Switchgrass is a wild-perennial plant in North America, and rich in cellulose, making it attractive as a source for cellulosic ethanol. Especially, ethanol which is made from switchgrass produce more 540% energy better than the others. The objectives of this study were to examine the concentrations of phenolic compounds, monosaccharides and disaccharides which detected in some different part (upper, center, lower) of 34 species of switchgrasses. The total average of phenolic compound concentration was 4017.48 ㎍/g. Whereas it's concentration in the upper part was shown the highest (6669.09㎍/g) and the lower part was the lowest (1916.30㎍/g). The No.23 has the highest concentration of phenolic compounds but No.20 have the lowest concentration. In saccharides analysis, only arabinose and glucose are detected. The total average of monosaccharides and disaccharides concentration was 206284.75 ㎍/g. Whereas its concentration in the upper part was shown the highest (269738.18㎍/g) and the lower part was the lowest (167567.53㎍/g). The No.30 has the highest concentration of saccharides but No.2 have the lowest concentration. The obtained results shows that switchgrass are good sources of bio-ethanol and the upper part is the best among them.

• Eun-young Kang(Department of applied life science of konkuk university)
• Su-hyun Seo(Department of applied life science of konkuk university)
• Eun-hye Kim(Department of applied life science of konkuk university)
• Jae-woo Kim(Department of applied life science of konkuk university)
• Tae-sic Gwak(Department of applied life science of konkuk university)
• Gee-suck Eu(Department of crop production and technology of chonbuk university)
• Song-joong Yun(Department of crop production and technology of chonbuk university)
• Joung-kuk Ahn(Department of applied life science of konkuk university)
• Ill-min Chung(Department of applied life science of konkuk university) Corresponding Author