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. 2016 Oct 20;6:35764. doi: 10.1038/srep35764

Table 5. Stoichiometry (NC), association constant (Ka C), standard enthalpy (ΔHoC) and standard entropy (ΔSoC) of different vitamin-β-cyclodextrin inclusion complexes obtained from isothermal titration calorimetric study at 298.15 K.

  NC/Sites KaC × 10−3/M−1 ΔHoC/kJ mol−1 ΔSoC/J mol−1K−1
Nicotinic acid 1.06 ± 0.0466 1.498 ± 0.155 −20.58 ± 1.53 −8.96
Ascorbic acid 0.99 ± 0.0111 3.655 ± 0.335 −22.28 ± 1.06 −5.21