Propylene Glycol Alginate Propylene Glycol Alginate Propylene Glycol Alginate Propylene Glycol Alginate Propylene Glycol Alginate

Propylene Glycol Alginate

  • Product Name: PGA,Propylene Glycol Alginate
  • CAS No: 9005-37-2
  • Application: propylene glycol alginate (PGA) as beer foam stabiliser
  • Packing: 25Kg/Drum
  • Manufacturer: Lifelong Chemical Co., Ltd
  • Product Details

LIFELONG CHEMICAL is a professional PGA supplier, factory and manufacturer since 1995.

If you plan to buy food grade Propylene Glycol Alginate, please feel free to contact us at

We always put quality at the first place and offer the best price, As a leading China PGA manufacturers, we look forward to cooperating with you.

Please feel free to contact us for more detailed information on PGA.

Propylene Glycol Alginate

Type: Thickeners

CAS No.: 9005-37-2

E Number: E405

Other Names: Propylene glycol ester of alginic acid   ,Propane-1,2-diol alginate ,Hydroxypropyl alginate

Molecular Formula: (C9H14O7)n

Molecular Weight:10 000 -600 000

Propylene glycol alginate, PGA or propane-1,2-diol alginate, is an ester made from alginic acid (E400) and propylene glycol (E1520).Propylene glycol alginate (PGA) is an emulsifier, stabilizer, and thickener used in food products, such asyogurt,ice cream,salad dressings, beer, milk products, and also inflour, noodles and instant foodstuff, as well as in ketchup, meat sauce, soy sauce, emulsifying essence, syrup and icing as modifier.. The European food additive numberis E405.OurPropylene Glycol Alginate is safe,vegan, halal, kosher and gluten-free.

Propylene Glycol Alginate Functions:

As a food additive, alginic acid and its salt have unique colloidal properties and thickening, stability, emulsification, suspension, film-forming and gel forming ability. Compared with alginic acid, its derivative PGA, It also has many advantages and unique applications in the food industry.

In the production of propylene glycol alginate, because some of the hydroxyl groups in the molecular structure of alginic acid are esterified by propylene glycol, PGA can be dissolved in water to form a viscous colloid, and it can also be dissolved in organic acid solutions. Gel can be formed in the solution, but no precipitation will occur. PGA has strong salt resistance, does not salt out even in concentrated electrolyte solutions, and is very stable to metal ions such as calcium and sodium. PGA can improve the stability of alginic acid in food.

In addition to the thickening and stabilizing effects of general water-soluble colloids, propylene glycol alginate also has the following characteristics:

1. Emulsification: In the esterification reaction, the carboxylic acid groups of the raw material alginic acid are partly esterified and partly neutralized by the alkali in the catalyst, so that the molecular structure has both hydrophilic and lipophilic groups, which has a good Emulsifying.

2. Acid resistance: The propylene glycol alginate product itself is a slightly acidic product, and its 1% solution has a pH of 3 to 4, so it has strong acid resistance and can be effectively used in low pH values such as lactic acid beverages and fruit juice beverages. The range of food and beverages.

3. Fragrance retention: The molecular structure of PGA enables it to be combined with most spices, effectively preventing the loss of flavor. It is often used as a preservative for food flavors.

4. Foam stability: Propylene glycol alginate has good foaming and emulsifying ability. It is widely used in beer foam stabilizer to increase beer foaming performance and make the foam delicate and lasting.

5. Hydration and anti-aging: It is suitable for instant foods, noodles and other pasta products. It can improve the rheological properties of the dough and prevent the low-temperature aging of the pasta.

6. Water retention and tissue improvement: It is suitable for baked goods such as bread and cakes, and can increase the specific volume, elasticity and water retention of the finished product.

7. Synergistic effect of other PGA colloids: PGA has good mutual solubility with sodium carboxymethyl cellulose, modified starch, gum arabic, pectin, peach gum, etc., and can be mixed and compounded for use.

PGA Propylene glycol alginate specifications:







Particle size


Viscosity (mpa. s) (1% solution)

LV <150

MV: 150 - 400

HV: >400

Esterification Degree (%)

> 85

Loss on drying (%)

< 15

PH value


Insoluble ash-content (%)

< 1.0

As (mg/kg)

< 2

Lead (mg/kg)

< 5

Mercury (mg/kg)

< 1

Cadmium (mg/kg)

< 1

Total plate count (cfu/g)

< 5000

Yeast & mould (cfu/g)

< 500


Negative in 5g


Negative in 10g

Hot Tags: PGA, PGA for beer stabilizer, beer stabilizer,propylene glycol alginate beer,propylene glycol alginate CAS NO. 9005-37-2,propylene glycol alginate E405,alginic acid ester propylene glycol alginate,propylene glycol alginate food grade,propylene glycol alginate for food

Inquiry Us
If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!
If you have any problem when using the website or our products, please write down your comments or suggestions, we will answer your questions as soon as possible!Thank you for your attention!