Inhibitory effects of the extracts with different solvents from three compositae plants on cyanobacterium Microcystis aeruginosas

• Published in: Science China. Chemistry Vol. 54; no. 7; pp. 1123 - 1129
• Main Authors: Ni, LiXiao, Hao, XiangYang, Li, ShiYin, Chen, ShiJin, Ren, GaoXiang, Zhu, Liang
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science China Press 01-07-2011; Springer Nature B.V
• Subjects: Alkalinity; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Cyanobacteria; Ethanol; Ethyl acetate; Eutrophic waters; Herbicides; Microcystis; Terpenes; fractional extraction; antialgal activity; compositae plants
• ISSN: 1674-7291; 1869-1870
• DOI: 10.1007/s11426-011-4269-z

The algicidal activity of the terrestrial plants is a novel and promising means for alga control of eutrophic waters. In this study, three compositae plants —
Artemisia annua
(
A. annua
),
Conyza canadensis
(
C. canadensis
), and
Erigeron annuus
(
E. annuus
) were selected and antialgal activity of petroleum ether (PE), ethyl acetate (EA) and ethanol extracts of these plants on blue algae
Microcystis aeruginosa
was investigated. The result shows the EA extracts of these plants present the stronger inhibitory effects. The results of the further separation of PE and EA extracts according to water-solubility and acidity or alkalinity show that fatty acids and terpenoids in
A. annua
, terpenoids and organic acid in
C. Canadensis
and
E. Annuus
may be the main antialgal active constituents. This study suggested that the EA extracts of these plants could become the potential algicide to prevent water blooming.