TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The salt is zinc chloride sesquihydrate, zinc chloride dihemihydrate or zinc chloride tetrahydrate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The pretreatment is a thermal, chemical, mechanical and/or enzymatic treatment. The step (a) is carried out under acidic conditions or no chemical reagents, where the pretreated filler is subjected before step (b) to a separation step to recover a solid fraction and a liquid fraction, at least a portion of the solid fraction is fed to the enzymatic hydrolysis of step (b) and at least a portion of the liquid fraction is recycled to the enzymatic hydrolysis of step (h). The pretreatment is carried out by steam explosion, with or without addition of acid. The cellulolytic and/or hemicellulolytic enzymes in step (b) are produced by the microorganism Trichoderma reesei. At least a portion of the hydrolyzate obtained in step (d) is recycled to the enzymatic hydrolysis step (h). The washing solution obtained in the step (f) is at least partially recycled to the enzymatic hydrolysis of step (j). The baking step (e) is carried out at a temperature of -20 degrees C to 250 degrees C. The step (e) is performed in the presence of one or more organic solvents comprising alcohols containing methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol or tert-butanol, diols and polyols including ethanediol, propanediol or glycerol, amino alcohols including ethanolamine, diethanolamine or triethanolamine, ketones including acetone or methyl ethyl ketone, carboxylic acids including formic acid or acetic acid, dimethylformamide, dimethylacetamide, dimethylsulfoxide, acetonitrile or aromatic solvents including benzene, toluene, xylenes or alkanes. The step (f) is carried out by precipitation by adding at least one anti-solvent which is a solvent or a mixture of the solvents comprising water, alcohols, diols and polyols, amino alcohols, ketones, carboxylic acids, esters including ethyl acetate or isopropyl acetate, dimethylformamide, dimethylacetamide, dimethylsulfoxide or acetonitrile. The step (g) comprises processing the solid fraction obtained in step (f) by one or more washing, neutralization, pressing and/or drying. At least a portion of the obtained liquid fraction of step (f) is sent to (i) a purification step, for concentrating the inorganic salt contained in the liquid and to obtain a liquid fraction containing concentrated inorganic salt and another liquid fraction depleted inorganic salt, where the liquid fraction containing concentrated inorganic salt is then at least partially recycled to the baking step (e). The step (g) of treatment of solid fraction obtained in step (f) is carried out by one or more washing to obtain a solid fraction and a liquid fraction, where the liquid fraction is at least partially sent to a purification step, and aggregating the inorganic salt contained in the liquid fraction and to obtain a liquid fraction containing concentrated inorganic salt and another liquid fraction depleted inorganic salt, where the liquid fraction containing concentrated inorganic salt is then at least partially recycled to the baking step (e). Preferred Definitions:    X = halide anion including Cl-, F-, Br-, I-, perchlorate anion, thiocyanate anion, nitrate anion, acetate anion, para-methylbenzene sulfonate anion, sulfate anion, oxalate anion or phosphate anion; and    M = Li, Fe, Zn or Al.    EXAMPLE - 612 g of Miscanthus substrate, pretreated by steam explosion (conditions comprising pressure of 15 bar, temperature of 197 degrees C) having a solids content of 36.5% was suspended in 3.11 l of water. The medium was stirred for 14 hours. 1 ml of a 2N Solution of potassium hydroxide with a pH of 5.1 was added. The reaction mixture was pressed to give 687.6 g of Miscanthus exploded neutralized steam as substrate. 36 g of Substrate was suspended in 80 ml of 0.05 M citrate/phosphate buffer. 6 ml of solution of 2.5 g/l of chloramphenicol was added. The pH was adjusted to 4.6 by addition of potassium hydroxide or phosphoric acid. After 14 hours stirring at 50 degrees C, solutions of cellulase (GC220) and beta -glucosidase (N188) were added. An additional amount of substrate was added in the reaction medium in the form of six additions of 25.6 g substrate after 15 minutes, 30 minutes, 45 minutes, 75 minutes, 120 minutes and 180 minutes. The reaction mixture was then stirred at 50 degrees C for 72 hours to glucose with a yield of 39%. The reaction medium was centrifuged at 9500 revolutions per minute to recover 179.5 g of wet solid. The solid was washed six times by resuspension in 330 ml of water, high agitation and centrifugation to obtain 136.3 g of solid having a solids content of 27.8%. The solid was subsequently referred to as enzymatic hydrolyzed residue. 8.52 g of Enzymatic hydrolyzed residue was mixed with 76 g of zinc chloride dihemihydrate and the reaction medium was heated at 80 degrees C for 2 hours. 320 ml of Water was added to the reaction medium of the squeezed enzymatic hydrolyzed residue and zinc chloride dihemihydrate to precipitate a solid, which was separated by centrifugation at 9500 revolutions per minute. The solid was washed twice by resuspension in 240 ml of water under vigorous stirring and centrifugation to obtain 26.4 g of solid material having a content of dry material of 12.8%. The solid was subsequently designated by reprocessed and washed enzymatic hydrolyzed residue. 5 ml of Solution of 0.1 M acetate buffer and 5 ml of solution of 1 wt.% sodium azide in water were added to 7.8 g of reprocessed and washed enzymatic hydrolyzed residue. The mass of the reaction medium was supplemented to 100 g by addition of water distilled. The mixture was heated with stirring at 50 degrees C for 14 hours and then the solutions cellulase (GC220) and ( beta -glucosidase) (N188) were added. The reaction medium was maintained at 50 degrees C under stirring at 400 revolutions per minute and samples were taken after 1 hour, 4 hours, 7 hours and 24 hours. The samples were placed in centrifuge tubes and placed for 10 minutes to an oil temperature of 103 degrees C to neutralize the enzyme activity. The glucose content in these samples was measured by enzymatic assay.