南极地衣提取物抗氧化能力的初步研究 [A preliminary study on antioxidant ability of Antarctic lichen extract]

Author:
韩乐琳 魏江春 [Han L.-L. & Wei J.-C.]
Year:
2009
Journal:
Mycosystema
Pages:
28(6): 846-849
Url:
thumb
[in Chinese with English abstract: ] This paper deals with antioxidant ability of methanol extract from 4 Antarctic lichens, i.e. Usnea aurantiacoatra, Usnea antarctica, Sphaerophorus globosus and Cladonia sp. The antioxidant ability was detected by the linoleic acid, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical and reducing power systems, and compared with that of commercial antioxidant Vitamin C and butylated hydroxyanisole (BHA). The results showed that the lichens collected from Antarctica exhibited high antioxidant activities, and the antioxidant activity was concentration-dependent. Among 4 lichens, Usnea aurantiacoatra had the maximum inhibitory ratio of lipid peroxidantion and reducing power, Cladonia sp. showed the maximum scavenging activity on DPPH free radical. Besides, usnic acid from Usnea aurantiacoatra also exhibited antioxidant activity, however, its activity was lower than that of the crude extract from Usnea aurantiacoatra. Key words: antioxidant activity, lichen, Antarctica.
Id:
27345
Submitter:
zdenek
Post_time:
Wednesday, 24 August 2016 12:06