Heat Stability of Proton Behaviors for Dietary Fiber in Water on Spin-Spin Relaxation Measured by 1H-NMR.

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  • SATO Yukinori
    Laboratory of Food Science and Technology, Kochi Women's University

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The proton relaxation behavior of dietary fibers on 1H-NMR was investigated with water systems before and after heat treatment at 85°C for 30 min. Quite similar spin-spin relaxation curves were observed for dietary fibers except agar with or without heat treatment in the water system. The relaxation times for the fast and slow components and proton populations for the two components were analyzed to evaluate interaction between dietary fiber and water more precisely. As a result, it turned out that there was little varia-tion in the relaxation time and the proton population before and after heat treatment as well. Therefore, most dietary fibers were inferred to be heat-stable in respect of proton ex-change for water.

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