Patent ID: 8795393

Claim:
A method of preparing bio fuel from algal galactan, the method comprising: obtaining galactan, wherein the galactan has been extracted as a polysaccharide from marine algae, further wherein the galactan comprises agar; and carrying out reaction for preparing bio fuel comprising at least one of 5-hydroxymethyl-2-furfural (HMF) and 5-alkoxymethyl-2-furfural (AMF) represented by the following chemical formula I where, R 1 is one of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl and aryl groups through a catalyst conversion reaction using the galactan by adding the galactan into a solvent together with at least one of an organic acid catalyst, an inorganic acid catalyst, a solid acid catalyst, or a metal catalyst, wherein a ratio of the galactan to the solvent ranges from 0.5 q/L to 50 g/L.