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1 Polish Journal of Environmental Studies

1 2010

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Chemical composition in aqueous extracts of Potamogeton malaianus and Potamogeton maackianus and their allelopathic effects on Microcystis aeruginosa

100%

Wang H. Q. , Cheng S.-P. , Zhang S.-H. , He F. , Liang W. , Zhang L.-P. , Hu C.-Y. , Ge F.-J. , Wu Z.-B.

Polish Journal of Environmental Studies

2010

tom 19

nr 1

213-218

The ethyl acetate fractions of aqueous extracts from two submerged macrophytes Potamogeton malaianus and Potamogeton maackianus were analyzed by gas chromatograph-mass spectrometry (GC-MS). The allelopathic activities and joint effects of the main components in ethyl acetate fractions on Microcystis aeruginosa were also determined. The results indicated that primary compositions in the ethyl acetate fractions were fatty acids, phenolic acids and hydroxy fatty acids that possessed antialgal activities. The joint effect assay for palmitic acid, benzoic acid and lactic acid showed that the additional effects were observed in the mixed organic acid, namely, the inhibitory effects of mixture groups were stronger than that of each compound alone on the growth of M. aeruginosa.