PSP toxins from Aphanizomenon flos-aquae (cyanobacteria) collected in the Crestuma-Lever reservoir (Douro river, northern Portugal).
The presence of paralytic shellfish poisoning (PSP) toxins in cultures of Aphanizomenon flos-aquae, isolated from the Crestuma-Lever reservoir, was found by reversed phase high performance liquid chromatography employing two isocratic elution systems for the separation of PSP toxins. With the first isocratic elution protocol, the presence of apolar toxins as saxitoxin, decarbamoyl saxitoxin and neosaxitoxin not detected. On the other hand, GTX4, GTX1 and GTX3 as well as Cs toxins were present either in the Aphanizomenon flos-aquae cells collected directly from the bloom or in the other toxic isolates priorly cultivated in laboratory conditions.
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Laboratory de Parasitologia, Instituto Nacional de Saúde Dr. Ricardo Jorge, Largo 1 de Dezembro, 4000 Porto, Portugal. icc.lmicinsaprt@mail.telepac.pt
Franco Soler
J M
JM
Fidalgo
M L
ML
Fernández-Vila
P
P
D001427:Bacterial Toxins / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D000458:Cyanobacteria / Q000737:chemistry*; D011174:Portugal; D012758:Shellfish
D001427:Bacterial Toxins