose reducing power activities were determined, A. buerferianum var. formosanum, C. japonica var. morii, C. stenophylla var. stenophylloides, Eriobotrya deflex, and M. zuihoensis showed high activity. The results indicate the 70% aqueous acetone extracts of A. buerferianum var. formosanum, C. japonica var. morii, C. stenophylla var. stenophylloides, and M. zuihoensis with great potency in these assay systems and may be candidates for the development of natural antioxidants.
AB - 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 IC50 values ranged from 5.4 to 8.3 μg/ml. The ten selected extracts effectively inhibited the formation of •OH generated in the Fenton reaction system. Among the extracts whose reducing power activities were determined, A. buerferianum var. formosanum, C. japonica var. morii, C. stenophylla var. stenophylloides, Eriobotrya deflex, and M. zuihoensis showed high activity. The results indicate the 70% aqueous acetone extracts of A. buerferianum var. formosanum, C. japonica var. morii, C. stenophylla var. stenophylloides, and M. zuihoensis with great potency in these assay systems and may be candidates for the development of natural antioxidants.
KW - 1,1-diphenyl-2-picrylhydrazyl (DPPH)
KW - Hydroxyl radical (•OH)
KW - Reducing power
KW - Taiwanese native plants
UR - http://www.scopus.com/inward/record.url?scp=0344837874&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0344837874&partnerID=8YFLogxK
U2 - 10.1078/094471103321659898
DO - 10.1078/094471103321659898
M3 - Article
C2 - 12725572
AN - SCOPUS:0344837874
SN - 0944-7113
VL - 10
SP - 170
EP - 175
JO - Phytomedicine
JF - Phytomedicine
IS - 2-3
ER -