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

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.

Vitamin C, Total Polyphenol, Flavonoid Contents and Antioxidant Capacity of Several Fruit Peels

“…오늘날 건강에 대한 관심이 높아짐에 따라 노화 억제와 성인병 예방을 위한 항산화물질에 대한 관심이 고조되면서 자유라디칼 을 방어하는 항산화물질에 대한 연구가 활발히 이루어지고 있다 (3,4). 그 중 독성 및 발암성이 제기되는 합성 항산화제 대신 기 능성과 안전성면에서 두각을 나타내는 식물기원 천연 항산화제 의 연구가 활발히 진행되고 있는 추세이다 (3)(4)(5).…”

Plant Maturity and Vernalization Affect Flowering in <i>Dianthus japonicus</i> Thunb.

“…A total of 179 and 4,179 species of native plants are distributed in Korea according to the Korea National Arboretum of the Korea Forest Service (2017). This is significantly higher than the United Kingdom (2,000 species) and Denmark (1,500 species) in terms of the number of species per unit area of the country (Kim et al, 2012). However, due to a lack of systematic research on the physiology of native ornamental plants, native wild flowers in Korea have not been developed as commercial varieties.…”

Cultivation characteristics and flavonoid contents of wormwood (Artemisia montana Pamp.)

“…Ae-yeop contains various compounds such as flavonoids, steroids, phenylpropanoids, terpenoids, peptides, sesquiterpenoids, monoterpenoids, and diterpenoids [8,9]. Among these, flavonoids are known to possess excellent antioxidant activity that effectively eliminates reactive oxygen species, as well as a variety of other biological activities, including anti-cancer and anti-inflammatory activities [10]. The major flavonoids in Ae-yeop include eupatilin, jaceosidin, apigenin, and eupafolin [9,11].…”