Development of flow technology for the purification and production of food sunflower phospholipids

Abstract

The completed research work is aimed at creating a continuous technology and machine-hardware purification scheme for phosphatide concentrate in an effective magneto-acoustic way. To separate modified of waste of deodorization and to obtain lecithins with a high content of phosphatidylcholines using distillation, selective solvent, ethyl alcohol and adsorbent-silica gel was used, and ultrasonic with an intensity of 10 W/cm2 in combination with a pulsating magnetic field of 2 Tl was used to increase its dissolving and absorbing ability. Such treatment in the stream provides obtaining a substantially bleached high-quality lecithin-containing product in the form of microgranules of an alcohol-insoluble fraction (remain on the filter) and a liquid fat-containing part with a low amount of waste absorbed by silica gel. The objectives of the study include studying the effect of hydrodynamic complex effects on the association and deassociation of free fatty acids and other related lipids in the composition of the waste of deodorization of sunflower oil, the rationale for the use of silica gel as an effective neutralizing and adsorbing agent, determining rational modes of the solvent (ethyl alcohol) distillation process in a vacuum molecular distiller for high-quality lecithin-containing liquid product. The relevance of the work «Improvement of the process and equipment for the distillation of waste of deodorization of vegetable oils processed in ultrasonic» is that at present in Russia this topic of the integrated use of ultrasonic, pulsating magnetic field and silica gel cleaning makes a significant novelty in Russian scientific works in this direction. The proposed technology for producing modified sunflower lecithins allows to obtain both fractionated lecithins with a mass fraction of acetone-insoluble substances of more than 60%, and skimmed, more hygrophilic lecithins with a mass fraction of acetone-insoluble substances up to 95% with an improved quality of cleaning from color and smelling substances at low acidity.

Determination of rational conditions for oil extraction from oil hydration waste

“…Under these conditions, the oil yield increased to 76.1 %, the mass fraction of moisture in the oil decreased to 18.6 %. According to the review of scientific studies [10][11][12][13][14][15][16], the main task of processing phosphatide concentrates is to obtain phosphatides. However, there are no data on the development and optimization of technologies for oil extraction from concentrates.…”

“…The work differs from the existing scientific research [10][11][12][13][14][15][16] by determining rational conditions for acid hydration of phosphatide concentrate with non-standard indicators (mass fraction of moisture and volatile substances, mass fraction of phosphatides, mass fraction of oil, mass fraction of substances insoluble in ethyl ether) in order to extract oil. This technology will allow efficient separation Phospholipids have a structure of esters, the molecules of which include residues of fatty acids, phosphoric acid and an additional group of atoms containing nitrogen.…”

“…In [15], a continuous technology for the purification of phosphatide concentrate by magnetoacoustic method for separating modified distillates of sunflower oil to obtain lecithins with a high content of phosphatidylcholines was developed. Distillation of a selective solvent, ethyl alcohol, and adsorption by silica gel were used in the work, and to increase their solubility and absorption capacity, ultrasound with an intensity of 10 W/m 2 was applied.…”