Degumming is the process used to remove phosphatides (commonly referred to as gums) from crude oil during the refining process. Phosphatides are naturally occurring compounds that can adversely affect the quality and stability of oils. The degumming process involves treating the oil with water or an acid to hydrate the phosphatides, making them easier to separate from the oil through centrifugation. This step is crucial in ensuring the oil's purity and extending its shelf life.