Bamboo (Dendrocalamus giganteus Munro) culm was treated with hot water at varied temperatures (140, 160, 180 and 200o C) and reaction times (10, 30, 60 and 120 min) in a batch reactor at a liquid-to-solid ratio of 10. The influence of reaction conditions on the yields, components and characteristics of the liquid and solid fractions after the hydrothermal process was evaluated. The maximum yield of xylooligosaccharides of 47.49% was achieved at 180o C for 30 min with a relatively low level of xylose (4.73%) and other products (arabinose 0.20 g/L, galactose 0.19 g/L, HMF 0.15 g/L, furfural 0.36 g/L, acetic acid 0.64 g/L and formic acid 0.26 g/L) in the liquid. Nearly all hemicelluloses in the raw material were removed and the solid recovery was 65.15% at 200� C for 120 min. Lingin was partially removed and relocated on the surface of the solid under intense treatment conditions. The enzymatic hydrolysis of cellulose to glucose increased from 15.7% for the raw material to a maximum of 75.7% for the sample treated at 200� C for 120 min.

Evaluation of the hydrothermal process on bamboo (<i>Dendrocalamus giganteus </i>Munro) culm

247th National Meeting (2014)

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Evaluation of the hydrothermal process on bamboo (Dendrocalamus giganteus Munro) culm