Propylene Glycol Alginate (PGA)

What is Propylene Glycol Alginate (PGA)

Propylene glycol alginate (PGA) is an emulsifier, stabilizer, and thickener used in food products. It is a food additive with E numberE405. Chemically, propylene glycol alginate is an ester of alginic acid, which is derived from kelp. Some of the carboxyl groups are esterified with propylene glycol, some are neutralized with an appropriate alkali, and some remain free.

 

Propylene Glycol Alginate (PGA)

Propylene Glycol Alginate (PGA)

Category Thickeners, Stabilizers
E Number E405
CAS No. 9005-37-2
H.S. Code 1302390000
Origin China
MOQ 100kg
Payment Term /
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You will enjoy all grades and forms of PGA products, including:

  • PROPYLENE GLYCOL ALGINATE(PGA)

1. Food Applications

Propylene Glycol Alginate Applications

Propylene glycol alginate (PGA) is produced from alginic acid extracted from natural seaweed. It appears as a white or pale yellow powder, and its aqueous solution forms a viscous colloid. Superior to regular alginates in acid and salt tolerance, PGA is a high-performance seaweed-derived food additive.

2. Food Applications

Acid Milk Beverages & Yogurt:

Prevents protein precipitation, whey separation, and graininess in low-pH or fermented dairy drinks.

Salad Dressings:

Functions as an emulsion stabilizer (often paired with xanthan gum) to keep oil and vinegar/water from separating while giving a smooth pour.

Ice Cream & Milkshakes::

Acts as a smooth texturizer and stabilizer to improve mouthfeel and prevent large ice crystal growth.

Soups & Gravies:

Thickens and stabilizes texture across hot and cold storage conditions

Drinks & Beverages:

Keeps pulp and flavors evenly dispersed without settling or acid-induced clumping.

3. Non-Food Applications

Medical & Cosmetic Uses
  • Wound Dressings & Face Masks: Blended with materials like chitosan to create high-absorbency hydrogels that trap moisture and protect skin or healing tissue