What is Rapeseed Oil, Hydrogenated?
Rapeseed oil, hydrogenated (CAS Number: 84681-71-0) is a processed form of rapeseed oil that has undergone hydrogenation, a chemical process that adds hydrogen atoms to unsaturated fats. This process converts liquid oil into a semi-solid or solid fat with improved stability and functionality in food applications. The hydrogenation process reduces the level of unsaturated fats, making the oil more resistant to oxidation and rancidity.
Common Uses
Rapeseed oil, hydrogenated functions primarily as an emulsifier, stabilizer, and texturizer in food manufacturing. Emulsifiers help blend incompatible ingredients such as oil and water, creating smooth, uniform products. This additive is commonly found in:
- Margarines and butter substitutes
- Baked goods and pastries
- Confectionery products
- Dairy-like desserts and cream products
- Processed cheese products
- Salad dressings and sauces
Its stabilizing properties help maintain product consistency during storage and transportation, while its texturizing capabilities improve mouthfeel and overall product quality.
Safety Assessment
Rapeseed oil, hydrogenated has not been formally affirmed as GRAS (Generally Recognized As Safe) by the FDA, though it is permitted for use in food under 21 CFR § 184.1555 as a food additive. The FDA maintains zero recorded adverse events associated with this ingredient and zero product recalls linked to its use.
The safety profile relates to hydrogenated oils generally. While hydrogenation improves stability, it can create trans fats as a byproduct. However, modern hydrogenation processes are more controlled than historical methods. The oil itself is derived from rapeseed (canola), a widely consumed food source with a long history of safe use.
Toxicological studies on hydrogenated vegetable oils have not identified specific safety concerns at levels used in food applications. The additive is metabolized similarly to other dietary fats when consumed.
Regulatory Status
Rapeseed oil, hydrogenated is approved for use as a food additive in the United States under FDA regulations. It is listed in the FDA's food additive database as permitted for direct addition to food.
In the European Union, hydrogenated rapeseed oil is subject to different labeling requirements and regulatory scrutiny related to trans fat content. Regulations increasingly require disclosure of trans fat levels in products containing hydrogenated oils.
The additive is also approved in Canada, Australia, and many other countries where food safety standards are established.
Key Studies
Research on hydrogenated oils has focused on:
- **Emulsification efficacy**: Studies demonstrate the effectiveness of hydrogenated rapeseed oil in creating stable emulsions in margarine and baked goods compared to other emulsifiers.
- **Oxidative stability**: Research confirms that hydrogenation significantly extends shelf life by reducing oxidative degradation.
- **Composition analysis**: Studies analyzing the fatty acid profile of hydrogenated rapeseed oil show predictable composition when produced under controlled conditions.
The European Food Safety Authority (EFSA) has evaluated hydrogenated vegetable oils and determined them safe for use as food additives when trans fat levels are controlled through modern processing techniques.
No significant long-term human studies have specifically isolated rapeseed oil, hydrogenated as a variable, as such additive safety is typically assessed within the broader category of hydrogenated fats and oils.