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Screening of Domoic Acid, a Marine Neurotoxin, in Korean Shellfishes  

Koh, Eun-Mi (Department of Food and Nutrition, Seoul National University)
Kwon, Hoon-Jeong (Department of Food and Nutrition, Seoul National University)
Publication Information
Korean Journal of Food Science and Technology / v.34, no.6, 2002 , pp. 1130-1133 More about this Journal
Abstract
Domoic acid, and amnesic shellfish poison, is a neurotoxin frequently found in shellfishes. Guidance level for the consumable shellfish has been established as $20\;{\mu}g$ domoic acid/g by Health and Welfare Canada and U.S. FDA. Domoic acid is produced by pennate diatom, a Nitzschia pungens f. multiseries ingested by the shellfish. Content of domoic acid in shellfish samples collected along the Korean shoreline from May to December of 1999 was analyzed. The collection included 1 Gastropoda (Murex shell) and 11 Bivalvias (oyster, little neck clam, orient hard clam, venus clam, surf clam, ark shell, hard-shelled mussel, pen shell, jack-knife clam, pink butterfly shell, and granulated ark shell). Samples were homogenized, extracted with 50% methanol, filtered, and analyzed by reversed-phase liquid chromatography at 242 nm with mobile phase consisting of 10% acetonitrile and 0.1% trifluoroacetic acid. Recovery of the HPLC analysis was 95.80% (${\pm}1.09$). All tested samples showed no domoic acid at the detection limit of 50 ng/g.
Keywords
domoic acid; amnesic shellfish poison; neurotoxin; Nitzschia pungens f. multiseries;
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