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

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