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. 2009 Dec;50(12):2412–2420. doi: 10.1194/jlr.M800662-JLR200

Fig. 7.

Fig. 7.

CACI-MS/MS of C18:2n-6 (A) and C18:3n-3 (B) FAME from milk fat of ewes fed a diet supplemented with 12% linseed in dry matter. A reveals characteristic diagnostic ions at m/z 192 and 278 (precursor ion m/z = 348). B reveals characteristic diagnostic ions at m/z 148 and 276. Values associated with the FAME structure represent fragmentation with and without (1-methylenimino)-1-ethenylium adduct. Values ± 14 m/z units from the diagnostic ions represent alternative fragmentation patterns about the double bonds and are characteristic for identifying diagnostic ions.