Open AccessResearch of surface-active properties of post-alcohol grain distillery dreg
Author(s) -
Н. Ш. Кайшева,
А. Ш. Кайшев,
H. N. Gyulbyakova,
E. A. Maslovskaja,
В. Карпенко
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/640/5/052013
Subject(s) - surface tension , adsorption , viscosity , chemistry , chromatography , critical micelle concentration , chemical engineering , alcohol , materials science , micelle , organic chemistry , thermodynamics , composite material , aqueous solution , engineering , physics
The concentration of low-molecular pectins (6.67 mol/m3) in the liquid phase of wheat post-alcohol grain distillery dreg is relatively high. That is why the aim of the work was to study the surface-active properties of distillery dreg by the method of the highest pressure of air bubbles to assess the possibility of its use in pharmacy as an auxiliary aid. Also, the prospects for using distillery dreg as a pharmaceutical raw material are due to the rich composition of biologically active substances, multi-tonnage production, and affordability. According to a series of solutions of the liquid phase, distillery dreg with a concentration of pectins of 0.06÷6.67 mol/m3 were determined and calculated indicators at a temperature of 293 K: surface tension (58.89•10-3-72, 75•10-3 N/m), surface activity (11.67), surface excess (1.28•10-5 mol/m2), maximal surface excess (1.28•10-5 mol/m2), critical micelle concentration (1.32 mol/m3 or 0.22%). Sequentially Gibbs equation and graphical method (using the surface tension and Langmuir adsorption isotherms) were used in the experiment. According to these characteristics, distillery dreg is comparable to known tension-active polysaccharide (sodium alginate, polygalacturonic acid). They are used in drug technology as substances that increase the viscosity, which is used to stabilize liquid and soft dosage forms: emulsions, ointments, suppository bases and suspensions, and, consequently, changes in the rate of release and absorption of drugs, improving the conduct of technological processes.