Purple cabbage or red cabbage is from the same cabbage family. It is used both in cooking or in salads. It has many benefits, it is a great antioxidant. Its purple color is due to a pigment called anthocyanin. The purple cabbage is also rich in sulfur compounds, vitamin C, and citric acid, which enhances the beneficial action of vitamin C. Another good thing about purple cabbage is that it has a lot of fiber and this helps the digestive system.