Abstract: The anti-oxidative effect of chilli seed extracts toward paprika oleoresin was evaluated by determining the absorbance with photoelectric colorimeter and calculating the residual rate of color value. The results showed that chilli seed extracts from supercritical fluid extraction had extremely high anti-oxidative effect toward paprika oleoresin. As the dosage of chilli seed extracts was 1 mg/g(paprika oleoresin), the residual rate of color value of paprika oleoresin was 9% higher than that of the paprika oleoresin without addition of extract and the stability of paprika oleoresin was improved apparently. In presence of oxidant (H₂O₂) or reducing agent (Na₂SO₃), the residual rate of color value of paprika oleoresin with addition of chilli seed extracts was 14.32% or 23.82% respectively higher than that of the paprika oleoresin without addition of extracts.

Key words: chilli seed extracts, paprika oleoresin, anti-oxidative effect, super-critical CO₂ extraction