... from brown seaweed 4.free sample 5.integrity first Food Propylene glycol alginate (PGA) is a natural seaweed extract - an enzyme of ... forms. The conversion of alginate/alginic acid to its proylene glycol alginate (PGA) changes the behavior of the polymer in many ... dressing, emulsified essence, acidic protein drinks, cosmetic, condiments, etc. swelling Propylene Glycol Alginate