Commonly known as lucilite, silica hydrogel specifically absorbs proteins and polypeptides from wort. The particles are added to beer during maturation or at filtration and can act in as little as 5 minutes to adsorb polypeptides with an isoelectric point between 3.0 and 5.0. As a result they are used in clarification and stabilisation, particularly when a long shelf life is required.

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