Water-soluble and lipid-soluble arsenic compounds in japanese flying squid Todarodes pacificus.
Water-soluble and lipid-soluble arsenic compounds in Japanese flying squid Todarodes pacificus were analyzed. Regardless of the tissues, the major water-soluble arsenic compound was identified as arsenobetaine by LC/ESI-MS analysis, as reported for a number of marine animals. Lipid-soluble arsenic compounds were found at relatively high levels in liver and testis. LC/ESI-MS analysis of water-soluble arsenic compounds released from liver phospholipids by either chemical hydrolysis or phospholipase D hydrolysis demonstrated that the major arsenolipids are dimethylarsinic acid (DMA)-containing glycerophospholipid (phosphatidyldimethylarsinic acid) and DMA-containing sphingomyelin where the choline moiety of sphingomyelin is replaced by DMA. This is the first work to report the presence of DMA-containing phospholipids in marine invertebrates.
Ninh
Tran Dang
TD
Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan.
Nagashima
Yuji
Y
Shiomi
Kazuo
K
D000818:Animals; D001152:Arsenicals / Q000032:analysis* / Q000737:chemistry*; D002853:Chromatography, Liquid; D049832:Decapodiformes / Q000737:chemistry*; D008055:Lipids; D008099:Liver / Q000737:chemistry; D012995:Solubility; D021241:Spectrometry, Mass, Electrospray Ionization; D014867:Water
D001152:Arsenicals; D008055:Lipids; D014867:Water