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Phenolic content and antioxidant activity of sweet wormwood tea extracts using different solvents
J Plant Biotechnol 2019;46:338-345
Published online December 31, 2019
© 2019 The Korean Society for Plant Biotechnology.

Kyeoung Cheol Kim · Ju-Sung Kim

Major in Plant Resource and Environment, SARI, Jeju National University, Jeju, 63243, Korea
Correspondence to: e-mail:
Received December 10, 2019; Revised December 25, 2019; Accepted December 25, 2019.
cc This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The selection of a suitable solvent is very important when preparing an extract. However, the effect of ethanol solvent concentration in the extraction of sweet wormwood tea has not been reported. Thus, extracts were prepared from sweet wormwood tea using water and various ethanol concentrations, and the phenolic compounds, antioxidants and anti-enzyme activities of the extracts were analyzed. The phenolic acid and flavonoid components differed according to extraction solvent, which also resulted in different antioxidant and antienzyme activities. In particular, flavonoid rhamnetin was not extracted using 80% and 99.5% ethanol and was highest when 60% ethanol was used for extraction. In the case of chlorogenic acid, the highest extraction efficiency was obtained with 80% ethanol. These results suggest the need for research to increase specific extraction efficiency by targeting major compounds that affect physiological activity.
Keywords : Polyphenol, Rhamnetin, Solvent extraction, Sweet wormwood tea

December 2019, 46 (4)
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