Agar vs gelatin: what changes when you switch to a plant-based gelling agent

Agar sets faster, holds its shape at higher temperatures and comes from seaweed. Here is what to consider when replacing gelatin.

More and more food producers are replacing gelatin with plant-based alternatives. Agar, a natural hydrocolloid extracted from red seaweed, is one of the most effective options. But the two ingredients behave differently, and a successful switch starts from understanding those differences.

Origin

Gelatin is obtained from animal collagen. Agar is extracted from red seaweed, which makes it suitable for vegetarian and vegan products.

Gelling and melting

Agar dissolves in boiling water and forms firm gels on cooling, typically setting at 32–43 °C and melting only at 85–95 °C. Gelatin gels melt close to body temperature. This wide gap between setting and melting gives agar gels high thermal stability.

Dosage and texture

Agar forms gels at low concentrations. Its texture is firmer and shorter than gelatin; combining agar with other hydrocolloids or adjusting the grade helps achieve more elastic textures.

Processing

Standard agar needs to reach boiling temperature to dissolve. Pre-activated agar dissolves at 80 °C, for example during pasteurization, simplifying the switch on existing lines.

Where to start

Every recipe is different. Our technologists can help you select the right grade and dosage for your product. Request a sample.