Propylene glycol ester of alginic acid (E405), a cream-coloured powder used as a thickener, stabiliser and emulsifier that is stable in acidic conditions.
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Propylene glycol alginate (PGA) is a hydrocolloid made by esterifying alginic acid, derived from brown seaweed, with propylene glycol. It is a white to light-brown powder that hydrates in water to form viscous solutions and remains stable at low pH.
Its main uses are:
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