NOVELTY - Fabricating (M1) 2-36C linear or branched hydrocarbons or oxygenated hydrocarbons, comprises: (a) performing endothermic gasification reaction with reactant stream comprising compounds including polysaccharides, monosaccharides and/or polyols to yield synthesis gas; (b) performing exothermic Fischer-Tropsch reaction with synthesis gas at temperature greater than or equal to temperature of gasification reaction performed in step (a), where the reaction produces 2-36C hydrocarbons or oxygenated hydrocarbons and heat; and (c) integrating heat with endothermic gasification reaction of step (a).    USE - The methods are useful for fabricating 2-36C linear or branched hydrocarbons or oxygenated hydrocarbons.    ADVANTAGE - The methods: eliminate the inhibiting effect of carbon monoxide partial pressure on the rate of the gasification reaction by consuming the carbon monoxide in the same reactor, thus providing an energy efficient route for producing fuels and chemicals from renewable biomass resources and from glycerol; eliminate the need for an oxygen-blown auto-thermal reformer or a bio-mass gasifier, thus are cost effective; reduce the size of the Fischer-Tropsch synthesis reactor by producing an undiluted synthesis gas stream and by eliminating subsequent cleaning steps required for production of synthesis gas from bio-mass gasification; and improves the economics of green Fischer-Tropsch synthesis by reducing the costs associated with synthesis gas production.    DETAILED DESCRIPTION - Fabricating (M1) 2-36C linear or branched hydrocarbons or oxygenated hydrocarbons, comprises: (a) performing an endothermic gasification reaction with a reactant stream comprising compounds including polysaccharides, monosaccharides and/or polyols, at less than or equal to 625 K, to yield synthesis gas; (b) performing an exothermic Fischer-Tropsch reaction with the synthesis gas of step (a) at a temperature greater than or equal to the temperature of the gasification reaction performed in step (a), where the reaction produces 2-36C hydrocarbons or oxygenated hydrocarbons, and heat; and (c) integrating the heat generated from the Fischer-Tropsch reaction of step (b) with the endothermic gasification reaction of step (a). An INDEPENDENT CLAIM is also included for fabricating (M2) 2-36C linear or branched hydrocarbons or oxygenated hydrocarbons comprising: (a1) performing an endothermic gasification reaction with a reactant stream comprising glycerol, at less than or equal to 625 K, using a catalyst comprising a group VIIIB metal, to yield synthesis gas; and the steps (b) and (c) as above per se.