Ester Gum

ESTER GUM.
Glycerol ester of wood rosin, also known as glyceryl abietate or ester gum, is an oil-soluble food additive (E number E445).
DATE.
2014, 17,
June
maleic-glycerol-resin-1090329

The food-grade material is used in foods, beverages, and cosmetics to keep oils in suspension in water. It is also used as an ingredient in the production of chewing-gum and ice cream. Similar, less pure materials (glycerol ester of gum rosin) are used as a component of certain low-cost adhesives.
To make the glycerol ester of wood rosin, refined wood rosin is reacted with glycerin to produce the glycerol ester. This results in a fragrant, “warm” tasting, sweet substance (around 0.6 times that of cane sugar).

Glycerol ester of wood rosin is an alternative to brominated vegetable oil in citrus oil-flavored soft drinks. In some cases both ingredients are used together.

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