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Basic Study on Molecular Motion in Suplamolecules and Its Application by Field Gradient NMR and ESR.

Research Project

Project/Area Number 09640717
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 分離・精製・検出法
Research InstitutionTokyo University of Fisheries

Principal Investigator

WATANABE Tokuko  Tokyo University of Fisheries・Department of Food Science and Technology, Professor, 水産学部, 教授 (40092382)

Co-Investigator(Kenkyū-buntansha) MATSUKAWA Shingo  Tokyo University of Fisheries・Department of Food Science and Technology, Assista, 水産学部, 助手 (30293096)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1998: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1997: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsWater / Polysaccharide / Sol-gel Transition / Field gradient NMR / Spin Probe ESR / Saturation Transfer EPR / Diffusion Coefficient / NMR Relaxation / 糖鎖 / 磁場勾配NMR / 飽和移動EPR / 拡散計測
Research Abstract

I Coil-Helix Transition and Sol-Gel Transition in Gellan / Cation / Water System
Cation dependence of both transitions has been studied by NMR relaxation time and molar ellipticity by CD.The transition temperature and a reversibility in the coil-helix transition showed cation dependence, in which KandCs ions differently affected from other alkali cations, For the sol-gel transition, divalent cation enhanced the gelation by forming crosslinks, while monovalent cation firstly contributed a shielding of anionic charge of gellan chain and then helped the gelation by hydrogen-bonding. Gelation mechanism was explained on the basis of the hydrogen bonding behavior of water which clearly appears in T_2 relaxation time.
II Gelation Mechanism in Dextran / Cation / Water System
Only K ion contributed to gelation of the neutral dextran polymer by potassium bonding, which was proved by K-NMR and water diffusibility. The selectivity for K ion is due to the ionic radius and hydration behavior of K ion : … More Na ion enhanced K/dextran gel structure and resulted thermal stability of the gel.
III Gel Formation Mechanism for Low-set and High-set Curdlan Gels
Gel formation process of the curdlan showed very complicated structural change of the chain. Water mobility and proton exchange reflected the change in details. Existence of three types of water in the gel matrix was proved by spin-probe ESR method in cooling and heating process.
IV Hydration Behavior in Pullulan Solution
High concentration of pullulan solution showed a stable hydration sphere around the polymer chain, where motional exchange of hydrated water molecules into bulk water was very slow. The specific hydration behavior in pullulan solution was investigated.
V Freezing and Thowing Process in Starch and Curdlan Gels
The process was monitored by spin-probe ESR method An amorphously freezing water molecules were detected and the amount of the water was estimated. Rotational correlation time was evaluated in super-cooled, unfrozen and frozen water molecules. Less

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Tokuko WATANABE: "Structural Change of Polymer Chains of Gellan Monitored by Circular Dichroism." Progress in Colloid and Polymer Science. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tokuko WATANABE: "Hydrogen Bonding Behavior of Gellan in Solution During Structural Change Observed by 1H NMR and CD Methods." Progress in Colloid and Polymer Science. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Ruike et al.: "Changes in the Bead Structure of Crosslinked Polymer Gels During Drying and Freezing." Cryo-Letters.20(2). 61-68 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shingo MATSUKAWA: "Swelling and Transport in Polyisoprene Networks Exposed to Benzene-Cyclohexane Mixtures : A Case Study in Multicomponent Diffusion." Macromolecules. 31(23). 8124-8133 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tokuko WATANABE & Shingo MATSUKAWA: "Diffusion of Water and Polymer Chain in Polysaccharide Sol and Gel States Studied by PFGNMR, NMR Imaging and EPR." Internationa Symposium on Water Management and Distribution of Quality Foods. Book of Abstracts. 140- (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tokuko WATANABE: "Specialist periodical Reports : Nuclear Magnetic Resonance, Vol27, Chapter 13, NMR Imaging." G.A.Webb(Royal Society of Chemistry of London), 431-457 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tokuko WATANABE: "Specialist periodical Reports : Nuclear Magnetic Resonance, Vol26, Chapter13, NMR Imaging." G.A.Webb(Royal Society of Chemistry of London), 447-465 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Watanabe: "Diffusion of Water in Polysaccharide Gels." Magnetic Resonance Spectroscopy in Food Science : Proceedings of the International Workshop on Applications of Magnetic resonance and Other Spectroscopic Techniques to Food Science. 73-80 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Ruike, S.Takada, N.Murase, & T.Watanabe: "Changes in the Bead Structure of Crossliked Polymer Gels During Drying and Freezing" Cryo-Letters. 20. 61-68 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.Matsukawa, Z.Huang, & T.Watanabe: "Structural Change of Polymer Chains of Gellan Monitored by Circular Dichroism" Progress in Colloid and Polymer Science. (accepted). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.Matsukawa, Z.Tang, & T.Watanabe: "Hydrogen Bonding Behavior of Gellan in Solution During Structural Change Observed by 1H NMR and CD Methods." Progress in Colloid and Polymer Science. (accepted). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Watanabe, J.Leisen, & K.Gersonde: "Uniqueness of Polysaccharide potassium Ion Interactions for Dextran Gelation Monitored by ^<39>KNMR and Water Diffusibility" J.Magn.Reson.(submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Watanabe, NMR Imaging: "Specialist periodical Reports : Nuclear Magnetic Resonance"ed.by G.A.Webb, (Royal Society of Chemistry of London), Vol.26, Chapter 13. 447-463 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Norio, Murase, et al.: Chap.4, Water in Gels, in"Gel technology". 226-232 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Watanabe, NMR Imaging: Specialist periodical Reports : Nuclear Magnetic Resonance"ed.by G.A.Webb, (Royal Society of Chemistry of London) , Vol.27, Chapter 13. 431-457 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Watanabe, NMR Imaging: Specialist periodical Reports : Nuclear Magnetic Resonance"ed.by G.A.Webb, (Royal Society of Chemistry of London) , Vol.28, Chapter 13(in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tokuko WATANABE: "Structural Change of Polymer Chains of Gellan Monitored by Circular Dichroism." Progress in Colloid and Polymer Science. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tokuko WATANABE: "Hydrogen Bonding Behavior of Gellan in Solution During Structural Change Observed by 1H NMR and CD Methods." Progress in Colloid and Polymer Science. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Shingo MATSUKAWA: "Swelling and Transport in Polyisoprene Networks Exposed to Benzene-Cyclohexane Mixtures:A Case Study in Multicomponent Diffusion." Macromolecules. 31(23). 8124-8133 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tokuko WATANABE & Shingo MATSUKAWA: "Diffusion of Water and Polymer Chain in Polysaccharide Sol and Gel States Studied by PFGNMR,NMR Imaging and EPR." Internationa Symposium on Water Management and Distribution of Quality Foods.Book of Abstracts. 140 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.WATANABE: "Changes in the Network Structure of Polymer Gels During Drying." Internationa Symposium on Water Management and Distribution of Quality Foods.Book of Abstracts. 123 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tokuko WATANABE: "Specialist periodical Reports:Nuclear Magnetic Resonance,Vol27,Chapter 13,NMR Imaging." G.A.Webb(Royal Society of Chemistry of London), 431-457 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tokuko WATANABE: "Diffusion of Water in Polysaccharide Gels" Magnetic Resonance Spectroscopy in Food Science:Proceedings of the International Workshop on Applications of Magnetic Resonance and other Spectroscopic Techniques to Food Science.73-80 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Tokuko WATANABE: "Diffusion of Water and Polymer Chains in Polysaccharide Sol and Gel States Studied by PFGNMR,NMR Imaging and EPR." Proceedings of the ISOPOW7:Water Management in the Design and Distribution of Quality Foods. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Tokuko WATANABE: "NMR Imaging" G.A.Webb, (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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