DETECTION OF NEW 7-0-ACYL DERIVATIVES OF DIARRHETIC SHELLFISH POISONING TOXINS BY LIQUID-CHROMATOGRAPHY MASS-SPECTROMETRY
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MARR, JC
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NATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADANATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADA
MARR, JC
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HU, T
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NATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADANATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADA
HU, T
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PLEASANCE, S
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NATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADANATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADA
PLEASANCE, S
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QUILLIAM, MA
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NATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADANATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADA
QUILLIAM, MA
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WRIGHT, JLC
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NATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADANATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADA
WRIGHT, JLC
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机构:
[1] NATL RES COUNCIL CANADA,ATLANTIC REG LAB,INST MARINE BIOSCI,HALIFAX B3H 3Z1,NS,CANADA
A novel method for the detection of acylated diarrhetic shellfish poisoning toxins is reported. Direct determination of these compounds is possible using high performance liquid chromatography coupled with ion-spray mass spectrometry. An extract, purified from the digestive glands of toxic mussels (Mytilus edulis) contaminated with okadaic acid, dinophysistoxin-1, and a recently reported analog, dinophysistoxin-2, was also shown to contain small amounts of dinophysistoxin-3, a mixture of 7-O-acyl ester derivatives of dinophysistoxin-1. In addition, acyl ester derivatives of okadaic acid and dinophysistoxin-2 were also detected by direct LC-MS analysis and confirmed by analysis of their hydrolysis products. This is the first report of the detection of other naturally occurring 7-O-acyl esters similar to dinophysistoxin-3.