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The use of sorghum (Sorghum bicolor L. Moench) dhurrinase-enriched preparation in the determination of total cyanide in sorghum and sorghum products



The use of sorghum (Sorghum bicolor L. Moench) dhurrinase-enriched preparation in the determination of total cyanide in sorghum and sorghum products



Journal of food biochemistry 8(1): 17-29



A dhurrinase (sorghum beta-glucosidase II) which catalyzes the hydrolysis of dhurrin (p-hydroxy-L-mandelonitrile beta-D-glucoside) was purified 87-fold from sorghum seeds using acetone precipitation, bentonite adsorption and column chromatography on hydroxyapatite and DEAE-cellulose. Dhurrin, the natural substrate for this beta-glucosidase, was used for enzyme assay. Dhurrinase, as opposed to alkali hydrolysis of dhurrin for cyanide assay, proved to be more efficient in releasing free assayable cyanide (CN-) during the determination of total cyanide in sorghum and sorghum-derived products.

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Accession: 013212370

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DOI: 10.1111/j.1745-4514.1994.tb00486.x


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