Quantifying cyanogenic glycoside production in the acrospires of germinating barley grains
✍ Scribed by Swanston, J Stuart
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 199 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
Ethyl carbamate is an undesirable trace component in distilled beverages and its content in Scotch whisky is largely determined by the cyanogenic pre-cursor, epi-heterodendrin (EPH) from malted barley. A rapid colorimetric procedure can identify cultivars that do not produce EPH and attempts were made to quantify this test, to determine diþ ering levels of production. Using a given fresh weight of acrospire tissue from germinated grain, it was possible to distinguish between genotypes but diþ erences between replicates were substantial. Acrospire length was not a reliable indicator of EPH production and genotypes diþ ered not only in the quantity of EPH produced but in the rate and pattern of production.