Estiation of the thermal sffect of sunflower oil phosphatide concentrate degreasing process with isopropyl alcohol on the inactivation of phospholipid

Abstract

The characteristic absorption bands in the IR spectra of sunflower oil phospholipids were studied under various temperature regimes of degreasing. The most active chemical centers in the phospholipid molecule are ethylene bonds (isolated and conjugated), amino groups, phosphate groups, methylene groups, especially in the α-position to the double bond, and hydroxyl groups. The activity of P-O-groups and NH-groups increases at temperatures close to 800C. The above information confirmed that the degreasing of the phosphatide concentrate in the temperature range of 50–700C does not inactivate phospholipids. However, the degreasing rate of the phosphatide concentrate in this range already become high.