Rapeseed protein fractions: I.—Preparation of a detoxified lipid‐protein concentrate from rapeseed (Brassica napus L.) by a water‐ethanol extraction method

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Abstract
Lipid‐protein concentrates, i.e. lipid‐rich protein concentrates, were prepared from rapeseeds (Brassica napus L.) by an extraction technique using aqueous ethanol as solvent. After three washings in hot water, the lipid‐protein concentrate contained less than 0.4 mg/g of organic aglucons or not more than 5% of the content of organic aglucons in raw rapeseeds. After defatting, this protein concentrate contained only 0.04 mg/g of organic aglucons. The protein content of the preparation was 48% (N × 6.25) while the fat content was 31%.