title: Spontaneous electrical potential oscillation on a filter impregnated with soybean lecithin placed between identical solutions of alanine.
abstract: Filters impregnated with soybean lecithin, placed between two identical aqueous alanine solutions, display spontaneous electric potential oscillations. Alanine solutions used in a large concentration range from 1 mM to 1 M produce damped oscillatory behaviour with an exponential decay in time. The dependence of decay time on concentration shows saturation behaviour which is well fitted with a sigmoidal curve. Power spectra obtained by Fourier transform show peaks specific for each concentration. When fitted with a Lorentzian curve in the peak domain, the centre of the peak height and width at half height could be extracted. All these parameters depend on alanine concentration in a saturating pattern.
authors.affiliation: University of Bucharest, Faculty of Biology, Romania. cucu@bio.bio.unibuc.ro
authors.forename: D
authors.initials: D
authors.lastname: Cucu
authors.forename: D
authors.initials: D
authors.lastname: Mihăilescu
mesh_terms: D000409:Alanine / Q000737:chemistry*; D000465:Algorithms; D000596:Amino Acids / Q000737:chemistry; D004563:Electrochemistry; D005374:Filtration; D005583:Fourier Analysis; D010713:Phosphatidylcholines / Q000737:chemistry*; D013025:Glycine max / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D010713:Phosphatidylcholines; D000409:Alanine