Curcumin protects hemoglobin from nitrogen dioxide induced oxidation. Curcumin was also found to scavenge nitrogen dioxide in a concentration dependent way. The study also explains the ability of curcumin to protect hemoglobin from nitrite induced oxidation, where nitrogen dioxide is a key intermediate.
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Unnikrishnan, M.K., Rao, M.N.A. Curcumin inhibits nitrogen dioxide induced oxidation of hemoglobin. Mol Cell Biochem 146, 35–37 (1995). https://doi.org/10.1007/BF00926878
- nitrogen dioxide
- free radical scavenger