NOVELTY - Processing lignocellulosic biomass, by providing soft lignocellulosic biomass feedstock, pre-treating the feedstock in a single-stage pressurized hydrothermal pretreatment to produce pretreated biomass slurry containing undissolved solids comprising xylan, and hydrolyzing the pre-treated biomass with or without addition of supplemental water content using enzymatic hydrolysis catalyzed by an enzyme mixture comprising endoglucanase, exoglucanase, beta -glucosidase, endoxylanase, and beta -xylosidase.    USE - The method is useful for processing lignocellulosic biomass which is used for producing whole slurry used as substrate for biomethane, and ethanol (all claimed) used as fuel.    ADVANTAGE - The method enables processing the lignocellulosic biomass in a single-stage pressurized hydrothermal pretreatment, and production of hydrolyzate containing high yield of 5C monomers up to 55% in a cost-effective, convenient and less complicated manner without requirement of any washing or other detoxification step. The method enables to reduce loss of 6C monomers from the hydrolyzate during the pretreatment process, and bioconversion of the biomass at a faster rate.    DETAILED DESCRIPTION - Method for processing lignocellulosic biomass, involves providing soft lignocellulosic biomass feedstock, pre-treating the feedstock at pH of 3.5-9 in a single-stage pressurized hydrothermal pretreatment to log severity (Ro) of 3.75 or less to produce pretreated biomass slurry containing undissolved solids comprising at least 5 wt.% xylan, and hydrolyzing the pre-treated biomass with or without addition of supplemental water content using enzymatic hydrolysis for at least 24 hours catalyzed by an enzyme mixture comprising endoglucanase, exoglucanase, beta -glucosidase, endoxylanase, and beta -xylosidase having activities of at least 1100 nkat/g, 280 nkat/g, 3000 nkat/g, 1400 nkat/g and 75 nkat/g respectively to produce hydrolyzate in which yield of 5C monomers is at least 55% with respect to original xylose and arabinose content of the feedstock before the pretreatment process.