NOVELTY - Method (A) (10) for producing low oxygen biomass-derived pyrolysis oil from carbonaceous biomass feedstock, comprises: producing hydrogen gas (18) in presence of reforming catalyst from hemicellulose-containing carbonaceous biomass feedstock; pyrolyzing (20) the feedstock in presence of pyrolysis upgrading catalyst to produce char and pyrolysis gases comprising oxygenated hydrocarbons and steam; deoxygenating (22) a residual portion of the oxygenated hydrocarbons with hydrogen gas; and condensing (24) a condensable portion of the pyrolysis gases into low oxygen biomass-derived pyrolysis oil.    USE - The method is useful for producing low oxygen biomass-derived pyrolysis oil (claimed) used as a biofuel.    ADVANTAGE - The method: provides low oxygen biomass-derived pyrolysis oil having substantially improved energy density, lower corrosivity, and higher thermal stability; and potentially eliminates or substantially reduces the need for secondary upgrading of the oils.    DETAILED DESCRIPTION - Method (A) (10) for producing low oxygen biomass-derived pyrolysis oil from carbonaceous biomass feedstock, comprises: producing hydrogen gas (18) in the presence of a low temperature reforming catalyst from hemicellulose extracted from hemicellulose-containing carbonaceous biomass feedstock; pyrolyzing (20) carbonaceous biomass feedstock in the presence of a pyrolysis upgrading catalyst to produce char and pyrolysis gases comprising oxygenated hydrocarbons and steam and to convert a portion of the oxygenated hydrocarbons into hydrocarbons; deoxygenating (22) a residual portion of the oxygenated hydrocarbons of the pyrolysis gases with the hydrogen gas and optionally, additional hydrogen gas; and condensing (24) a condensable portion of the pyrolysis gases into low oxygen biomass-derived pyrolysis oil. INDEPENDENT CLAIMS are also included for:    (1) a method (B) for producing low oxygen biomass-derived pyrolysis oil from hemicellulose-containing carbonaceous biomass feedstock, comprising: extracting hemicellulose from carbonaceous biomass feedstock to produce hemicellulose-depleted carbonaceous biomass feedstock and a hemicellulose extract; treating the hemicellulose extract in the presence of a low temperature reforming catalyst to produce hydrogen gas; introducing the hemicellulose-depleted carbonaceous biomass feedstock into a pyrolysis reactor maintained at pyrolysis temperatures in the presence of a pyrolysis upgrading catalyst to produce char and pyrolysis gases comprising oxygenated hydrocarbons, methane, and steam; supplying the hydrogen gas to the pyrolysis reactor to deoxygenate at least a portion of the oxygenated hydrocarbons into hydrocarbons and to form water; and condensing a condensable portion of the pyrolysis gases into low oxygen biomass-derived pyrolysis oil;    (2) a method (C) for reducing an oxygen level in condensable pyrolysis gases comprising oxygenated hydrocarbons and steam to produce low oxygen biomass-derived pyrolysis oil, comprising: producing hydrogen gas from hemicellulose, and optionally producing additional hydrogen from steam reforming light oxygenated hydrocarbons, in the presence of a low temperature reforming catalyst; deoxygenating at least a portion of the oxygenated hydrocarbons in the condensable pyrolysis gases in the presence of a pyrolysis upgrading catalyst with the hydrogen gas and optionally, the additional hydrogen gas; and condensing the condensable pyrolysis gases into low oxygen biomass-derived pyrolysis oil.    DESCRIPTION OF DRAWING(S) - The figure shows a flow chart of a method for producing low oxygen biomass-derived pyrolysis oils.    Method for producing low oxygen biomass-derived pyrolysis oil (10)    Producing hydrogen gas (18)    Pyrolyzing (20)    Deoxygenating (22)    Condensing (24)