Journal of the American Oil Chemists' Society

, Volume 75, Issue 4, pp 455–461

Antioxidant activity of burdock (Arctium lappa Linné): Its scavenging effect on free-radical and active oxygen

  • Pin-Der Duh

DOI: 10.1007/s11746-998-0248-8

Cite this article as:
Duh, PD. J Amer Oil Chem Soc (1998) 75: 455. doi:10.1007/s11746-998-0248-8


The antioxidant activity and free-radical and active oxygen-scavenging activity of burdock extracts were investigated. Of the solvents used for extraction, water yielded the greatest amount of extract that exhibited the strongest antioxidant activity. Water extracts of burdock (WEB) and hot water extracts of burdock (HWEB) exhibited comparable and marked activity on inhibition of linoleic acid peroxidation, indicating that heat treatment did not alter the antioxidant activity of WEB. WEB and HWEB produced significantly lower (P<0.05) malondialdehyde (MDA) in both linoleic acid and liposome model systems than did the control. Moreover, mixtures of tocopherol (Toc), WEB, and HWEB exhibited a remarkable synergistic antioxidant effect in a liposome system; WEB and HWEB thus potentiated the action of Toc. Furthermore, WEB and HWEB displayed a marked inhibitory effect on lipid peroxidation of rat liver homogenate in vitro. WEB and HWEB exhibited an 80% scavenging effect on α,α-diphenyl-β-picrylhydrazyl radical and marked reducing power, indicating that WEB and HWEB act as primary antioxidants. Both extracts at a dose of 1.0 mg exhibited a 60.4–65.0% scavenging effect on superoxide and an 80.5% scavenging effect on hydrogen peroxide. They also showed a marked scavenging effect on the hydroxyl radical. These results revealed that WEB and HWEB are also active as oxygen scavengers and as secondary antioxidants. Based on these results, termination of free-radical reactions and quenching of reactive oxygen species in burdock extracts are suggested to be, in part, responsible for the antioxidant activity of burdock extracts.

Key words

Active oxygenantioxidant activityburdockfree radicalhot water extracts of burdocklipid peroxidationreducing powerscavenging effectsynergistic effectwater extracts of burdock

Copyright information

© AOCS Press 1998

Authors and Affiliations

  • Pin-Der Duh
    • 1
  1. 1.Department of Food HealthChia Nan College of Pharmacy and ScienceTainan HsienTaiwan, Republic of China