Curcumin is a natural polyphenol derived from a traditional herbal remedy. It shows the promising anti-inflammatory, anti-cancer and anti-oxidant activities. It is, however, only sparingly soluble in water and therefore its bioavailability is very low.As a solution to that problem we propose a new type of hybrid nanocarrier for effective curcumin.  The carrier is  based on bovine serum albumin (BSA) and N-dodecyl-N-glycidyltrimethylammonium-chitosan (HMchitosanGTMAC). Albumin is  known for its extraordinary ligand binding capacity and non-covalent reversible binding characteristics. Chitosan is a cationic, biocompatible polymer. Stable aqueous dispersion of bovine serum albumin (BSA) nanoparticles NPs containing curcumin was obtained by a coacervation process followed by electrostaticly driven  adsorption of cationic N-dodecyl-N-glycidyltrimethylammonium-chitosan (HMchitosanGTMAC) on the  NP surfaces. Variuos concentrations of HMchitGTMAC were used  for coating of  BSA NPs to stabilize the colloidal system and to control the release of curcumin. The physicochemical properties of the resulting objects were then studied. The size and surface potential of the nanoparticles were evaluated using dynamic light scattering (DLS) measurements. The morphology of the unloaded and curcumin-loaded nanocarriers was evaluated by Atomic Force Microscopy (AFM) and by Scanning Electron Microscopy (SEM). The binding constant (K_a) of curcumin to bovine serum albumin (BSA) and curcumin release profiles were determined. The high K_a value and plausible release profiles suggest that our novel delivery system, based on albumin, may act as an effective carrier for curcumin. 

Acknowledgements: Project operated within the Foundation for Polish Science Team Programme co-financed by the EU European Regional Development Fund, PolyMed, TEAM/2008-2/6.

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