Abstract
It has been shown that encapsulation of dietary polyphenols leads to increased solubility and bioavailability of these micronutrients. The encapsulation of dietary polyphenols resveratrol, genistein, and curcumin by folic acid-PAMAM-G3 and folic acid-PAMAM-G4 nanoparticles was studied in aqueous solution at physiological conditions, using multiple spectroscopic methods, TEM images, and docking studies. The polyphenol bindings are via hydrophilic, hydrophobic, and H-bonding contacts with resveratrol forming more stable conjugates. As folic acid-PAMAM nanoparticle size increased, the loading efficacy and the stability of polyphenol-polymer conjugates were increased. Polyphenol encapsulation induced major alterations of dendrimer morphology. Folic acid-PAMAM nanoconjugates are capable of delivery of polyphenols in vitro.
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