Aiken-

Much of the interior is cholesteryl esters of various types of lipids. Phospholipids on surface. We published some work on ldl/hdl oxidation in1997 See:

https://www.researchgate.net/publication/14373198_Identification_and_quantification_of_regioisomeric_cholesteryl_linoleate_hydroperoxides_in_oxidized_human_low_density_lipoprotein_and_high_density_lipoprotein?ev=prf_pub

for this work. Names/publications to look for in this area are Ned Porter, 2005, Lipid research, 46, 307-314. , http://www.jlr.org/content/46/2/307.full.pdf+html,

J. Am. Chem. Soc., 2000, 122 (33), pp 8042–8055 DOI: 10.1021/ja001180f

Roland Stocker, (bowery, stocker, J. Am. Chem. soc., 115, 6029, 1993). These may give you some leads and references in there may help.

Some of the older work of Stocker, R, Steinberg, D., and esterbauer, H are probably still relevant and are respectable works.

Jim

Article Identification and Quantification of the Regioisomeric Chole...