Conformational transition of native and modified gellan.
作者： Frederic Mazen , Michel Milas , Marguerite Rinaudo
DOI: 10.1016/S0141-8130(99)00070-7
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摘要: This paper concerns the characterisation of native gellan by differential scanning calorimetry (DSC) and rheology. The stability double helix is characterised Tm enthalpy conformational change. role external salt concentration investigated; it shown that only slightly modified. At ambient temperature, in 10−2 M NaCl, behaves as a loose gel (G′>G′′). behaviour disappears when temperature larger than 60°C. comparison with deacylated (commercial sample) shows position transition much more influenced concentration; helical structure less stable presents hysteresis between heating cooling runs increases. rheological corresponding to solution (G′
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