嗅味物质对铜绿微囊藻的溶藻效应  

Lysis of Microcystis aeruginosa with taste and odor compounds

作　　者：张可佳[1,2] 高乃云[2] 邵煜[1] 李聪[1] 张土乔[1] 杨玉龙[1] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中南大学学报（自然科学版）》2013年第4期1714-1718,共5页Journal of Central South University:Science and Technology

基　　金：国家"十一五"科技支撑计划项目(2008ZX07421-001;2009ZX07424-004);国家自然科学基金资助项目(51208456);中国博士后科学基金资助项目(2011M501005);教育部高等学校博士点专项基金资助项目(20110101120033)

摘　　要：考察β-环柠檬醛,β-紫罗兰酮,庚醛,甲硫醚和二甲基三硫醚等5种藻类代谢的嗅味物质对铜绿微囊藻的溶藻效应。研究结果表明:相同浓度下嗅味物质对藻细胞的破坏作用大小顺序依次是:β-环柠檬醛,β-紫罗兰酮,庚醛,二甲基三硫醚,甲硫醚。其中甲硫醚的溶藻效应较低,基本不引起藻液变色,经过92 h后胞外微囊藻毒素的浓度仍与自然状态下的浓度相近。质量浓度为1 g/L的β-环柠檬醛能在1 h内将藻液由绿色变成蓝色,使细胞光合活性降为0。胞内的微囊藻毒素LR随着细胞的破裂释放到溶液中,溶解态的微囊藻毒素-LR质量浓度最高达到2 628.3μg/L。β-环柠檬醛能对微囊藻细胞引起抑制作用的临界质量浓度为0.1 g/L。Algae-lytie effects of five kinds of algal odorants including β-cyclocitral, β-ionone, heptanal, dimethylsulfide and dimethyl trisulfide on Microcystis aeruginosa were investigated. The results show that the sequence of damage degree at the same concentration is： β-cyclocitral, β-ionone, heptanal, dimethyl trisulfide, dimethylsulfide. The lyric effect of dimethylsulfide is not obvious and the concentration of extracellular MC-LR is similar to a natural environment after 92 h. 1 g/L β-cyclocitral causes a characteristic color change of culture broth from green to blue and the activity value decreases to 0 in 1 h. Microcystin-LR release to the solution after the cell is damaged and the maximum mass concentration is 2 628.3 μg/L. The minimum inhibitory mass concentration of β-cyclocitral is 0.1 g/L.

关 键 词：嗅味物质 铜绿微囊藻 溶藻效应 β-环柠檬醛 微囊藻毒素 

分 类 号：X524[环境科学与工程—环境工程]