food grade propylene glycol alginate(PGA) powder 1) white/flaxen powder 2) Halal,ISO9001,ISO22000&KOSHER and GB10616-2004 Propylene Glycol Alginate/PGA1) white/flaxen powder2) Halal,ISO9001,ISO22000&KOSHER and GB10616-2004Propylene glycol alginate (abbreviated as PGA), is derived from alginic acid which is extracted from natural seaweed. It is in the form of white or flaxen powder. Aqueous ...