Is glycerol ester of wood rosin vegan?

Glycerol ester of wood rosin is a food ingredient commonly used as an emulsifier and stabilizer in various beverages and food products. It is a yellow to amber-colored liquid derived from pine trees, particularly from the stumps and slash of the trees. The wood rosin is extracted and then esterified with glycerol to form a water-soluble substance. Glycerol ester of wood rosin has a mild pine-like flavor and is considered safe for consumption by regulatory agencies. It is often added to citrus-flavored drinks to keep the oils from separating and settling at the bottom of the container.