The Identified and Qualified Molecular Species in Breast Milk (Foremilk and Hindmilk) with a Lipidome Analysis by Liquid Chromatography-tandem Mass Spectrometry

<p>The identified and qualified molecular species.</p> <p>・ The separation by a underbar［_］ is show that it is notknown sn-position of the fatty acids.</p> <p>・ If the fatty acid composition is not known, the sum offatty acid is shown as number of carbons : number ofdouble bonds.</p> <p>・ Bond types other than ester bonds are indicated asfollows in rear of the sn-1 fatty acid or the sum of fatty acid:</p> <p>　・［e］ means O-alkyl-bond</p> <p>　・［p］ means O-alk-1-enyl-bond（plasmalogens）</p> <p>　・ In this analysis［, e］ and［p］ cannot be distinguished.</p> <p>・ The sphingoid backbone is annotated by the number of hydroxyl groups in the sphingoid base（［d］ means di）and separated by a slash［/］ from the number of carbons : number of double bonds of the N-linked fatty acid.</p> <p>・ If the sphingoid base or the N-linked fatty acid is not known, the sum of sphingoid base and fatty acid is shown as number of carbons : number of double bonds.</p>