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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Fractionation of woody biomass with boiling aqueous acetic acid containing a small amount of mineral acid at atmospheric pressure: Reactivity of arylglycerol-β-aryl ethers in lignins with aqueous acetic acid containing H2SO4

Journal of Wood Science volume 44, pages 217–221 (1998)Cite this article

Abstract

To characterize the mechanism of the reaction of lignin with aqueous acetic acid (AW) containing a small amount of H2SO4, guaiacylglycerol-β-guaiacyl ether (GOG), and guaiacylglycerol-β-syringol ether (GOS) were refluxed in 90% AW with 0.28% H2SO4 for 0–120 min. Reaction products and their silylated derivatives were characterized by analytical methods such as gas chromatography-mass spectrometry and nuclear magnetic resonance. When the model compounds were allowed to react at boiling temperature for 0 min (heat-up time 30 min), most of their primary alcohol groups and some of their secondary alcohol groups were acetylated, but their phenolic groups were not. About 90% of GOG was degraded, polymerized, or both during boiling for at least 15 min, yielding guaiacol and isocoumaran compounds (GOG-e and GOG-f) in addition to homovanillin (II) as guaiacylvinyl alcohol (I) and other minor products. GOS yielded syringol, homovanillin (II), and a novel compound (V) together with unknown products but not the corresponding isocoumaran compounds.

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Author notes

  1. Shu Shimamoto

    Present address: Daicel Chemical Industries, 671-12, Himezi, Japan

  2. Makiko Enoki

    Present address: Wood Research Institute, Kyoto University, 611-0011, Uji, Japan

  3. Haruo Konno

    Present address: Iwakuni Research Laboratory of Technology, Nippon Paper Industries, 740-0003, Iwakuni, Japan

Authors and Affiliations

  1. Faculty of Agriculture, Hokkaido University, 060-0809, Sapporo, Japan

    Yoshihiro Sano, Shu Shimamoto, Makiko Enoki & Haruo Konno

Authors
  1. Yoshihiro Sano
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  2. Shu Shimamoto
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  3. Makiko Enoki
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  4. Haruo Konno
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Sano, Y., Shimamoto, S., Enoki, M. et al. Fractionation of woody biomass with boiling aqueous acetic acid containing a small amount of mineral acid at atmospheric pressure: Reactivity of arylglycerol-β-aryl ethers in lignins with aqueous acetic acid containing H2SO4 . J Wood Sci 44, 217–221 (1998). https://doi.org/10.1007/BF00521966

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  • DOI: https://doi.org/10.1007/BF00521966

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