TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The dioxy compound is a compound of formula ((R1O)-A-(OR2)) (I), or a compound of formulae (IIa), (IIb), (IIc), (IId), (IIe) or (IIf) or their salt or solvate. The dioxy compound is pyrocatechol or catechol, caffeic acid, 3,4-dihydroxybenzoic acid, 4-tert-butyl-5-methoxy-1,2-benzenediol, pyrogallol, gallic acid, methyl-3,4,5-trihydroxybenzoate, 2,3,4-trihydroxybenzophenone, 2,6-dimethoxyphenol, sinapinic acid, 3,5-dihydroxybenzoic acid, 4-chloro-1,2-benzenediol, 4-nitro-1,2-benzenediol, tannic acid, ethyl gallate, methyl glycolate, dihydroxyfumaric acid, 2-butyne-1,4-diol, croconic acid, 1,3-propanediol, tartaric acid, 2,4-pentanediol, 3-ethyloxy-1,2-propanediol, 2,4,4'-trihydroxybenzophenone, cis-2-butene-1,4-diol, 3,4-dihydroxy-3-cyclobutene-1,2-dione, dihydroxyacetone, acrolein acetal, methyl-4-hydroxybenzoate, 4-hydroxybenzoic acid, methyl-3,5-dimethoxy-4-hydroxybenzoate or pyrocatechol violet. The composition further comprises (i) at least one enzyme comprising cellulase, hemicellulase, esterase, expansin, laccase, ligninolytic enzyme, pectinase, peroxidase, protease or swollenin. The enzyme composition comprises (i).Either R1, R2 = alkyl, alkenyl, alkynyl, (hetero)cycloalkyl, ((hetero)cycloalkyl-alkyl), (hetero)aryl or (hetero)aralkyl (all optionally substituted), H, -C(O)R5, -C(O)OR6 or -C(O)NHR7; orR1R2 = cyclic diether (optionally substituted);A = alkylene, alkenylene, alkynylene, (hetero)cycloalkylene or (hetero)arylene (all optionally substituted); eitherR3, R4 = alkyl, alkenyl, alkynyl, (hetero)cycloalkyl, ((hetero)cycloalkyl-alkyl), (hetero)aryl or (hetero)aralkyl (all optionally substituted), H, halo, -OR8, -NO2, -N(R9)(R10), -CN, -C(O)R5, -C(O)OR6, -C(O)NHR7, -OC(O)R11, -NHC(O)R12, -OC(O)OR13, -NHC(O)OR14, -OC(O)NHR15, -NHC(O)NHR16, -SO2R17, -SO2N(R18)(R19) or -SR20; orR3R4 = fused ring (optionally substituted);R5-R16, R18-R20 = alkyl, alkenyl, alkynyl, (hetero)cycloalkyl, ((hetero)cycloalkyl-alkyl), (hetero)aryl or (hetero)aralkyl (all optionally substituted) or H; andR17 = alkyl, alkenyl, alkynyl, (hetero)cycloalkyl, ((hetero)cycloalkyl-alkyl), (hetero)aryl or (hetero)aralkyl (all optionally substituted).Preferred Method: The method of degrading or converting a cellulosic material further comprises recovering the degraded cellulosic material. The fermenting of the cellulosic material produces a fermentation product. The method of fermenting the cellulosic material further comprises recovering the fermentation product from the fermentation. EXAMPLE - No suitable example given.