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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Chemical structures of the condensed tannins in the fruits ofDiospyros species

Journal of Wood Science volume 48, pages 414–418 (2002)Cite this article

Abstract

The structural variety of the condensed tannins (proanthocyanidins) in the fruits of 16Diospyros species are reported. Eleven species contained condensed tannins mostly consisting of a mixture of catechin (CA) and gallocatechin (GCA) repeating units; the other five species did not. The GCA content in the CA-GCA total varied from 0.3% to 84.6%. The number of esterified gallic acid per one flavan repeating unit (degree of galloylation, DG) ranged from 0.01 to 0.89. The GCA content was found to be proportional to the DG values. Thus, 16Diospyros species tested may be classified into five groups by the analytical data of their condensed tannins. It may be interesting to compare their structural characteristics with those of the condensed tannins in other fruits, leaves, woods, and barks from the viewpoint of their biosynthesis and function in the plants.

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Authors and Affiliations

  1. Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, Sakyo-ku, 606-8502, Kyoto, Japan

    Fumiaki Nakatsubo, Kenichi Enokita & Koji Murakami

  2. Division of Agronomy and Horticultural Science, Graduate School of Agriculture, Kyoto University, 606-8502, Kyoto, Japan

    Keizo Yonemori & Akira Sugiura

  3. Department of Horticulture, Faculty of Agriculture, Kinki University, 631-8505, Nara, Japan

    Naoki Utsunomiya

  4. Department of Horticulture, Faculty of Agriculture, Kasetsart University, 10900, Bangkok, Thailand

    Suranant Subhadrabandhu

Authors
  1. Fumiaki Nakatsubo
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  2. Kenichi Enokita
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  3. Koji Murakami
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  4. Keizo Yonemori
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  5. Akira Sugiura
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  6. Naoki Utsunomiya
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  7. Suranant Subhadrabandhu
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Correspondence to Fumiaki Nakatsubo.

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Nakatsubo, F., Enokita, K., Murakami, K. et al. Chemical structures of the condensed tannins in the fruits ofDiospyros species. J Wood Sci 48, 414–418 (2002). https://doi.org/10.1007/BF00770702

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  • DOI: https://doi.org/10.1007/BF00770702

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