arabinogalaktan

Arabinogalatan (more commonly spelled arabinogalactan) is a heteropolysaccharide that occurs naturally in the cell walls of many plants, particularly in algae and some seed fibers. It is composed primarily of arabinose and galactose sugars linked in a branched structure, with the backbone typically comprised of β-(1→3)-linked galactopyranose units and side chains of α-(1→5)-linked arabinofuranose residues. This unique arrangement gives arabinogalactan its characteristic gelling and water‑binding properties.

The compound has been studied for a range of biomedical and industrial applications. In pharmaceuticals, arabinogalactan is investigated as an immune‑modulating agent, with some studies suggesting it can enhance lymphocyte activity and increase the efficacy of vaccines. It is also used as a dietary supplement, where it is touted for its potential benefits in gut health and cholesterol reduction. In the cosmetic industry, arabinogalactan is employed as a moisturizer and film former because of its capacity to retain moisture and form protective layers on skin and hair.

Industrially, arabinogalactan finds use as a stabilizer, thickener, and emulsifying agent in food products, cosmetics, and various polymer blends. Its biodegradable nature and non‑toxic profile make it attractive for environmentally friendly product formulations. Extraction typically involves aqueous or alkali treatments of plant material, followed by precipitation with alcohol. Advances in enzymatic treatments and fermentation techniques have improved yields and purity, allowing for larger scale production.