Volatile compounds recovered by solid-phase microextraction from fresh adductor muscle and total lipids of sea scallop (Placopecten magellanicus) from Georges Bank (Nova Scotia)

The volatile compounds of the adductor muscle of the sea scallop Placopecten magellanicus were recovered by solid-phase microextraction using both polydimethylsiloxane and polydimethylsiloxane/divinylbenzene-coated fibers. Gas chromatography/mass spectrometry revealed the presence of 34 compounds, including 7 long-chain alcohols, 6 aldehydes, and 6 ketones. Two sulfur-containing volatiles were also identified. Six aldehydes, 3 alkanes, and 3 alcohols were tentatively identified from the total lipid fraction. The profiles obtained with the 2 fibers was different because of polarity and polymer differences. The fatty-acid compositions of the total lipid and of the phospholipid class were determined. Phospholipids with 95% of the total lipid are potentially a source of fatty-acid oxidation products.