Arsenosugar phospholipids and arsenic hydrocarbons in two species of brown macroalgae
Sara García-Salgado A , Georg Raber B D , Reingard Raml C , Christoph Magnes C and Kevin A. Francesconi BA School of Civil Engineering, Department of Hydraulic and Energy Technology, University College for the Technical Engineering of Public Works, Polytechnic University of Madrid, E-28014 Madrid, Spain.
B Institute of Chemistry – Analytical Chemistry, Karl-Franzens University Graz, A-8010 Graz, Austria.
C HEALTH – Institute for Biomedicine and Health Sciences, Joanneum Research, A-8036 Graz, Austria.
D Corresponding author. Email: georg.raber@uni-graz.at
Environmental Chemistry 9(1) 63-66 https://doi.org/10.1071/EN11164
Submitted: 20 December 2011 Accepted: 17 January 2012 Published: 14 February 2012
Journal Compilation © CSIRO Publishing JYEAR Open Access CC BY-NC-ND
Environmental context. Although organoarsenic compounds occur in marine organisms at high concentrations, the origin and role of these compounds is unknown. Arsenic-containing lipids (arsenolipids) are newly discovered compounds in fish. We identify a range of arsenolipids in algae and propose that algae are the origin of these unusual arsenic compounds in marine ecosystems.
Abstract. Fourteen arsenolipids, including 11 new compounds, were identified and quantified in two species of brown algae, Wakame (Undaria pinnatifida) and Hijiki (Hizikia fusiformis), by high resolution mass spectrometry, high performance liquid chromatography–mass spectrometry and gas chromatography–mass spectrometry. Both algal species contained arsenosugar-phospholipids as the major type of arsenolipid, and arsenic-hydrocarbons were also significant components, particularly in Hijiki. The origin of the various arsenolipids, and the possible significance of their relative quantities, is briefly discussed.
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