Document Type

Article

Publication Date

12-2002

Journal or Book Title

Journal of the American Oil Chemists' Society

Volume

79

Issue

12

First Page

1187

Last Page

1190

DOI

10.1007/s11746-002-0625-0

Abstract

Forty-seven saturated synthetic diacyl PA, PC, PE, PG, and PS and five unsaturated diacyl phospholipids (PL) underwent normal- and reversed-phase (RP) HPLC with isocratic isopropanol/hexane/water (5∶4∶1) and methanol/chloroform/acetonitrile/water (79.5∶9∶8∶3.5) mobile phases, respectively. For normal-phase HPLC, capacity factors (k′ i ) decrease with chain length (n) of the two identical PL FA residues, whereas the opposite occurs with RP (C18)-HPLC. Plots of In k′ i vs. n for individual PL classes are in general curved, violating the linear free-energy relationship. For PL of the same n but with different head groups, k′ i with normal-phase HPLC varies as PEn≥16, when the order is PEk′ i values is PGn≥16, when it is PA≈PGk′ i values of PL with unsaturated FA of n=18 are ordered as PEk′ i .

Comments

This is a post-print of an article from Journal of the American Oil Chemists' Society, 79, no. 12 (2002): 1187–1190, doi: 10.1007/s11746-002-0625-0.

Copyright Owner

AOCS Press

Language

en

File Format

application/pdf

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