NOVELTY - Enzymatic digestion of oil palm waste involves eliminating lipids and water-soluble substances from feedstock by treatment with hot water followed by pressing out; reducing mechanical strength by elimination of residual lipids and partial destruction of supramolecular structures by shredding into particles 0.04-2 mm in size, treating with weak solution of enzymatic complex; eliminating most part of biogenic silicon by mechanical activation in impact-shear mode followed by extraction with hot water; followed by solid residue mechanical activation and enzymatic hydrolysis.    USE - For preparing oil palm waste to form used to form saccharides which are used for obtaining carbohydride solutions for their conversion to ethanol or other products of microbiological synthesis through saccharification and simultaneous co-fermentation (claimed).    ADVANTAGE - Improvement in efficiency of enzymatic hydrolysis is achieved at the cost of elimination of considerable part of biogenic silicon dioxide and polyphenols, and a stepped elevation of reaction ability of feedstock polysaccharides by alternation of mechanical activation and enzymatic treatment. Such preparation of the plant feedstock causes deterioration of the cellulose crystalline structure and elevation of specific surface of the material being treated, this provides most efficient utilization of mechanical energy.    DETAILED DESCRIPTION - Enzymatic digestion of oil palm waste to form used to form saccharides involves: elimination of more than 80% lipids and water-soluble substances from the feedstock by treatment of the feedstock with hot water followed by pressing out; reducing the feedstock mechanical strength by elimination of residual lipids and partial destruction of supramolecular structures at the cost of the feedstock shredding into particles 0.04-2 mm in size, treatment with weak solution of the enzymatic complex in the presence of surface-active substances; complete extraction of water-soluble components, elimination of the most part of biogenic silicon by mechanical activation in impact-shear mode followed by extraction with hot water; feedstock saccharification by alternation of the solid residue mechanical activation and enzymatic hydrolysis; where mechanical activation is carried out until the dependence is linear between activation time and yield of carbohydrides that is achieved with constant rate of hydrolysis.