Food 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.
Applications:
1) In food industry, used as thickener, emulsifier and stabilizer.
2) PGA has good acid-proof property, can be used in conditions with pH at 3-5.
3) PGA has strong frothing and emulsifying ability. Widely used as a stabilizer for yoghurt, flavoring and beer foam.
4) 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.
food additive Propylene Glycol Alginate