Table 2 Phase transition temperature of the different systems as determined from FTIR measurements (fitting uncertainty in brackets). ∆Tm was computed for each system in the presence of an alkaloid with respect to the same system in the absence of the alkaloid
Lipid composition | Alkaloid | Phase transition temperature (°C) | ∆Tm |
|---|---|---|---|
DMPC | / | 23.69 (±0.15) | |
DMPC | Gramine | 22.6 (±0.18) | −1.09 |
DMPC | Hordenine | 23.65 (±0.13) | −0.04 |
DMPG | / | 23.67 (±0.15) | |
DMPG | Gramine | 16.54 (±0.17) | −7.13 |
DMPG | Hordenine | 20.52 (±0.25) | −3.15 |
DMPC:DMPG (4:1) | / | 24.03 (±−0.21) | |
DMPC:DMPG (4:1) | Gramine | 20.17 (±0.21) | −3.86 |
DMPC:DMPG (4:1) | Hordenine | 22.81 (±0.17) | −1.22 |
