Isolation of hemicelluloses from sugarcane bagasse at different temperatures: Structure and properties

► Seven alkali-soluble hemicelluloses were obtained with KOH from 20 to 50 °C. ► Samples were mainly composed of xylose and small amounts of other sugar components. ► Higher temperatures (30-50 °C) yielded hemicelluloses with higher molecular weights. ► Structure of hemicelluloses was proposed via multiple spectroscopy.