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1996 Fiscal Year Final Research Report Summary

Design of Lignin-Based Biofunctional Materials and Their Applications

Research Project

Project/Area Number 07660219
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林産学
Research InstitutionMie University

Principal Investigator

FUNAOKA Masamitsu  Mie Univ., Fac.Bioresources, Assoc.Prof., 生物資源学部, 助教授 (50093141)

Project Period (FY) 1995 – 1996
KeywordsLignin / Lignophenol derivatives / Phase-separation process / Protein / Enzyme immobilization / Bioreactor / Hydrophobic interaction / Biofunctional materials
Research Abstract

Highly phenolic lignin derivatives (lignophenol derivatives) with different phenolic functionalities were synthesized directly from native lignins, through the phase-separation process using phenol derivatives and concentrated acid. The relationships between the structures of lignophenol derivatives and their functions for proteins were discussed.
Lignophenol derivatives had much higher affinities for proteins, compared with conventional lignins : -10 and -100 times higher in lignomonophenols and lignopolyphenols, respectively. The protein affinity was significantly affected by the substitution pattern of phenolic hydroxyl groups and was decreased by the introduction of hydrophobic alkyl substituents. The protein adsorbing capacities of lignophenol derivatives differed with the species from which they were derived. The maximum protein adsorption was achieved at the isoelectric points of used proteins. The lignophenol derivative-protein complex was rapidly and perfectly separated into lignin and protein moieties in aprotic solvents, although it was very stable at any pH in aqueous solution.
The enzymes immobilized on lignophenol derivatives retained high activity : especially an enzyme on lignocresol comparable to a native one. The activity patterns had good correlations between native and immobilized enzymes.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 船岡正光: "相分離反応系を応用するフェノール系リグニン素材の誘導とその機能" 熱硬化性樹脂. 16. 151-165 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 船岡正光: "フェノール系高分子リグニン素材の誘導と側鎖フェノール核の隣接基効果を応用するその精密構造制御" ネットワークポリマー. 17. 121-130 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masamitsu Funaoka: "Characteristics of lignin structural conversiun in a phase-separative reaction system compased of creol and swfuric acid" Holgforschung. 50. 245-252 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masamitsu Funaoka: "Synthesis of phenolic lignin deriuatiues by phase-separation process and their functions for protein immobilization" Transactions of the Material Research Society of Japan. 20. 163-166 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 船岡正光: "機能性リグノフェノールの合成とエコマテリアルへの展開" APAST. 22. 6-11 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 船岡正光: "天然リグニンからのポリマー合成" 高分子加工. 46. (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 船岡正光: "木材科学講座1:概論;森林資源とその応用" 海青社, (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Funaoka, M.Matsubara, N.Seki and S.Fukatsu: "Conversion of Native Lignin to Highly Phenolic, Functional Polymer and Its Separation from Lignocellulosics" Biotech.Bioeng.46. 545-552 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Funaoka: "Synthesis of Phenolic Lignin Derivatives in a Phase-Separative Reaction System and Their Functions" J.Thermosetting Plastics. 16. 151-165 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Funaoka and S.Fukatsu: "Characteristics of Lignin Structural Conversion in the Phase-Separative Reaction System Composed of Cresol and Sulfuric Acid" Holzforschung. 50. 245-252 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Funaoka, H.Ioka, T.Hosho and Y.Tanaka: "Synthesis of Phenolic Lignin Derivatives from Native Lignins and Their Functionality Control by the Participation of Calpha-Phenolic Nuclei" J.Network Polymer. 17. 121-130 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Funaoka, H.Ioka and N.Seki: "Synthesis of Phenolic Lignin Derivatives by Phase-Separation Process and Their Functions for Protein Immobilization" Trans.Material Res.Soc.J.20. 163-166 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.T.Chen, M.Funaoka and Y.Z.Lai: "Attempts to Understand the Nature of Phenolic and Etherified Components of Wood Lignin" Wood Sci.Technol.(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Funaoka, H.Ioka and N.Seki: "Protein Affinity of Lignophenols Derived from Native Lignins and the Functions of Their Complexes with Enzymes" Proc.European Workshop on Lignocellulosics and Pulp. 311-317 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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