Propylene Glycol Alginate

PGA is used where a hydrocolloid has to survive an acidic environment. In beer and other sparkling beverages it is used for foam stability; in acidified dairy and soy protein drinks it stabilises protein against settling; in dressings, sauces and flavour emulsions it works as an emulsifier and thickener at low pH where unmodified alginates would be precipitated by acid or by calcium. The correct function and use level depend on the grade and on the formulation, and are established by trial rather than assumed from this page.

The degree of esterification and the viscosity type are the two decisions that matter most, because together they set whether the material behaves primarily as an emulsifier, primarily as a thickener, or as a foam and suspension stabiliser. State the pH of your system, whether calcium or protein is present, the process temperature and shear, and the shelf-life behaviour you need to hold.

These are two different commercial materials and are frequently confused. Propylene glycol is a small-molecule glycol used as a solvent, humectant and carrier, and it has its own canonical page on this catalogue. Propylene glycol alginate is a high-molecular-weight seaweed polysaccharide ester used for emulsification, foam stability and thickening. They are not interchangeable in a formulation and are never quoted as substitutes for one another. Sodium alginate, potassium alginate and alginic acid are also separate records: PGA is the esterified derivative, not an alginate salt.

This page asserts no viscosity, assay, purity, particle size, moisture, ash, degree of esterification, origin, packing, minimum quantity, certification, approval, availability or price. Every commercially meaningful value is taken from producer documentation for the exact grade offered and confirmed in writing before order.

Allzone sources seaweed-derived hydrocolloids through producer channels and quotes them per enquiry. Origin is selected against your technical requirement, quantity, documentation need and destination, and is stated in the offer rather than fixed by this page.

Technical data sheet, safety data sheet and certificate of analysis for the exact grade offered are requested from the producer and shared with the quotation. Where a declaration matters to your application — food contact, pharmaceutical or cosmetic use, allergen, kosher or halal — it is confirmed for that specific grade and intended use rather than assumed from this page.

Send the functional target, the application, the quantity, the destination and the documentation you need. Several hydrocolloids can be listed in one enquiry and reviewed together rather than split into separate requests.