Determination of microcystin variants and related peptides present in a water bloom of Planktothrix (Oscillatoria) rubescens in a Spanish drinking water reservoir by LC/ESI-MS

被引：71

作者：

Barco, M ^{[1
]}

Flores, C ^{[1
]}

Rivera, J ^{[1
]}

Caixach, J ^{[1
]}

机构：

[1] CSIC, Mass Spectrometry Lab, Dept Ecotechnol, IIQAB, ES-08034 Barcelona, Spain

来源：

TOXICON | 2004年 / 44卷 / 08期

关键词：

water bloom; cyanobacteria; Planktothrix rubescens; Oscillatoria rubescens; microcystins; anabaenopeptins; oscillamide; LC/MS; occurrence; Spain;

D O I：

10.1016/j.toxicon.2004.08.011

中图分类号：

R9 [药学];

学科分类号：

1007 ;

摘要：

A water bloom of Planktothrix (Oscillatoria) rubescens was observed in a drinking water reservoir in central Spain in 2003. Microcystins where analysed by LC/ESI-MS in 21 samples collected from this reservoir in five different days between March and May. A demethylated variant of microcystin-RR was identified as the major microcystin in most samples. Trace levels of microcystin-LR, -RR and -YR were detected in some samples. Four less common microcystins, with [M+H](+) ions at m/z 960, 981, 1045 and 1053, were also found. Total extracellular microcystin concentration varied from 0.010 to 19.126 mug l(-1). Furthermore, anabaenopeptins B and F as well as Oscillamide Y were also identified in these samples. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：881 / 886

页数：6

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