Propylene glycol alginate (PGA)

Propylene glycol alginate (PGA) is a natural seaweed extract - an enzyme of alginate derivatives. It occurs as white to yellowish brown filamentous, grainy, granular or powdered forms. The conversion of alginate/alginic acid to its proylene glycol alginate (PGA) changes the behavior of the polymer in many ways compared to standard alginate. As compared to sodium alginates, it has reduced sensitivity to acid and calcium salts. It functions in acidic systems.


PGA has special functions in emulsifying, stabilizing, thickening and decentralizing, which allow it to be widely used in juice, beer, salad dressing, emulsified essence, acidic protein drinks, cosmetic, condiments, etc.


PGA is the most efficient and commonly used beer foam stablizer worldwide with its use well understood and documented. PGA beer foam stablizer has the highest level of esterification availabale on the market, giving superior head retention and greater protection against foam collapse caused by foam-negative contaminants.