Diarrhetic Shellfish Poison group (DSP) okadaic Acid ve DTX on (LC-MS / MS)
Planktonic cell organisms, which can reproduce in aquatic ecosystems in the world, consist of phytoplankton group. According to the estimates, the percentage of known phytoplankton species living in the world's seas is close to 7 and produces harmful substances. The number of these species is around 200. Half of them are dinoflagellates. Diatoms that cause harmful reproduction are also very important second algae. However, not all these reproductions are toxic. Almost one percent of the phytoplankton flora found in the waters of the earth is defined as toxic.
The first toxin chemically identified among the toxins that cause poisoning of the shellfish is ocadaic acid.
DSP toxins in shellfish include ocaic acid group toxins, pektenotoxin and yessotoxin. Pektenotoxins are produced by dinophysis species and yessotoxins are produced by prorocentrum species. The toxins of the ocaic acid group comprise dinophysis toxins DTX1, DTX2, DTX4 and the acyl derivatives DTX3.
In our country, studies on microalgae reproduction in the seas have intensified. Fish deaths on the shores of the Aegean Sea for the first time in the years 1955 and 1960, and it was determined that dinoflagellatlar cause. Scientists are working on red-tide and other harmful microalgae reproduction, which has become increasingly common to date. In PSP-related fish deaths, a yellowish color is formed in the body and gills of the fish.
The main analyzes carried out within this framework are as follows:
- Diarrhetic Shellfish Poison Group (DSP) - Okadaic Acid
- Diarrhetic Shellfish Poison Group (DSP) - Dinophysis Toxin1 (DTX-1)
- Diarrhetic Shellfish Poison Group (DSP) - Dinophysis Toxin2 (DTX-2)
Within the scope of biotoxin analyzes in authorized laboratories, octaic acid and DTX analyzes are also performed among the Diarrhetic Shellfish Poison Group (DSP) poisoning analyzes by means of liquid chromatography - mass - mass spectrometry method called LC-MS / MS. These analyzes are based on standards and analysis methods published by domestic and foreign organizations.