The fossil fuels are finite resources and their mass consumption has significant impacts on our environment and society. For these reasons, fatty acid methyl ester (FAME) is being used as an alternative diesel fuel produced by transesterification of triglyceride, a main component of plant oil, with methanol. Because FAME is renewable fuel containing no aromatics and sulfur, it can reduce exhaust emissions 1.21. However, FAME has some drawbacks caused by the difference in chemical structure from petroleum diesel, for example, corrosiveness against certain types of rubber and metal 13 and poor oxidation stability due to unsaturated double bonds l1-4]. To overcome such drawbacks, hydrocarbon productions from plant oils with the hydrotreating and catalytic cracking are being researched worldwide 15-19l.