Estrogen-like Cell Proliferation Abilities of Korea Forest Plant Resources on MCF-7 Cells and Analysis of Active Compounds

Abstract

This study conducted a comprehensive analysis of functional substances and explored their biological activities using colorimetric and chromatographic techniques to identify high-value materials from 14 species of forest plants native to Korea. Comparative analysis between plant species included calculating the total polyphenol and flavonoid contents and qualitative and quantitative analysis of the phytochemical compounds caffeic acid (1), p-coumaric acid (2), and quercetin (3) using HPLC, and antioxidant activity tests (DPPH and ABTS+) and menopausal symptom relief tests (E-screen assay) to investigate their biological activities. The results highlighted Cercidiphyllum japonicum (FR 4), Aruncus dioicus (FR 6), and Pseudocydonia sinensis (FR 8) as excellent forest plant resource materials among the 14 forest plant resources. Notably, FR 4 exhibited significant activity in the E-screen assay. On the basis of these findings, we propose the use of FR 4 as a valuable material. Further analysis identified the phytochemical compounds maltol (4), chlorogenic acid (5), ellagic acid (6), and quercitrin (7) in FR 4 and analyzed their biological activities. Compounds 2–6 found in FR 4 were confirmed to possess strong antioxidant activity, and an E-screen assay revealed an excellent cell proliferation rate for quercitrin (7). This suggests that quercitrin (7) in FR 4 may be a significant indicator of the alleviation of menopausal symptoms.