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Microbiology and Biotechnology Letters


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Food Microbiology (FM)  |  Bioactive Compounds or Metabolites: Function and Application

Microbiol. Biotechnol. Lett. 2021; 49(1): 24-31

Received: October 21, 2020; Accepted: November 23, 2020

Melanogenesis Inhibitory Activity of Epicatechin-3-OGallate Isolated from Polygonum amphibium L.

Melanogenesis inhibitory activities of Epicatechin-3-O-gallate isolated from Polygonum amphibium L.

Young Kyung Lee, Buyng Su Hwang, Yong Hwang, Seung Young Lee, Young Taek Oh, Chul Hwan Kim, Hyeon Ju Nam, and Yong Tae Jeong*

Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea

Correspondence to :
Yong Tae Jeong,

This study aimed to investigate the melanogenesis inhibitory activity of epicatechin-3-O-gallate (ECG) isolated from Polygonum amphibium L. ECG was isolated from the ethanol extract of P. amphibium L, and its chemical structure was determined using spectroscopic methods such as LC-ESI-MS, 1D-NMR, and UV spectroscopy. ECG inhibited the melanogenesis of B16F10 cells in a dose-dependent manner. Particularly, it decreased the melanin content by 27.4% at 200 μM concentration, compared with the control, in B16F10 cells, without causing cytotoxicity. It is noteworthy that the expression of three key proteins, including tyrosinase, tyrosinase-related protein-1 (TRP-1), TRP-2, and microphthalmia-associated transcription factor (MITF), involved in melanogenesis, is significantly inhibited by ECG. The ECG isolated in this study caused the inhibition of body pigmentation and tyrosinase activity in vivo in the zebrafish model. These results suggest that the ECG isolated from P. amphibium L. is an effective anti-melanogenesis agent.

Keywords: Polygonum amphibium L., melanogenesis, B16F10, Epicachin-3-O-gallate

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