Propylene Glycol Alginate (PGA), scientifically identified by its CAS number 9005-37-2 and E number E405, is a fascinating derivative of alginic acid that has become a cornerstone ingredient in many food and beverage formulations. Understanding its chemical properties is key to unlocking its full potential in product development. As a dedicated chemical supplier, we provide high-quality PGA and technical insights to support our clients.

Chemically, PGA is an ester formed from alginic acid, a polysaccharide extracted from brown seaweed, and propylene glycol. The process involves esterifying some of the carboxyl groups of alginic acid with propylene glycol, while others may be neutralized or remain free. This esterification process significantly influences its solubility and functional characteristics. Typically appearing as a white to yellowish-white powder, PGA is hygroscopic and readily soluble in water, forming viscous colloidal solutions. Its stability is particularly noteworthy in acidic environments, making it an excellent choice for products like juices, yogurts, and salad dressings where pH is low.

The functional properties of PGA are diverse and highly beneficial. Its primary roles include acting as a thickener, stabilizer, and emulsifier. As a thickener, it increases the viscosity of liquid products, contributing to a desirable texture and mouthfeel. Its emulsifying properties help to blend immiscible liquids, such as oil and water, creating stable emulsions that prevent separation – critical for products like salad dressings and sauces. Furthermore, PGA acts as a stabilizer, preventing sedimentation and maintaining the uniform consistency of products over time. For manufacturers looking to buy food-grade PGA, ensuring these properties are consistently met is vital, which is where sourcing from a reputable supplier like us becomes crucial.

Beyond these core functions, PGA is also recognized for its ability to improve foam stability in certain beverages, such as beer, contributing to a richer head. Its natural origin and safety profile, often classified as GRAS (Generally Recognized As Safe), further enhance its appeal. When procuring this ingredient, whether for bulk use or specialized applications, understanding the specifications related to esterification degree, viscosity, and purity is important. Our commitment as a manufacturer and supplier is to provide PGA that meets these critical parameters, ensuring reliable performance in your food applications. We invite you to explore how our high-quality Propylene Glycol Alginate can enhance your product formulations.

By leveraging the scientific understanding of Propylene Glycol Alginate's properties, food technologists can create superior products. We are here to support your efforts with high-quality PGA and expert advice. Contact us today to discuss your specific needs and to inquire about purchasing our food-grade Propylene Glycol Alginate.