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Characterization of low molecular weight organic acids from beech wood treated in supercritical water

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Abstract

Japanese beech (Fagus crenata Blume), its cell wall components, and model compounds were treated by supercritical water (380°C, 100 MPa) for 5 s using a batch-type reactor to investigate the production behavior of low molecular weight organic acids. It was found that cellulose and hemicellulose were decomposed to formic acid, pyruvic acid, glycolic acid, acetic acid, and lactic acid, whereas lignin was barely decomposed to such organic acids under the given conditions. However, after prolonged treatment (380°C, 100 MPa, 4 min) of lignin, some organic acids were recovered owing perhaps to the decomposition of the propyl side chain of lignin. It was additionally revealed that the predominant organic acid recovered was acetic acid, which might be derived from the acetyl group of hemicellulose in Japanese beech.

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Authors and Affiliations

  1. Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, 422, Kyoto, Japan

    Kei Yoshida, Junko Kusaki, Katsunobu Ehara & Shiro Saka

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  1. Kei Yoshida
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  2. Junko Kusaki
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  3. Katsunobu Ehara
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  4. Shiro Saka
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Correspondence to Shiro Saka.

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Yoshida, K., Kusaki, J., Ehara, K. et al. Characterization of low molecular weight organic acids from beech wood treated in supercritical water. Appl Biochem Biotechnol 123, 795–806 (2005). https://doi.org/10.1385/ABAB:123:1-3:0795

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  • DOI: https://doi.org/10.1385/ABAB:123:1-3:0795

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