AAPS PharmSciTech

, 20:163 | Cite as

Preparation, Characterization and Antioxidant Evaluation of Poorly Soluble Polyphenol-Loaded Nanoparticles for Cataract Treatment

  • Deepal Vora
  • Segewkal Heruye
  • Dunesh Kumari
  • Catherine Opere
  • Harsh ChauhanEmail author
Research Article Theme: Translational Multi-Disciplinary Approach for the Drug and Gene Delivery Systems
Part of the following topical collections:
  1. Theme: Translational Multi-Disciplinary Approach for the Drug and Gene Delivery Systems


Cataract, one of the leading causes of blindness worldwide, is a condition in which complete or partial opacity develops in the lens of the eyes, thereby impairing vision. This study aimed to examine the potential therapeutic and protective effects of poorly soluble polyphenols like curcumin, resveratrol, and dibenzoylmethane, known to possess significant antioxidant activity. The polyphenols were loaded into novel lipid-cyclodextrin-based nanoparticles and characterized by particle size, polydispersity index, differential scanning calorimetry, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy (SEM), entrapment efficiency, and release studies. Ferric-reducing ability of plasma and 2,2-diphenyl-1-picrylhydrazyl chemical assays were used to evaluate their antioxidant properties based on their free radical quenching ability. Biochemical in vitro assays were used to examine these polyphenols on hydrogen peroxide-induced formation of cataracts in bovine lenses by estimating total glutathione content and superoxide dismutase activity. Nanoparticles were thermostable and amorphous. Particle size of curcumin, resveratrol, and dibenzoylmethane nanoparticles were 331.0 ± 17.9 nm, 329.9 ± 1.9 nm, and 163.8 ± 3.2 nm, respectively. SEM confirmed porous morphology and XRD confirmed physical stability. Entrapment efficiency for curcumin-, resveratrol-, and dibenzoylmethane-loaded nanoparticles was calculated to be 84.4 ± 2.4%, 72.2 ± 1.5%, and 86.4 ± 0.6%, respectively. In vitro release studies showed an initial burst release followed by a continuous release of polyphenols from nanoparticles. Chemical assays confirmed the polyphenols’ antioxidant activity. Superoxide dismutase and glutathione levels were found to be significantly increased (p < 0.05) after treatment with polyphenol-loaded nanoparticles than pure polyphenols; thus, an improved antioxidant activity translational into potential anticataract activity of the polyphenols when loaded into nanoparticles was observed as compared to pure polyphenols.

Key Words

polyphenols solubility antioxidant activity nanoparticles biochemical assay anticataract 



The author wishes to acknowledge Creighton University, Omaha, for funding and the use of instruments in completing this project.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflicts of interest.


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Copyright information

© American Association of Pharmaceutical Scientists 2019

Authors and Affiliations

  • Deepal Vora
    • 1
  • Segewkal Heruye
    • 1
  • Dunesh Kumari
    • 2
  • Catherine Opere
    • 1
  • Harsh Chauhan
    • 1
    Email author
  1. 1.School of Pharmacy and Health ProfessionalsCreighton UniversityOmahaUSA
  2. 2.College of Saint MaryOmahaUSA

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