Glycerol Ester of Gum Rosin (GEGR), also known as Glyceryl Rosinate or Ester Gum, is an oil-soluble food additive made by esterifying rosin with edible glycerol.
Due to its high density, GEGR helps keep oils suspended in water, making it a popular choice as a beverage stabilizer. It is widely used as a base ingredient in the production of chewing gum and also serves as a common alternative to brominated vegetable oil in citrus-flavored soft drinks. In some cases, both ingredients are used together to achieve the desired effect.
FDA-approved (172.735), GEGR is a key component in maintaining stability in food and beverage formulations, especially in oil-based products.