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http://dx.doi.org/10.9721/KJFST.2012.44.3.337

Total Polyphenols, Total Flavonoid Contents, and Antioxidant Activity of Korean Natural and Medicinal Plants  

Kim, Eun-Jin (Department of Food and Nutrition, Graduate School, Chung-Ang University)
Choi, Joo-Yeon (Department of Food and Nutrition, Graduate School, Chung-Ang University)
Yu, Mi-Ri (Department of Food and Nutrition, Graduate School, Chung-Ang University)
Kim, Mi-Young (Department of Food and Nutrition, Graduate School, Chung-Ang University)
Lee, Sang-Hyun (Department of Integrative Plant Science, School of Bioresource and Bioscience, Chung-Ang University)
Lee, Bog-Hieu (Department of Food and Nutrition, Graduate School, Chung-Ang University)
Publication Information
Korean Journal of Food Science and Technology / v.44, no.3, 2012 , pp. 337-342 More about this Journal
Abstract
The purpose of this study was to investigate total polyphenols, total flavonoid, and DPPH radical scavenging activity in 26 species of Korean natural plants and 14 species of medicinal plant extracts. The plant containing the highest total polyphenols and total flavonoids were Plantago asiatica, and Lespedeza cuneata G. Don, respectively. The content of polyphenols and flavonoids in natural plants was the highest in Lespedeza cuneata G. Don, which also demonstrated high DPPH radical scavenging activity. In medicinal plant extract, Saururus chinensis (Lour.) Baill and Artemisiae Asiaticae Herba had the highest level of total polyphenols (194.60 and 203.92 mg/g extract, respectively) and DPPH radical scavenging activity. Diospyros kaki Thunb and Dryopteris crassirhizoma did not contain high levels of total polyphenols (112.98, 121.46 mg/g extract, respectively) and flavonoids (46.10, 58.69 mg/g extract respectively), but DPPH radical scavenging activity was relatively high. Further study regarding plants that exhibit higher total polyphenols, total flavonoid, and DPPH radical scavenging activity is needed.
Keywords
natural plants; medicinal plants; antioxidant activity; polyphenols; flavonoid;
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