Antioxidative Activities of Water Extracts from Different Parts of Taraxacum officinale

Abstract

This study was conducted to examine antioxidative and physiological activities of water extracts from different parts (flower, leaf, root, and the whole plant) of Taraxacum officinale. The water extracts from different parts were measured to obtain total flavonoids content, total polyphenol content, electron donating ability, SOD-like activity, nitrite-scavenging ability and tyrosinase inhibition effects. Total flavonoids and total polyphenol contents in flower extract were 32.91 mg/g and 49.31 mg/g, respectively, which were much higher than those of any other parts. The electron donating abilities of flower, leaf, the whole plant, and root extracts were 87.07%, 87.66%, 81.06% and 66.20%, respectively at a concentration of 1 mg/mL. The activities increased in a dose-dependent manner. The SOD-like activity of water extracts from different parts showed 9.07～10.97% at a concentration of 1 mg/mL. The nitrite-scavenging abilities of flower and leaf extracts measured at pH 1.2 were 36.34% and 38.16%, respectively at a concentration of 1 mg/mL. Tyrosinase inhibition activity of the leaf extract at a concentration of 1 mg/mL was the highest (34.19%) and that of the whole plant and root extracts was shown to be more than 20%. These results suggest that water extracts from different parts of Taraxacum officinale could be used as an antioxidative functional food source.

Screening of Peruvian Medicinal Plants for Tyrosinase Inhibitory Properties: Identification of Tyrosinase Inhibitors in Hypericum laricifolium Juss

“…In Korea, one study reported on the antioxidant capacity and tyrosinase inhibition activity of water extracts of various parts of T. Officinale. The leaf extract (1 mg/mL) showed the highest tyrosinase inhibition (34.2%), while the roots and whole plant showed tyrosinase inhibition of more than 20% [ 32 ]. M. volcanica contains anthraquinone- O -glycosides, and according to some investigations, some anthraquinones have an anti-tyrosinase effect [ 33 , 34 ].…”

Habitat conditions strongly affect macro- and microelement concentrations in Taraxacum microspecies growing on coastal meadows along a soil salinity gradient

“…Traditional folk medicine uses, inter alia, diuretic and antiedematous properties of dandelions (González-Castejón, Visioli & Rodriguez-Casado, 2012). More recent studies on dandelions have addressed mainly their antioxidant (e.g., Han et al, 2010;Saratale et al, 2018), anti-inflammatory (e.g., Jeon et al, 2008;Koh et al, 2010) and antitumor (e.g., Yamabe et al, 2014;Saratale et al, 2018) properties.…”