Stability and antioxidant activity of beta carotene in conventional and high oleic canola oil

Conventional canola oil(CO) and high oleic canola oil (HOCO) were stored under autoxidative and photooxidative conditions. beta-carotene was added at 0 to 120 ppm. The oils were diluted in mobile phase and injected onto an HPLC column to trade beta-carotene changes over time. Peroxide values were followed to assess the oxidative stability of the oils.beta -carotene was more stable in HOCO than in CO under autoxidative conditions, but no difference between oils was observed under photooxidative conditions. The HOCO was more stable against autoxidation, and CO was more stable against photooxidation. Antioxidant activity was shown by beta-carotene in both oils, which contained natural tocopherols, during both autoxidative and photooxidative conditions.