Abstract: The present invention concerns oxidative degradation of polysaccharides, and provides a composition, kit, and method for increasing the efficiency of recalcitrant cellulose degradation, using an auxiliary activity family 7 (AA7) enzymes and a polysaccharide monooxygenase enzyme (E.C. 1.14.99.-). Said AA7 enzyme comprises dehydrogenase activity (E.C. 1.1.1.-) and gluco-oligosaccharide oxidase activity (E.C. 1.1.3.-) and provides a novel “functionality” within a previously not described Glade of AA7 dehydrogenases.

Abstract: The use of UV-activated Copper Radical Oxidase (CRO) enzymes in the implementation of oxidation reactions. Also, a process for oxidizing organic compounds using enzymes which are activated by UV light. The process also leads to concomitant formation of hydrogen peroxide, that can optionally be used in hydrogen peroxide mediated processes. Further, the process relates to the oxidation of alcohols in aldehydes.

Abstract: Disclosed is a method for producing nanocelluloses from a cellulose substrate including cellulose fibers, the method including the following sequence of steps: —a step of enzymatic treatment of the cellulose substrate, by bringing same into contact with at least one cleaving enzyme, then—a step of mechanical treatment of the cellulose substrate subjected to the step of enzymatic treatment, in order to delaminate the cellulose fibres and obtain the nanocelluloses. The at least one cleaving enzyme is chosen from the enzymes belonging to the family of lytic polysaccharide monooxygenases (LPMOs) capable of achieving cleavage in the presence of an electron donor. Also disclosed are the nanocelluloses obtained according to the method.

Abstract: The invention relates to a polysaccaride-oxidizing composition comprising a polysaccaride-oxidizing enzyme wherein, when the said polysaccharide-oxidizing enzyme is compared to the reference polypeptide of SEQ ID NO. 1 as described in the specification by using the BLAST-P comparison method, (i) the said polysaccaride-oxidizing enzyme possesses an amino acid identify of 20% or more with the said reference polypeptide and (ii) the BLAST-P comparison method results in an E-value of 10 e?3 or less.

Abstract: Celluloses, notably nanocelluloses, and more particularly processes for manufacturing cellulose fibers and for defibrillating cellulose-based substrates. Most particularly, processes for defibrillating cellulose-based substrates and manufacturing celluloses, in particular nanocelluloses (NC), using a new family of fungal lytic polysaccharide monooxygenases (LPMOs).

Abstract: The invention relates to a polysaccharide-oxidizing composition comprising a polysaccharide-oxidizing enzyme wherein, when the said polysaccharide-oxidizing enzyme is compared to the reference polypeptide of SEQ ID NO. 1 as described in the specification by using the BLAST-P comparison method, (i) the said polysaccharide-oxidizing enzyme possesses an amino acid identity of 20% or more with the said reference polypeptide and (ii) the BLAST-P comparison method results in an E-value of 10 e?3 or less.

Abstract: Disclosed is a method for producing nanocelluloses from a cellulose substrate including cellulose fibers, the method including the following sequence of steps: a step of enzymatic treatment of the cellulose substrate, by bringing same into contact with at least one cleaving enzyme, then a step of mechanical treatment of the cellulose substrate subjected to the step of enzymatic treatment, in order to delaminate the cellulose fibres and obtain the nanocelluloses. The at least one cleaving enzyme is chosen from the enzymes belonging to the family of lytic polysaccharide monooxygenases (LPMOs) capable of achieving cleavage in the presence of an electron donor. Also disclosed are the nanocelluloses obtained according to the method.

Abstract: Enzyme compositions including at least a) a cocktail of cellulases from Trichoderma reesei, and b) an enzymatic cocktail from Pycnoporus cinnabarinus including a cellobiose dehydrogenase (CDH) or c) a recombinant cellobiose dehydrogenase (CDH) from Pycnoporus cinnabarinus, preferably also including a Family 61 glycoside hydrolase. Also, methods for degrading a lignocellulosic biomass, for producing a fermentation product, for producing gluconic acid, xylonic acid and/or xylobionic acid, for enhancing the production of gluconic acid, xylonic acid and/or xylobionic acid or for increasing the yield of sugars from a lignocellulosic biomass.

Abstract: A polypeptide which is a mutated mannanase, whose sequence is derived from a native mannanase of the filamentous ascomycete coprophile fungus Podospora anserina, and being characterised by an increased catalyst efficiency of at least 25%. Also, a polynucleotide encoding the polypeptide, a vector including the polynucleotide, a host cell including the vector or the polynucleotide, and a composition including the polypeptide, the polynucleotide, the vector or the host cell. Methods of using the polypeptide, the polynucleotide, the vector, the host cell or the composition of the invention for degradation of compounds including mannans, in particular lignocellulosic biomass, as well as various possible uses of the polypeptide, the polynucleotide, the vector, the host cell or the composition.

Abstract: The invention relates to a multi-enzymatic preparation containing the secretome of the CNCM I-4639 strain of Aspergillus japonicus. This secretome, which contains in particular cellulases and hemicellulases, can be used for the saccharification of lignocellulosic substrates, in particular in combination with the secretome of Trichoderma reesei.

Abstract: Enzyme compositions including at least a) a cocktail of cellulases from Trichoderma reesei, and b) an enzymatic cocktail from Pycnoporus cinnabarinus including a cellobiose dehydrogenase (CDH) or c) a recombinant cellobiose dehydrogenase (CDH) from Pycnoporus cinnabarinus, preferably also including a Family 61 glycoside hydrolase. Also, methods for degrading a lignocellulosic biomass, for producing a fermentation product, for producing gluconic acid, xylonic acid and/or xylobionic acid, for enhancing the production of gluconic acid, xylonic acid and/or xylobionic acid or for increasing the yield of sugars from a lignocellulosic biomass.