A method is proposed which allows the determination of the glucosinolate content in commercial loads of rapeseed within 10 minutes. The procedure is based on the following steps: Homogenization of 10 g seeds, extraction of the glucosinolates with boiling water, enzymatic hydrolysis of the glucosinolates, removal of interfering substances with activated charcoal paper, detection of the liberated glucose using a glucose test paper, measurement of the colour intensity of the test paper with a pocket reflectometer and calculation of the glucosinolate content on basis of the measured values.
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W. Thies (1985) studied this question.
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