کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1218930 967631 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Paralytic shellfish poisoning toxin profiles in green mussels from Trinidad and Venezuela
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Paralytic shellfish poisoning toxin profiles in green mussels from Trinidad and Venezuela
چکیده انگلیسی

Paralytic shellfish poisoning (PSP) toxins were determined in green mussels (Perna viridis) from the Gulf of Paria between Trinidad and Venezuela, as well as from the northern coast of Venezuela. Aqueous extracts of samples were purified by passage through SPE C-18 and carboxylic columns, and oxidized by periodate and peroxide reagents, before analysis by LC with fluorescence detection. Spike and recovery of mixed toxins from uncontaminated mussel tissues, with % recoveries from 83 to 103, validated the method of analysis. Saxitoxin (STX), gonyautoxins (GTX), their analogs, and C toxins were identified in mussels from both countries. In the Gulf of Paria, PSP toxin profiles in mussels from the north were similar to each other, as were those from the south. However, the toxin profiles and concentrations varied widely among geographic areas, with GTX analogs and C1,2 toxins predominating. The highest total PSP concentrations (468 μg/100 g), as well as the largest number of individual toxins identified (7 of 8), were found at Playa Patilla on the northern coast of Venezuela, followed by Chaguaramas (244 μg/100 g; 6 of 8) and Güiria (154 μg/100 g; 5 of 8) in the northern Gulf of Paria in Trinidad. While the calculated STX equivalents in each sample were below the maximum permissible level (80 μg/100 g) permitted by Venezuela and other countries, its very detection prohibits their consumption in Trinidad under existing legislation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Composition and Analysis - Volume 19, Issue 1, February 2006, Pages 88–94
نویسندگان
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