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- W2907472221 abstract "Abstract This paper describes the guest-host complex formation of anthranilic acid (2-aminobenzoic acid, AA) and different natural and modified cyclodextrins (CDs), using steady state fluorescence. The experimental data point to the formation of 1:1 inclusion complexes with natural (s and ɣ-CD) and modified (HP-s, HE-s and M-s-CD) CDs. Of the natural CDs, the s-CD complex showed the highest encapsulation constant (KF) value (14056 ± 1241 M−1). However, modified s-CDs showed higher binding constants than s-CDs. Of the modified CDs, M-β-CD showed the highest KF (18622 ± 897 M−1). To gain information on the encapsulation process of M-s-CD/AA, the thermodynamic parameters of the complexation (ΔH, ΔS and ΔG), were studied. The results showed positive entropy (66 ± 7.9 J mol−1 K−1), negative enthalpy (−5.74 ± 2.96 kJ mol−1) and a change in Gibbs free energy at 25 °C (−24.30 ± 0.27 kJ mol−1). Finally, a computational study carried out using molecular docking simulations showed the high correlation between experimental values and computed scores. The complexation of M-s-CD/AA depends on several physicochemical factors including temperature and pH. The values of KF exhibited a strong negative relation with temperature and pH. Moreover, the interaction of AA and M-s-CD was most effective in the pH region where the molecule presents intramolecular hydrogen bonds that neutralize the charge of the protonated species of AA." @default.
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- W2907472221 date "2019-06-01" @default.
- W2907472221 modified "2023-10-18" @default.
- W2907472221 title "Nanoencapsulation as fluorescence enhancer of vitamin L1 (anthranilic acid). An exhaustive study" @default.
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- W2907472221 doi "https://doi.org/10.1016/j.foodhyd.2019.01.008" @default.
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