Abstract
Seven samples of commercial canola meal; 17 samples of canola seed; 2 samples of mustard seed; and one sample of acidulated canola soapstock were analyzed for xanthophyll concentration. The xanthophyll concentrations of the canola meals ranged from 4.0 to 11.9 mg/kg (mean, 7.2 mg/kg). The overall mean xanthophyll concentration in the samples of canola seed was 24.7 mg/kg, with a range of 10.8 to 38.6 mg/kg. The samples of Brassica campestris varieties of seed contained from 16.5 to 24.3 mg/kg with a mean of 21.7 mg/kg of xanthophyll in seed. The mean concentration of xanthophyll in the B. napus varieties was 35.4 mg/kg with a range of 33.3 to 38.6 mg/kg. Acidulated canola soapstock contained 832 mg of xanthophyll/kg. The two samples of mustard seed contained 6.8 and 10.6 mg of xanthophyll/kg, respectively.
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