This invention offers an effective method of inhibiting the growth of toxic bloom algae caused by cyanobacteria Mycrocystis aeruginosa in freshwater environments comprising administering an effective amount of 5,6-dichlorogramine to the freshwater. Also, the invention offers an effective method of inhibiting the growth of toxic bloom algae caused by M. aeruginosa comprising administering an effective amount of 5,6,7-trichlorogramine to the freshwater. Both compounds, 5,6-dichlorogramine and 5,6,7-trichlorogramine, may be administered individually or in combination to the freshwater. Both compounds are individually very potent and only need to be administered at a very low concentration to be effective at inhibiting the growth of M. aeruginosa in freshwater environments. Both 5,6-dichlorogramine and 5,6,7-trichlorogramine are each individually effective at inhibiting M. aeruginosa at low concentrations, between about 0.01 mg/L and about 0.05 mg/L, or more specifically at a concentration of about 0.03 mg/L. Also, both 5,6-dichlorogramine and 5,6,7-trichlorogramine individually have long potency durations, needing to be added no more frequently than once every 60 days to freshwater to inhibit the growth of M. aeruginosa.
本发明提供了一种有效的方法,用于抑制淡
水环境中由蓝藻微囊藻(Mycrocystis aeruginosa)引起的有毒藻类
水华的生长,包括向淡
水中投入有效量的5,6-二
氯格拉明。此外,本发明还提供了一种有效的方法,用于抑制由M. aeruginosa引起的有毒藻类
水华的生长,包括向淡
水中投入有效量的5,6,7-三
氯格拉明。这两种化合物,5,6-二
氯格拉明和5,6,7-三
氯格拉明,可以单独或联合向淡
水中投入。这两种化合物分别非常有效,只需要以非常低的浓度投入即可在淡
水环境中抑制M. aeruginosa的生长。5,6-二
氯格拉明和5,6,7-三
氯格拉明都在低浓度下单独有效,浓度在约0.01 mg/L至约0.05 mg/L之间,或更具体地在约0.03 mg/L的浓度下有效抑制M. aeruginosa的生长。此外,5,6-二
氯格拉明和5,6,7-三
氯格拉明单独具有长效持久性,只需每60天向淡
水中添加一次即可抑制M. aeruginosa的生长。