Food additives Europe numbers: E910
Wax esters are not exactly food additives themselves, but rather a type of natural fat or oil found in various plants, animals, and even some insects [1]. However, due to their unique properties, they can be processed and used to create ingredients with functionalities valuable in certain food applications. Here's a breakdown of wax esters and their role in food:
Natural Occurrence:
- Widespread in Nature: Wax esters occur naturally in many organisms, providing a protective coating, waterproofing, or energy storage function [2]. For example, beeswax and the waxy coating on some fruits (like apples or grapes) contain wax esters.
Functionality in Food Processing:
While not directly added as an additive, wax esters can be processed and modified to create ingredients with specific functionalities in food:
- Fat Replacers: Due to their special structure, some processed wax esters can mimic the texture and mouthfeel of fats and oils. This can be useful for creating low-fat or reduced-fat versions of food products [3].
- Controlled Release Agents: Certain processed wax esters can be used to encapsulate flavors or other food components. These slowly release over time, potentially enhancing flavor profile or functionality [4].
- Coating Agents: In some cases, processed wax esters can be used as a coating material for food items. This can help prevent moisture loss, extend shelf life, or improve appearance [5].
Safety:
- Generally Considered Safe: Generally, wax esters derived from natural sources are considered safe for consumption when consumed at typical levels found in food [6]. However, highly processed or synthetic wax esters might require more specific safety evaluations.
Regulation:
- May Require Approval: The regulations regarding the use of processed wax esters in food can vary depending on the specific source and intended function. Some modifications might require approval from regulatory bodies like the US Food and Drug Administration (FDA) before use in food products [7].
Natural vs. Synthetic:
- Food Sources Preferred: When used as fat replacers or coating agents, wax esters derived from natural sources like plants or insects are generally preferred [8].
Overall:
Wax esters themselves are not directly added as food additives but can be a source material for processed ingredients that offer functionalities like fat replacement, controlled release, or coatings in various food applications. While generally considered safe from natural sources, the specific regulations and safety considerations can depend on the processing methods and intended use.