Kim, S.M. Jung, Y.-J. Pan, C.-H. Um, B.-H. 2024-01-20T19:30:47Z 2024-01-20T19:30:47Z 2021-09-02 2010-05 1226-3311 https://pubs.kist.re.kr/handle/201004/131478 The genus Lespedeza belonging to Leguminosae is an annual or perennial herb, which has been used as a Chinese herbal medicine. Antioxidant activity on DPPH ((1,1)-diphenyl-2-picrylhydrazyl) and ABTS (2,2'- azino-bis(3-ethylenebenzothiazoline-6-sulfonic acid) radicals and the contents of total polyphenol and flavonoid were analyzed with 12 methanol extracts from six Lespedeza genus plants with different plant parts. The highest content of total polyphenol was detected in the leaves of Lespedeza×robusta (194.6 mg GAE/g), while the highest content of total flavonoid existed in the aerial part of Lespedeza thunbergii var. intermedia (47.9 mg QE/g). Generally, the amounts of polyphenol and flavonoid compounds were higher in the leaves than in the stems. The SC50 value of DPPH radical scavenging activity ranged from 10.16 to 90.94 ppm, of which the strongest activity was determined in the leaves of L. robusta. Most ABTS radical scavenging activities from the investigated methanol extracts were higher than that of L-ascorbic acid, implying the excellent antioxidant activity. The radical scavenging activity in this study showed high correlation with the amount of total polyphenol rather than that of total flavonoid. These data suggest that the methanol extracts from these Lespedeza spp. could be potential candidates for natural antioxidants. English Fabaceae Lespedeza Lespedeza thunbergii Antioxidant activity of methanol extracts from the genus Lespedeza Article 10.3746/jkfn.2010.39.5.769 1 Journal of the Korean Society of Food Science and Nutrition, v.39, no.5, pp.769 - 775 Journal of the Korean Society of Food Science and Nutrition 39 5 769 775 scopus kci ART001445770 2-s2.0-77957691741 Article Fabaceae Lespedeza Lespedeza thunbergii Antioxidant activity Lespedeza genus Medicinal plant Natural antioxidant Total flavonoid Total polyphenol