Green alga Ulva pertusa--a new source of bioactive compounds with antialgal activity

Environmental Science and Pollution Research International
Sun Ying-yingWang Chang-hai

Abstract

We tested the effects of solvent fractions (FA, FB, FC, and FD), which partitioned by liquid-liquid extraction from the methanol extract of Ulva pertusa, on the growth of red tide microalgae (Karenia mikimitoi, Skeletonema costatum, Alexandrium tamarense, Heterosigma akashiwo, Prorocentrum donghaiense), and FA, FB, and FC exhibited significantly antialgal activity. The chemical constituent analysis showed the existence of bioactive compounds such as phenols and alkaloids. Further, four solvent fractions were applied to silica gel column and repeated preparative TLC to produce 13 samples and their purity qualified as thin-layer chromatographic grade. Among these purified samples, FA111, FB411, FC411, FD111, and FD211 exhibited stronger antialgal activity. Furthermore, their functional groups were analyzed by colorimetric methods and UV spectra data. FD111 and FD211 were temptatively identified as alkaloids; the others were initially identified as phenolic acids. This is a preliminary study and the structure identification of these purified samples requires further investigation. While concentration of these purified samples in this algae was very small, they showed excellent effects against red tide microalgae.

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Citations

Jan 4, 2018·Environmental Science and Pollution Research International·Ying-Ying SunYin-Fang Pu
Aug 29, 2017·Marine Drugs·Hans Uwe Dahms, Sergey Dobretsov
Jun 15, 2018·Journal of Applied Phycology·Mahasweta SahaPunyasloke Bhadury

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