NOVELTY - Method comprises size reducing a starting lignocellulosic biomass to form a lignocellulosic biomass having a particle size less than 500 mu m, forming a mixture comprising water, and contacting water at a temperature of at least 374 degrees C and a pressure of at least 221 bar with the mixture for a duration sufficient to produce at least one 5-6C-saccharide, where the mixture is substantially free of exogenous acid.    USE - The method is useful for processing lignocellulosic biomass (claimed), which is useful as feedstock such as agricultural residues (including corn Stover, sugarcane bagasse, rice hulls and oat hulls), dedicated energy crops, wood residues (including sawmill and paper mill discards), and municipal waste for preparation of: fuels (such as gasoline, jet fuel and butanol); chemicals (such as acetic acid, acetic anhydride, acetone, acrylic acid, adipic acid, benzene, ethanol, ethylene, ethylene glycol, ethylene oxide, methanol, polypropylene, terephthalic acid, toluene, xylene, 1,3-propanediol and 1,4-butanediol); pharmaceuticals and foods (such as acetoin, alanine, arabitol, ascorbic acid, aspartic acid, citric acid, coumaric acid, fumaric acid, glycerol, glycine, kojic acid, lactic acid, lysine, malonic acid, proline, propionic acid, serine, sorbitol, succinic acid, threonine, xylitol, sugar acids (glucaric acid, gluconic acid and xylonic acids)); other chemicals (such as acontic acid, glutamic acid, malic acid and oxalic acid); textile applications (such as formic acid); and industrial intermediates (acetaldehyde, 3-hydroxypropionic acid, 2,5-furan dicarboxylic acid, furfural, glutaric acid, itaconic acid and levulinic acid) using including single-stage supercritical hydrolysis, acid hydrolysis, enzymatic hydrolysis, fermentative, catalytic, and non-catalytic (e.g. thermal decomposition) processes.    ADVANTAGE - The method produces lignocellulosic biomass at one-step without lack of sufficient acid functionalities, thus reducing time, energy consumption and cost of the process.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a composition produced by the above method, comprising either 0.1-4 wt.% of C5 monosaccharide, 0.1-4 wt.% of C5 oligosaccharide, 0.1-8 wt.% of C6 monosaccharide, and 0.1-8 wt.% of C6 oligosaccharide, or 0.1-4 wt.% of C5 monosaccharide and 0.1-8 wt.% of C6 oligosaccharide and 0.1-8 wt.% of C6 oligosaccharide.