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Journal of Nanomaterials
Volume 2017, Article ID 6907149, 9 pages
Research Article

Fabrication of PLA-PEG Nanoparticles as Delivery Systems for Improved Stability and Controlled Release of Catechin

1Department of Integrative Biology, School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu 632014, India
2Department of Biotechnology, School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu 632014, India

Correspondence should be addressed to Zaved Ahmed Khan; moc.liamg@devaz.nahk

Received 25 May 2017; Revised 25 July 2017; Accepted 9 August 2017; Published 14 September 2017

Academic Editor: Ilaria Armentano

Copyright © 2017 Neha Atulkumar Singh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of this study was to develop an oral delivery system for the controlled release of catechin and evaluate the antioxidant potential and stability of catechin loaded PLA/PEG nanoparticles (CATNP). Nanoparticles were synthesized using a double emulsion solvent evaporation method. The fabricated nanoparticles were relatively small with a hydrodynamic diameter of 300 nm and an encapsulation efficiency of 95%. SEM image analysis showed uniform sized and spherically shaped nanoparticles. In vitro release profiles indicated a slow and sustained release of catechin from the nanoparticle. Stability of the nanoparticle in simulated gastric and intestinal fluids is maintained due to the PEG coating on the nanoparticles, which effectively protected catechin against gastrointestinal enzyme activity. Enhanced inhibition action of free radicals and metal chelation potential was noted when catechin was encapsulated in these polymeric nanoparticles. The reports obtained from this study would provide an opportunity for designing an oral delivery system aimed at inhibiting oxidative stress in the human body.