Antioxidative Effects of Extracts from Different Parts of Epimedium koreanum Nakai

Abstract

This study was conducted to investigate the antioxidant activities of 70% ethanol extracts from different parts (root, stem, and leaf) of Epimedium koreanum Nakai. Ethanol extracts from the three parts of Epimedium koreanum Nakai were assessed for total phenolic content, total flavonoid content, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity, myoglobin protective ratio, and ferric reducing antioxidant power (FRAP). Root part showed the highest total phenolic content (2.468±0.017 mg chlorogenic acid equivalent/g) and total flavonoid content (2.071±0.002 mg quercetin equivalent/g). Leaf part showed the strongest radical scavenging activities (DPPH radical; 80%, myoglobin protective ratio; 90% and FRAP; 98.7% at 20 mg/mL). Root part showed the highest ABTS radical scavenging at 1 mg/mL. Therefore, the results of the antioxidant activity test were correlated with total phenolic and flavonoid content values. Thus, Epimedium koreanum Nakai has great potential as a natural source for human health.Key words: Epimedium koreanum Nakai, antioxidant, phenol, radical scavenging activity, myoglobin protective

Characterization, Antioxidant Potential, and Pharmacokinetics Properties of Phenolic Compounds from Native Australian Herbs and Fruits

“…The findings of our study are in accordance with the previous studies that reported that herbs and spices with the higher TPC possessed higher antioxidant activity [3,8]. The ABTS scavenging activity was higher than DPPH probably because the ABTS assay was used to measure the antioxidant capacity of hydrophobic and hydrophilic phenolic compounds [23,24]. The ABTS and DPPH of bush mint (114.44 ± 1.01 mg AAE/g) and (28.86 ± 0.49 mg AAE/g) were also found to be higher than what we previously investigated in Australian grown mint (106.99 ± 2.90 mg AAE/g) and (21.65 ± 0.36 mg AAE/g), respectively [3].…”

Correlation of anti-wrinkling and free radical antioxidant activities of Areca nut with phenolic and flavonoid contents

“…The ABTS radical scavenging activity results showed relatively higher activity than the DPPH radical scavenging activity. This is because it measures the antioxidant activity of both hydrophilic and hydrophobic samples (Re et al, 1999;Choi & Shin, 2015;Lee et al, 2016).…”

Correlation of the free radical and antioxidant activities of Eriobotrya Japonica Lindl. with phenolic and flavonoid contents

“…ABTS radical scavenging activity results showed relatively higher activity than DPPH radical scavenging activity. ABTS is capable of measuring both the hydrophilicity and hydrophobic materials of the radical scavenging activity from the extract sample and thus exhibiting high antioxidant activity (Re et al, 1999;Choi & Shin, 2015;Lee et al, 2016b).…”