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Arsenolipids in oil from blue whiting Micromesistius poutassou – evidence for arsenic-containing esters Taleshi, M.S.; Raber, G.; Edmonds, J.S.; Jensen, K.B.; Francesconi, K.A. (2014). Arsenolipids in oil from blue whiting Micromesistius poutassou – evidence for arsenic-containing esters. NPG Scientific Reports 4(7492): 7 pp. http://dx.doi.org/10.1038/srep07492 In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, meer

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VLIZ: Open access 267277 [ download pdf ]

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Trefwoorden

Acids > Organic compounds > Organic acids > Fatty acids Mass spectrometry Micromesistius poutassou (Risso, 1827) [WoRMS] Marien/Kust

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Taleshi, M.S. Raber, G., meer Edmonds, J.S.	Jensen, K.B. Francesconi, K.A.

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Abstract

Arsenic-containing lipids in the oil from the blue whiting fish (Micromesistius poutassou) were separated into three broad polarity groups and investigated by HPLC and mass spectrometry. A total of 11 arsenolipids including 4 new compounds were identified. The polar lipid fraction constituting 24% of the total arsenolipid content (which totalled 2.16 µg As/g) contained four known dimethylarsinoyl fatty acids and three known dimethylarsinoyl hydrocarbons. The less polar fraction (ca 30% of the total arsenolipids) contained four new dimethylarsinoyl hydrocarbons with chain lengths 22–30 carbons, in addition to more complex arsenicals that hydrolysed to known dimethylarsinoyl fatty acids suggesting they were conjugated carboxylic acids, presumably esters. The rest of the lipid-soluble arsenic (ca 45% of the total) remained in the non-polar fraction together with the bulk of the fish oil lipids, a complex mixture of compounds that precluded identification of the small amounts of arsenolipids.

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