Premium
A fluorescence study of the ternary system lecithin‐sodium deoxycholate‐water showing structural transformations
Author(s) -
Antonov Peter A.,
Pancheva Rayna P.,
Naplatarova Maria D.,
Stoylov Stoyl P.
Publication year - 1985
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(85)81269-2
Subject(s) - fluorescence , inflection point , ternary operation , lecithin , chemistry , ternary numeral system , molar ratio , chromatography , rhodamine , rhodamine b , analytical chemistry (journal) , crystallography , organic chemistry , mathematics , geometry , physics , optics , photocatalysis , computer science , programming language , phase (matter) , catalysis
A fluorescence method was applied to study structural transitions occurring in the ternary system lecithinsodium deoxycholate‐water. The method is based on binding of the hydrophilic probe rhodamine‐B to the structures at molar ratios of lecithin and deoxycholate ( L/D ) ranging from 0.16 to 10.7. The relationship between the fluorescence intensity and L/D ratio was sharply altered at molar ratios of 0.9 and 4.5. Thus three L/D regions could be distinguished and inflection points were estimated for each one. It is suggested that the L/D values of the sharp transitions (0.9 and 4.5) and the inflection points (0.5, 1.5 and 5.5) indicate generation of new types of molecular arrangements in the ternary system.