Edible oil purification is a key process step in the food industry to ensure consistent product quality and extended shelf life. In addition to triglycerides, crude oils contain various impurities such as free fatty acids, phospholipids, colorants, and trace metals, which can negatively affect oxidation stability and lead to discoloration or undesirable flavors.
Processing is therefore carried out in several stages, including degumming, neutralization, bleaching, and deodorization. Adsorptive materials such as bleaching earths or activated carbon play a crucial role in this process by selectively removing colorants, oxidation products, turbidity, and other impurities. Bleaching earths are characterized by their high specific surface area and efficient adsorption of polar components; Tonsil CO 614 G is an acid-activated bleaching earth based on montmorillonite that is used in edible oil refining for the removal of colorants, turbidity, and metal compounds.
The combined application of physical and chemical purification processes results in high-purity edible oils with consistent quality that meet the stringent requirements of consumers and regulatory standards.
Tonsil® CO 614 G is a granulated, acid-activated montmorillonite (bleaching earth) characterized by a large specific surface area and good porosity; it effectively absorbs impurities
