Patent ID: 7371419

Claim:
A method for enriching chemoprotectant precursors in crucifer seed preparations comprising: (i) preparing an aqueous extract from crucifer seeds that contain glucosinolate; (ii) contacting the aqueous extract with an adsorbent; (iii) removing the adsorbent from the aqueous extract to obtain a glucosinolate-containing extract; (iv) drying the glucosinolate-containing extract to obtain a dried glucosinolate-containing extract; (v) mixing at least a portion of the dried glucosinolate-containing extract with a solvent to form a glucosinolate-containing suspension; (vi) optionally removing insoluble materials to form a clarified glucosinolate-containing suspension; (vii) contacting the glucosinolate-containing suspension from either (v) or (vi) with a catalyst; (viii) introducing hydrogen at a temperature of about 25° C. to about 450° C. and a pressure of about 10 to about 10,000 psi for a time sufficient to obtain a chemoprotectant precursor-enriched extract.