ペクチンゲルの粘弾性について

概要

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The creep curve of the pectin gel was obtained with the parallel plate viscoelastometer to analyze the static viscoelasticity of the pectin gels. The 1.5_??_2.5% high methoxyl pectin (HMP) gels and the 2, 2.5% low methoxyl pectin (LMP) gels could be explained according to the six elements mechanical model consisting of Hookean body, two pairs of Voigt body and newtonean body. The elastic modulus was in the range of 104_??_106 dyn/cm2, and the coefficient of viscosity was in the range of 107_??_109 poise. By composing the master creep curve from creep compliance curves at different temperatures, we obtained the shift factors. The rule of reduced variables between temperature and time was found to exist in the temperature range of 11_??_49°C for HMP gels and 5.5_??_24.5°C for LMP gels. Retardation spectrum was also obtained and retardation time was found to distribute in the range of 1_??_105 sec at HMP gels and 1_??_106 sec at LMP gel.
社団法人日本農芸化学会の論文