A raman spectroscopic study of the interactions of 13 GHz microwave irradiation with dipalmitoylphosphatidylcholine dispersions |
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Authors: | D Yova E Liarokapis |
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Institution: | (1) Department of Physics, National Technical University, Zografou Campus, GR 15773, Greece |
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Abstract: | Summary In order to clarify the effect of 13 GHz microwave irradiation upon model membranes, vibrational Raman spectroscopy was performed
for multilamellar dispersions of dipalmitoylphosphatidylcholine, before and after irradiation. Raman spectra of the phospholipid
dispersions were recorded for the C−H ((2800⊢3100)cm−1) and the C−C ((1050⊢1150)cm−1) stretching modes, above the transition temperatureT
m of the phospholipid, before and after microwave irradiation. An intensity comparison between the irradiated and nonirradiated
sample revealed an increase in the intensity ratioI
2930/I
2880 and a small perturbation in the C−C stretching region, induced by microwaves. It seems reasonable to assume that microwave
irradiation brings about a change in lateral chain-chain interactions, which is possibly due to induced changes at bilayer
curvature. |
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Keywords: | Biooptics (effects of microwaves light laser radiation and other nonionizing electromagnetic waves |
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