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Updated: Aug 16, 2026

Evaluation of the Effect of Growth Factors on Chlorophylls a and b Production from Microalgae
Published on: October 25, 2024
New plastoquinones isolated from the brown alga, Sargassum micracanthum
Jun Mori1, Makoto Iwashima, Hiroko Wakasugi
1Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University; 2630 Sugitani, Toyama 930-0194, Japan.
Abstract:
Four new plastoquinones were isolated from the methanolic extract of the brown alga, Sargassum micracanthum. Their structures were elucidated based on spectroscopic analysis and chemical conversions from 2-geranylgeranyl-6-methyl-1,4-benzohydroquinone. These plastoquinones exhibited significant antioxidant activities such as an inhibitory effect on lipid peroxidation and a radical scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH). Some of the new plastoquiones showed cytotoxic activity against cancer cell line.
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