EXTRACTION AND ELECTROPHORETIC DETERMINATION OF VANILLIN IN AQUEOUS SOLUTIONS AND ENERGY DRINKS WITH POLYMERS BASED ON N-VINILFORMAMIDE

Abstract

The problem of development of new ways of extraction of vanillin from aqueous mediums of various genesis for the analysis and determination of an anolyte under production of foodstuff and energy drinks was actualized. Two-phase water systems on the basis of water-soluble polymers most fully satisfy requirements for extractive systems. Regularities of interphase distribution of vanillin in a water-salt extraction systems on the basis of poly-N-vinylformamide and N-vinilformamide copolymer with N-vinylimidazole are established. The rate of formation of the two-phase system "water-soluble polymer - water-salt solution of vanillin" is significantly influenced by the molecular mass of the extractant: with increasing intrinsic viscosity, the amount of polymer necessary to form a heterogeneous system in the presence of a salting out agent decreases. Influence of ratio of water and organic phases on effectiveness of extraction of vanillin, including in the presence of a caffeine is studied. Effectiveness of use of extraction systems on the basis of the synthesized copolymers for extraction and elektroforetic determination of vanillin and caffeine is established. During the research some conditions of electrophoretic detecting of vanillin and caffeine were optimized: structure of a buffered solution, type and the concentration of a mitsello adjustable influence the dividing ability of a buffered solution. Distribution coefficients and extent of extraction of vanillin are calculated. Schemes of formation of associates in systems vanillin-polymer are offered. The maximal values of extraction characteristics of vanillin in systems with copolymer are lower, than at extraction in systems with poly-N - vinylformamide. It was established that introduction to system of a component with bonds of N-vinylimidazole leads to formation of intramolecular bonds between OH - groups of N-vinylimidazole and "pyridinic" N-atoms of an imidazolny cycle. The way of electrophoretic selection determination of vanillin and caffeine in energy drinks with preliminary extraction of target components with the use of polymers is developed. Forcitation:Mokshina N.Ya., Pakhomova O.A., Shatalov G.V., Lavlinskaya M.S. Extraction and electrophoretic determination of vanillin in aqueous solutions and energy drinks with polymers based on N-vinilformamide. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 8. P. 13-19.