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首页> 外文期刊>Bulletin of Environmental Contamination and Toxicology >Concentration and Bioaccumulation of Cyanobacterial Bioactive and Odorous Metabolites Occurred in a Large, Shallow Chinese Lake
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Concentration and Bioaccumulation of Cyanobacterial Bioactive and Odorous Metabolites Occurred in a Large, Shallow Chinese Lake

机译：大型浅中国湖泊中蓝藻生物活性和恶臭代谢产物的富集和生物富集

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摘要

The distributions of cyanobacterial bioactive and odorous metabolites were investigated in the fifth largest lake in China in the fishing season 2012. The highest microcystins (MCs) concentration in water reached 3.4 A mu g L-1. A high beta-ionone concentration reached 35.6 ng L-1 in water. Mean MCs concentration in muscle was highest in omnivorous Carassius auratus (20.9 ng g(-1) dry weight), followed by phytoplanktivorous Hypophthalmichthys molitrix (7.4 ng g(-1) DW) and carnivorous Coilia ectenes (3.0 ng g(-1) DW). The maximum off-flavor concentrations kept 9.5 A mu g kg(-1) wet weight for geosmin (C. auratus), 5.5 A mu g kg(-1) WW for beta-cyclocitral (C. ectenes) and 25.5 A mu g kg(-1) WW for beta-ionone (C. ectenes). Positive correlation was found between the off-flavor and fat contents in C. ectenes. To be different with MCs, beta-cyclocitral content was highest in fore-gut contents (87.6 A mu g kg(-1) WW) in H. molitrix. It should not be reliable to predict odorous compounds level in fish muscle by only measuring the off-flavor in lake water only.
机译：在2012年捕鱼季节，对中国第五大湖泊中的蓝细菌生物活性和有气味的代谢物的分布进行了调查。水中微囊藻毒素（MC）的最高浓度达到3.4 Aμg L-1。 β-紫罗兰酮的高浓度在水中达到35.6 ng L-1。杂食性Car鱼（20.9 ng g（-1）干重）的肌肉中平均MCs浓度最高，其次是植物浮游性下眼oli（7.4 ng g（-1）DW）和肉食性ilia纤毛（3.0 ng g（-1））。 DW）。臭味剂（C. auratus）的最大异味浓度保持9.5 Aμg kg（-1）湿重，β-cyclocitral（C. ectenes）保持5.5 Aμgkg（-1）WW和25.5 Aμg kg（-1）WW，用于β-紫罗兰酮（C. ectenes）。在C. ectenes的异味和脂肪含量之间发现正相关。与MC不同的是，H。molitrix中前肠的含量最高，β-cyclocitral含量最高（87.6 Aμg kg（-1）WW）。仅通过测量湖水中的异味来预测鱼肉中的臭味化合物水平应该是不可靠的。

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