... ,beers,instant-foodPropylence glycol alginate(abbreviated as PGA),is derived from alginic acid which is extracted from natural seaweedProduct standardSpeclilationGB10616-2004Esterification degree ... ,%≤0.0002Heavy metals(As Pb),%≤0.002Lesd(Pb),%≤0.0005 emulsifiers propylene glycol alginate