期刊
FITOTERAPIA
卷 82, 期 6, 页码 841-848出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fitote.2011.04.006
关键词
Oroxylum indicum; Bignoniaceae; Flavonoid; Antioxidant activity; DPPH; ORAC
资金
- Ministry of Science and Technology of P.R. China [2009ZX09308-005]
Three new flavonoid glycosides (1-3) and nineteen known compounds (4-22) were isolated from the aqueous ethanolic extract of the seed of Oroxylum indicum. The structures of 1-3 were elucidated on the basis of spectroscopic analysis. Antioxidant activities of all the isolated compounds were evaluated using a DPPH and an ORAC assay. Compounds 3, 5-7, 9 and 12 exhibited potent antioxidant activity in the DPPH assay, while compounds 3-15 showed potent antioxidant capacity in the ORAC assay, and seven antioxidant flavonoids (4-6, 8, 9, 11, 12) were detected as the main ingredients in the methanolic extract of seed of O. indicum using an HPLC analysis. (C) 2011 Elsevier B.V. All rights reserved.
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