E100 is a food colorant derived from natural sources, specifically from the turmeric plant. It is commonly used to impart a yellow hue to various food products, including mustard, cheese, and curries. E100 is recognized for its antioxidant properties and is considered safe for consumption. This colorant is often labeled as curcumin in ingredient lists. E100 is popular in both the food industry and home cooking due to its vibrant color and health benefits. It is also used in cosmetics and pharmaceuticals, showcasing its versatility beyond just food applications.