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. 2018 Mar 19;28(1):201-207.
doi: 10.1007/s10068-018-0352-y. eCollection 2019 Feb.

Antioxidant activity and contents of leaf extracts obtained from Dendropanax morbifera LEV are dependent on the collecting season and extraction conditions

Ji Sun Youn  1 , Young-Jun Kim  1 , Hye Jin Na  2 , Hae Rim Jung  2 , Chang Khil Song  3 , So Young Kang  3 , Ji Yeon Kim  1
Affiliations

Antioxidant activity and contents of leaf extracts obtained from Dendropanax morbifera LEV are dependent on the collecting season and extraction conditions

Ji Sun Youn et al. Food Sci Biotechnol. .

Abstract

This study compared the antioxidant activity of extracts from Dendropanax morbifera (D. morbifera) Levillis leaves. The concentrations of flavonoids and polyphenols were measured in extracts of D. morbifera leaves. The antioxidant activities were examined by ABTS and DPPH radical scavenging activity and ferric reducing antioxidant power (FRAP). Total flavonoid and polyphenol contents, and FRAP were highest in the 30% ethanol extract collected in May. The ABTS and DPPH radical scavenging activities were the highest in the 60% ethanol extract harvested in May. For investigating the relationship between antioxidant activity and specific polyphenols, rutin and chlorogenic acid of the polyphenol component were quantified by LC-MS/MS analysis. The concentrations of them were highest in the 60% ethanol extract collected in May, and showed positive correlations with antioxidant activities. The optimal extraction conditions to yield the most effective antioxidant activity were obtained using a 60% ethanol extraction solvent with samples collected in May.

Keywords: Antioxidant activity; Chlorogenic acid; Dendropanax morbifera; Flavonoids; Rutin.

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Figures

Fig. 1
Fig. 1
Total flavonoid (A) and polyphenol (B) contents of different extracts of D. morbifera. Values are presented as the mean ± SD. Superscripts among groups are significantly different (P < 0.05), as determined by the Duncan’s test
Fig. 2
Fig. 2
Ferric reducing antioxidant power (FRAP) values of different extracts of D. morbifera. Values are presented as the mean ± SD. Superscripts among groups are significantly different (P < 0.05), as determined by the Duncan’s test
Fig. 3
Fig. 3
Relationship between antioxidant activities and antioxidants taken from different extracts of D. morbifera. Correlations are presented as the Pearson’s correlation coefficient (R2). (A) Correlation between antioxidants (flavonoids and polyphenols) and ABTS activity, DPPH activity and FRAP. (B) Correlation between polyphenols (rutin and chlorogenic acid) and ABTS activity, DPPH activity and FRAP
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