NMR and rheological study of Aloe barbadensis partially acetylated glucomannan

► Aloe extract (AE) and polysaccharidic fraction (PF) of Aloe leaves pulp were studied. ► PF is mainly constituted by a partially acetylated 4-linked β-d-glucomannan. ► Acetyl groups are located at C-2, C-2 and C-3, C-3 and/or C-6 of Manp units. ► AE is composed by a high amount of free glucose (61%) and the acetylated glucomannan. ► AE and PF showed pseudoplastic behavior and PF higher viscoelastic properties.