Osmotic coefficients of sodium, potassium, and calcium counterions have been determined in aqueous solutions on kappa‐, iota‐, and lambda‐carrageenans at 25°C. The experimental results are correlated with the calculated ones from the limiting law of Manning. An orderd secondary structure exists in kappa‐ and iota‐carrageenans. Its stability is discussed as a function of temperature, ionic strength, and the nature of the counterions.
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Rinaudo et al. (1979) studied this question.
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