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Title 

LDL-Antioxidant Pterocarpans from Roots of Glycine max (L.) Merr.

Authors 

J H LeeB W LeeJ H KimTae Sook JeongMin Jung KimWoo Song LeeK H Park

Publisher 

American Chemical Society

Issue Date 

2006

Citation 

Journal of Agricultural and Food Chemistry, vol. 54, no. 6, pp. 2057-2063

Keywords 

atherosclerosiscoumestrolglycine max (L.) Merr. rootsLDL-antioxidationpterocarpanglycine maxplant rootlipoproteins, LDLplant rootspterocarpans

Abstract 

The methanolic root extract of Glycine max (L.) Merr. was chromatographed, which yielded 10 flavonoids, including three isoflavones 1-3, five pterocarpans 4-8, one flavonol 9, and one anthocyanidin 10. All isolated compounds were examined for LDL-antioxidant activities using four different assay systems on the basis of Cu2+-mediated oxidation. Among them, seven compounds showed potent LDL-antioxidant activities in the thiobarbituric acid reactive substances (TBARS) assay, the lag time of conjugated diene formation, relative electrophoretic mobility (REM), and fragmentation of apoB-100 on copper-mediated LDL oxidation. Three pterocarpans 4, 6, and 7, never reported as LDL-antioxidant, showed potent activities with IC50 values of 19.8, 0.9, 45.0 μM, respectively, in comparison with probucol (IC50 = 5.6 μM) as positive control. Interestingly, coumestrol 6 (IC50 = 0.9 μM) showed 20 times more activity in the TBARS assay than genistein (IC50 = 30.1 μM) and daidzein (IC50 = 21.6 μM), representative antioxidants in soybean. Moreover, coumestrol 6 had an extended lag time of 190 min at 3.0 μM in measuring conjugated diene formation, while both genistein (120 min) and daidzein (93 min) lag times were extended to less than 120 min at the same concentration.

ISSN 

0021-8561

Link 

http://dx.doi.org/10.1021/jf052431c

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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