NOVELTY - Converting (M1) lignocellulosic material to a soluble hydrolyzable sugars and recalcitrant cellulose involves: enzymatically treating a lignocellulosic material with a composition comprising at least one enzyme to produce a product comprising hydrolyzed sugars and recalcitrant cellulose; and partitioning the product such that a hydrolyzed sugar fraction and a recalcitrant cellulose fraction is obtained.    USE - For converting lignocellulosic material to a soluble hydrolyzable sugars and recalcitrant cellulose (claimed), e.g. sugars, biofuel, micro- and/or nano-fibrillated cellulose.    ADVANTAGE - The method produces nanocellulose with morphologies of having a less entangled and slightly branched fibril network, and having the same thermal stability as of that of the initial lignocellulose feedstock. The method minimizes saccharification. The hydrolyzed sugars are easily converted to biofuel (e.g. ethanol) through yeast fermentation with an efficiency of 91%. The method provides an integrated process for the simultaneous production of fermentable sugars (e.g. for biofuel or chemical production) and nano-cellulose (a potentially valuable biobased nanomaterial for commercial applications) from plant biomass. The integrated process uses an environmentally friendly enzyme treatment of cellulosic/lignocellulosic material to hydrolyze amorphous cellulose and hemicelluloses to sugars that can be converted to biofuels, and to produce recalcitrant crystalline cellulose for further chemical and/or mechanical processing to produce nano-fibrillated cellulose. The method reduces the cost of producing biofuels by avoiding the need for complete cellulose saccharification, thus reducing reaction times or avoiding the use of harsh conditions typically needed to achieve maximum hydrolysis of cellulose. The enzyme pretreatment also reduces the amount of energy necessary for mechanical processing recalcitrant cellulose to produce nano-fibrillated cellulose. The method demonstrates the feasibility of integrating the productions of biofuel and nano-fibrillated cellulose from lignocellulosic material (e.g. wood fibers, pretreated plant biomass substrates).    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a composition comprising nano-fibrillated cellulose produced by the method (M1), where the nano-fibrillated cellulose has morphology that is less entangled and has a slightly branched fibril network.