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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Chemical structural elucidation of total lignins in woods I: fractionation of the lignin in residual wood meal after extraction of milled wood lignin

Journal of Wood Science volume 48, pages 46–50 (2002)Cite this article

Abstract

Residual wood meal after extraction of milled wood lignin (WMEM) ofEucalyptus globulus was extracted with alkali and LiCl/N,N-Dimethylacetamide (DMAc). These agents dissolve mainly hemicellulose and cellulose, respectively. The extractability of WMEM in alkali solutions was influenced by the degree of swelling of the cellulose. Under good swelling conditions, considerable amounts of cellulose and lignin were extracted with the hemicellulose. Maximum extractability was about 60% of the WMEM under optimum conditions (3 M or 5 M LiOH or 3M NaOH solution). Some portion of cellulose was extracted with LiCl/DMAc at room temperature. Thus, lignin inE. globulus WMEM was divided into three fractions: hemicellulose-lignin fraction, cellulose-lignin fraction, and insoluble-lignin fraction.

References

  1. Koshijima T (1990) Isolation of lignin. In: Nakano J (ed) Chemistry of lignin — basic and application (in Japanese). Uni Press, Tokyo, pp 41–42

    Google Scholar 

  2. Watanabe R, Azuma J, Koshijima T (1987) A convenient method for preparing lignin-carbohydrate complex fromPinus densiflora wood. Mokuzai Gakkaishi 33:793–803

    Google Scholar 

  3. Bjorkman A (1956) Studies on finely divided wood. Part I. Extraction of lignin with neutral solvents. Svensk Papperstidn 59:477–485

    CAS  Google Scholar 

  4. Turbek AF, El-Kafrawy A, Snyder FW, Auerbach AB (1981) Solvent system for cellulose. US patent 4,302,252

  5. Dence CW (1992) Derermination of acid-insoluble (klason) lignin in wood and pulp. In: Lin SY, Dence CW (eds) Methods in Lignin Chemistry. Springer-Verlag, Berlin, pp 34–39

    Google Scholar 

  6. Dence CW (1992) Determination of lignin in wood and pulp by acetyl bromide method. In: Lin SY, Dence CW (ed) Methods in Lignin Chemistry. Springer-Verlag, Berlin, pp 44–48

    Google Scholar 

  7. Iiyama K, Wallis AFA (1988) An improved acetyl bromide procedure for determining lignin in woods and pulps. Wood Sci Technol 22:271–280

    Article  CAS  Google Scholar 

  8. Katahira R, Nakatsubo F (1997) Chemical characterization ofEucalyptus globulus lignin: analysis by a modified nitrobenzene oxidation (in Japanese). In: Proceedings of the 42nd lignin symposium. Sapporo, pp 17–20

  9. Borchardt LG, Piper CV (1970) A gas Chromatographic method for carbohydrates as alditol-acetates. TAPPI 53:257–260

    CAS  Google Scholar 

  10. Zeronian SH, Cabradilla KE (1973) Further studies on the action of alkali metal hydroxides on cotton. J Appl Polym Sci 17:539–552

    Article  CAS  Google Scholar 

  11. Schuerch C (1975) The hemicelluloses. In: Browning BL (ed) The chemistry of wood. Robert E. Krieger, Huntington, p 195

    Google Scholar 

  12. Tuyet LTB, Iiyama K, Nakano J (1985) Preparation of carboxymethyl cellulose from refiner mechanical pulp. V. Phisical and chemical associations among cellulose, hemicellulose and lignin in wood cell walls. Mokuzai Gakkaishi 31:475–482

    Google Scholar 

  13. Isogai A, Ishizu A, Nakano J (1987) Residual lignin in unbleached kraft pulp. Part I. Alkali-extraction of residual lignin from unbleached kraft pulp solution. J Wood Chem Technol 7:311–324

    Article  CAS  Google Scholar 

  14. Isogai A, Ishizu A, Nakano J (1987) Residual lignin in unbleached kraft pulp. Part II. Analysis of unbleached kraft pulp by new permethylation method. J Wood Chem Technol 7:463–484

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Graduate School of Agriculture, Kyoto University, 606-8502, Kyoto, Japan

    Shuichi Hirosawa, Rui Katahira & Fumiaki Nakatsubo

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  1. Shuichi Hirosawa
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  2. Rui Katahira
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  3. Fumiaki Nakatsubo
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Correspondence to Shuichi Hirosawa.

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Hirosawa, S., Katahira, R. & Nakatsubo, F. Chemical structural elucidation of total lignins in woods I: fractionation of the lignin in residual wood meal after extraction of milled wood lignin. J Wood Sci 48, 46–50 (2002). https://doi.org/10.1007/BF00766237

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