Sunday, May 3, 2009
3-31

Polysaccharide decomposition in hemp woody core induced by electron beam irradiation

Soo-Jeong Shin and Nam-Seok Cho. Wood and Paper Science, Chunbuk National University, College of Agriculture, Life and Environemental Science, Chunbuk National University, Cheongju, South Korea

The electron beam irradiation was applied as a pretreatment for the enzymatic saccharification of industrial hemp biomass  woody core with doses of 0 (control), 150, 300 and 450 kGy. The higher irradiation dose resulted in the more extraction with 0.5% sodium hydroxide solution extraction at room temperature. The electron beam irradiation induced chain scission in both polysaccharides and lignin. The higher solubility of treated samples came from xylan degradation induced by electron beam irradiation based on carbohydrate compositional analysis by 1H-NMR spectroscopic method. The changes in micro structure of hemp resulted in the better response to enzymatic hydrolysis with commercial cellulases (Celluclast 1.5L and Novozym 342). The higher improvement in enzymatic hydrolysis by the irradiation was found in the hydrolysis of the xylan than that of the cellulose in polysaccharides of hemp. 

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See more of The 31st Symposium on Biotechnology for Fuels and Chemicals (May 3-6, 2009)