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Typical source

Brown seaweed

Plain-language explanation

E400, or alginic acid, is a natural carbohydrate polymer used as a thickening and gelling agent to improve the texture of foods. It is commercially extracted from the cell walls of various species of brown seaweed, making it a completely plant-based ingredient. Because it originates entirely from marine algae and involves no animal-derived processing aids or alcohol, it is universally considered halal by all major certification bodies, including JAKIM, MUI, MUIS, ESMA, and HFA. Muslim consumers can safely consume products containing this additive without any dietary concerns.