Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
Regular Articles
Antioxidant Activities and Free Radical Scavenging Potential of Bauhinia microstachya (RADDI) MACBR. (Caesalpinaceae) Extracts Linked to Their Polyphenol Content
Evandro Gomes da SilvaGuilherme Antonio BehrAlfeu Zanotto-FilhoRodrigo LorenziMatheus Augusto de Bittencourt PasqualiLuis Gustavo RavazoloCelso Luis Bordignon, Jr.Francilene Amaral da SilvaAna Lúcia AboyValquiria Linck BassaniAmélia Teresinha HenriquesFlávio Henrique ReginattoFelipe Dal-PizzolJosé Cláudio Fonseca Moreira
著者情報
ジャーナル フリー

2007 年 30 巻 8 号 p. 1488-1496

詳細
抄録
Aqueous and hydro-ethanolic extracts of Bauhinia microstachya leaves (AEBM and HEBM) were investigated for their phenolic content and phytochemical profile (by spectrophotometry and HPLC), and for their antioxidant activities and free radical scavenging potential in different in vitro systems (TRAP, TEAC, TBARS, nitric oxide, superoxide and hydroxyl radical). HEBM presented a 27.4% higher content of phenolics when compared to AEBM and a distinct phytochemical profile was observed. Our work suggests that both extracts have potent antioxidant activities and that their antioxidant capacity and efficiency vary according to the radical-generating system. In general, HEBM was more effective than AEBM in avoiding ROS-generating damage and in scavenging the various radicals formed. Nevertheless, when results were normalized to total phenolic content, a different profile of antioxidant activities and free radical scavenging potential was observed, particularly against oxidative lipid damage and superoxide radical. B. microstachya extracts may be considered an interesting source of natural antioxidants as well as other phenolic-rich plants.
著者関連情報
© 2007 The Pharmaceutical Society of Japan
前の記事 次の記事
feedback
Top