Rapeseed meal extract antioxidative activity

As mentioned in Section 15.5 of this chapter, rapeseed meal extracts are potent free radical scavengers. To further investigate the antioxidative power, inhibition of hydroperoxides and propanal/hexanal in o/w emulsion was investigated. During auto-oxidation in the emulsion, different data for oxidation status were determined, such as increases in the primary and secondary oxidation products during the course of incubation, and percent inhibition as compared with the control. It is important to use more than one method to determine the antioxidant activity to evaluate the... 

Amarowicz et al. (2000) and Matthaus (2002) investigated the effect of rapeseed phenolics on radical scavenging. The antioxidant activity of ethanolic (95%) extract of rapeseed meal towards the oxidation of rapeseed oil was better than that of some widely used synthetic antioxidants (Wanasundara and Shahidi, 1994). Phenolic compounds present in crude rapeseed oil have also shown antioxidant properties (Koski et al., 2003) in bulk and emulsified methyl linoleate and lecithin-liposome systems. Amarowics et al. (2003) investigated the antioxidant activity of phenolic fractions of rapeseed (total three fractions) using a P-carotene-linoleate model system and enhanced chemiluminescence and photochemiluminescence methods. A measure... 

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