Filtration in hydrophobic media: 1. Evidence of molecular selection by crossflow filtration of butter oil

The oils and fats industry needs well-identified fractions with well-defined physical properties for its final formulated products. In view of future applications, a triglyceride partition phenomenon of butter oil on a hydrophobic membrane is investigated by crossflow filtration. Triglycerides are separated into four groups according to their molecular weight and unsaturation index, leading to behavior that can be interpreted in terms of consistent stereochemical parameters.