E407 – Carrageena
ThickenerDescription
Sulfated polysaccharide derived from red seaweed, used as a thickener, stabilizer, and gelling agent
Notes
Carrageenan is extracted directly from red seaweed, particularly species like Irish moss that grow in coastal waters around the world. To obtain it, the seaweed is cleaned, boiled in water, and then filtered to extract the carrageenan—which is essentially a type of natural fiber called a polysaccharide (a complex sugar molecule). The extracted substance is then dried and ground into a powder that's ready for use in food production. This seaweed extract works as both a thickener and gelling agent, meaning it can make liquids thicker or help them set into a gel-like consistency. You'll find carrageenan in many everyday products including chocolate milk, ice cream, yogurt, deli meats, and plant-based milk alternatives like almond or oat milk, where it helps create smooth, creamy textures and prevents ingredients from separating. Carrageenan is completely natural and suitable for vegetarians, vegans, and most religious dietary requirements since it comes entirely from seaweed. However, there has been some consumer debate about its safety, with some people choosing to avoid it due to concerns about digestive sensitivity, though food safety authorities continue to approve its use. It's particularly popular in vegan and vegetarian products as an alternative to animal-based thickeners like gelatin.