PROCESS FOR PRODUCING POLYSACCHARIDE FROM COFFEE BEAN OR/AND COFFEE EXTRACTION RESIDUE

摘要

A process for efficiently producing a polysaccharide from coffee beans or/and a coffee extraction residue. Use of these has not received attention because of difficulty in decomposing these. The process, which is for producing a polysaccharide from coffee beans or/and a coffee extraction residue, comprises: a step (a) in which the coffee beans or/and coffee extraction residue are reduced to particles having a diameter of 10.0 µm to 5.0 mm; a step (b1) in which after the step (a), the particles are heated at 50-100°C in the presence of a dilute alkali; a step (c1) in which after completion of the step (b1), cellulase is caused to act thereon; a step (b2) in which after the step (c1), a heat treatment is conducted at 120°C or higher in the presence of a dilute alkali; and a step (c2) in which after the step (b2), cellulase is caused to act thereon.