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Our investigation was carried out in two phases. First we synthesized curcumin nanocrystals using a simple precipitation method and characterized their absorbance, crystallinity, size, and morphology by UV-visible spectroscopy, X-ray diffraction (XRD) spectroscopy, High Resolution Transmission Electron Microscopy (HRTEM) and Particle size Analyzer (PSA), in comparison with bulk curcumin. Characterization studies revealed that the protocol we standardized resulted in Curcumin nanocrystals with 10–200 nm size which was fairly soluble in water in contrast to bulk curcumin. Due to its crystallinity, nanocurcumin that we synthesized was also referred as Curcumin Nanocrystals. In Phase 2, we have assessed the comparative antioxidant efficacy of Curcumin nanocrystals and bulk Curcumin in the circulation of 1,2-dimethyl hydrazine-treated rats by investigating lipid peroxidation, antioxidant enzymes (superoxide …