S. Akyuz et Jed. Davies, TEMPERATURE-DEPENDENT FTIR SPECTROSCOPIC STUDY OF THE INTERACTION OF ALPHA-TOCOPHEROL AND ALPHA-TOCOPHERYL ACETATE WITH PHOSPHOLIPID-BILAYERS, Journal of molecular structure, 415(1-2), 1997, pp. 65-70
FTIR spectroscopy has been employed in order to investigate alpha-toco
pherol (alpha-T) and alpha-tocopheryl acetate (alpha-TA) induced effec
ts on the molecular organization of dimyristoyl-L-alpha-phosphatidylch
oline (DMPC) bilayers, at various temperatures and concentrations. It
was concluded that alpha-T interacts much more strongly than alpha-TA,
indicating that alpha-T has a more polar location in the membrane tha
n alpha-TA. The observed changes in the carbonyl and phosphate group v
ibrational modes of DMPC on addition of alpha-T or alpha-TA are discus
sed. (C) 1997 Elsevier Science B.V.