Glycerol Esters of Wood Rosins (E445)
Type of additive (Glossary) | Emulsifiers |
E Number | E445 |
Also Known As | Glycerol ester of rosin Glyceryl abietate Ester gum Resin acids and rosin acids |

Purpose and Function
Glycerol esters of wood rosins are food additives used primarily as emulsifiers:
- Emulsifier: They stabilize emulsions in food products, preventing separation and ensuring a uniform texture in sauces, dressings, and beverages.
- Flavor Retention: Glycerol esters help retain flavors in food formulations, enhancing the overall sensory experience.
- Thickening Agent: These esters can also serve as thickening agents, improving the viscosity and mouthfeel of various products.
- Preservative Qualities: They may help enhance the shelf life of food products by stabilizing emulsions and preventing spoilage.
Potential Risks and Side Effects
Glycerol esters of wood rosins are generally regarded as safe for consumption. However, some considerations include:
- Gastrointestinal Issues: Excessive intake may lead to gastrointestinal discomfort, including bloating or gas, particularly for those sensitive to emulsifiers.
- Allergic Reactions: Rarely, individuals may experience allergic reactions to glycerol esters, especially those sensitive to wood products.
- Contaminants: Sourcing from reputable suppliers is essential to minimize the risk of contaminants in food formulations.