TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Components: The source of cellulose is waste cellulose, or biomass. The cellulases include mixture of enzymes. The enzymes are recovered from cellulose hydrolysates.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solution mixture comprises undissolved swollen portion. The ionic liquid of formula (I) including 1-n-butyl-3-methylimidazolium chloride, 1-allyl-3-methyl imidazolium chloride, or 3-methyl-N-butylpyridinium chloride is molten at - 10 degrees C to 160 degrees C and comprises cations or anions. The ionic liquid is any ionic liquid that dissolves cellulose represented by cation structure including imidazolium, pyrrolidinium, pyridinium, phosphonium, or ammonium. The anti-solvent is water, alcohol or acetonitrile or any solvent which displaces dissolved cellulose from liquid (I). The sugars are simple sugars or soluble oligomers, and cellobiose. The cellulose is native cellulose including crystalline or partially crystalline.R1-R3=H, 1-10C alkyl, or 2-10C alkenyl (alkyl may be substituted with sulfone, sulfoxide, thioether, ether, amide, or amine); andA=halide including chloride, fluoride, bromide or iodide, acetate, trifluoroacetate, dicyanamide, carboxylate or other anions.Preferred Method: The preparation method includes separating cellulose precipitate from anti-solvent prior to addition of cellulases. The liquid (I) is recovered from anti-solvent through distillation, membrane separation, solid phase extraction, and liquid-liquid extraction. The mixture of enzymes includes endo-gluconases, exo-glucanases, and beta -glucosidases, where enzyme mixture can be modified or simplified from conventional cellulase systems to achieve hydrolysis of liquid (I)-treated cellulose. The improved hydrolysis rate allows saccharification with low enzyme loadings. The solution is subjected to either heating with agitation or microwave irradiation with intermittent agitation during incubation. EXAMPLE - No suitable example given.