Structural description

The L-arabinose-rich polysaccharides are named arabinans. So called polymers have a main structure of α(1-5)-linked L-arabinofuranose units, substituted at either O-2 or O-3 or at both of these positions.

Arabinans are side chains of the complex rhamnogalacturonan I found in the hemicellulosic part of dicotyledonous cell walls also called pectins.

Arabinans can also be found as a minor component of the mycobacterial cell walls. In this peculiar case, arabinan glycosidic linkages are α(1-3), α(1-5) and β(1-2) and branched the microbial galactan.

Activities and Uses

Arabinans were found to be immunobiological active compounds (F. Dourado et al., 2004. Carbohydrate Research 339; 2555–2566) and have hypoglycemic properties. Used as Prebiotic/dietary fibers.


Arabinan polysaccharides (Apple) - 100 mg

Arabinan polysaccharides (Apple) - 100 mg

Linear Arabinan polysaccharide extracted and purified from apple pomace. The polysaccharide is an α(1-5) linked L-arabinose homopolymer.
Arabinose content (HPAEC)>99%