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propylene glycol alginate (PGA) as beer foam stabiliser in brewery industry
Profoam is a powder form of propylene glycol alginate produced by the esterification of alginic acid. It is designed to give a trouble free method of enhancing and protecting beer foam.
Profoam stabilises beer foam in two ways. Firstly by actively interacting with foam positive, hydrophobic beer polypeptides, and secondly by reducing the impact of foam negative factors. This latter effect explains the positive role Profoam also plays in protecting beer foam from external contamination, particularly from grease and detergents.
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