Sobre Agar

Agar is a natural polysaccharide derived from certain species of red seaweed, primarily from the genera Gelidium and Gracilaria. It does not have a single chemical formula, as it is a mixture of agarose and agaropectin, both complex carbohydrates. Agar is typically supplied as a white to off-white powder, flakes, or strips, and is insoluble in cold water but dissolves when heated, forming a strong gel upon cooling. Its unique gelling properties set it apart from other hydrocolloids.

Agar is produced by extracting the polysaccharides from harvested seaweed, followed by purification, drying, and milling. Due to its plant-based origin, stability, and strong gel strength, agar is widely used across food and beverage, microbiology, pharmaceuticals, biotechnology, and cosmetics. It is valued for its neutral taste, clarity, and ability to form firm gels at low concentrations.

Agar Uses

Food and Beverage Applications

Agar is commonly used in food manufacturing as a gelling, thickening, and stabilising agent. It is found in confectionery, desserts, jellies, bakery fillings, sauces, and dairy alternatives. As a vegetarian and vegan alternative to gelatine, agar is especially popular in plant-based and clean-label food formulations.

Microbiology and Laboratory Media

In laboratories, agar is an essential component of culture media used for microbiological and cell culture applications. Its ability to remain solid at incubation temperatures while resisting microbial degradation makes it ideal for growing bacteria, fungi, and other microorganisms in research, clinical, and educational settings.

Pharmaceutical Applications

Agar is used in pharmaceutical formulations as a suspending agent, stabiliser, and laxative ingredient. It supports controlled release and consistency in oral dosage forms and is also used in capsule and tablet production where natural excipients are preferred.

Cosmetics and Personal Care

In cosmetics and personal care products, agar functions as a natural thickener and texture modifier. It is used in creams, gels, masks, and lotions to improve viscosity, stability, and skin feel. Its gentle, plant-derived profile makes it suitable for natural and sensitive-skin formulations.

Biotechnology and Industrial Applications

Agar is also used in biotechnology, fermentation processes, and specialised industrial applications requiring stable gel matrices. Its thermal reversibility and clarity support precision processes in analytical testing and bioengineering.

Agar Supplier Australia, USA & More!

Redox are trusted, authorised suppliers of Agar. With distribution centres worldwide, we can supply to Australia, USA, UK, NZ, Europe, Asia and more. Get in touch with our expert team, who can help you order the right product, form and amount for your needs.