|
|
vol. 7, nr. 1 (2006)
|
Spectral properties of propyl gallate in organic solvents and in eterogeneous environment
|
|
|
Krzysztof Dwiecki1, Paweł Górnaś1, Małgorzata Nogala-Kałucka2, Krzysztof Polewski1
|
|
| (get PDF )
|
|
|
1 Department of Physics, Agricultural University, ul. Wojska Polskiego 38/42, 60-637 Poznań |
|
|
2 Department of Biochemistry and Food Analysis, Agricultural University, ul. Mazowiecka 48, 60-623 Poznań |
|
|
vol. 7 (2006), nr. 1,
pp. 39-48
|
|
|
abstract:
The spectral properties of propyl gallate (PG) in water, organic solvents, micelles and lipid vesicles were investigated. In homogenous solvents the positions of fluorescence and absorption maxima of PG depend on the solvent nature. In protic solvents the emission maximum is red shifted and Stokes shift is higher compared to aprotic solvents. In sodium dodecyl sulphate, SDS, micelles partition of PG between bulk water and micellar phase was observed. In lipid vesicles the observed spectral shift and fluorescence quenching experiments with iodide and acrylamide suggest that PG is located in the hydrophilic part of the phospholipid bilayer where it may act as an aqueous phase antioxidant.
|
|
keywords:
antioxidant, micelle, lipid vesicle, absorption, fluorescence, DPPC, lecithin
|
|
original in:
Polish
|
|
|
|
|
|
