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Table 1 Effects of composition on the lipid melting behavior.

From: Thermotropic phase behavior and headgroup interactions of the nonbilayer lipids phosphatidylethanolamine and monogalactosyldiacylglycerol in the dry state

Sample composition

Tm (°C) (FTIR)

Tm (°C)

(DSC)

Thex (°C)

(DSC)

ΔH Tm

(kJ/mol)

ΔH Thex

(kJ/mol)

100% EPE

-3.4

-14.9

100.4

10.30

3.79

50% EPE/50% EPC

0.0

-14.0

 

16.67

 

50% EPE/50% DMPC

47.5

53.0

 

32.03

 

100% EPC

39.6

22.0

 

27.20

 

100% DMPC

84.3

97.6

 

23.20

 

100% MGDG

  

84.7

 

0.96

50% MGDG/50% EPC

-9.0

    

50% MGDG/50% DMPC

44.5

27.6/43.6

 

36.70

 
  1. Values for phase transition temperatures (Tm) were either determined by FTIR (Fig. 1) or DSC (Fig. 2). Bilayer to hexagonal phase transition temperatures (Thex) and transition enthalpies (ΔH) were determined by DSC.