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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. hdl.handle.net/10.1038/srep07492
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322, more
Peer reviewed article  

Available in Authors 

Keywords
    Fatty acids; Mass spectrometry; Micromesistius poutassou (Risso, 1827) [WoRMS]; Marine

Authors  Top 
  • Taleshi, M.S.
  • Raber, G.
  • Edmonds, J.S.
  • Jensen, K.B.
  • Francesconi, K.A.

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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