Regression Estimates of Lysine and Other Amino Acids in Manitoba Barley

Dupchak, K. M.; Hickling, Dave

doi:10.4141/cjas90-042

Cited by 2 publications

(1 citation statement)

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“…The average values for lysine, methionine, threonine and tryptophan found in this study were very similar to values listed for hull-less barley by Patience and Thacker (1989), while considerably higher average values for arginine, cystine and isoleucine were found. However, the observed lysine values were similar to values predicted by the equations for covered barley of Dupchak and Hickling (1990). The observed values for the other essential amino acids were higher than the predicted values.…”

Section: Resultssupporting

confidence: 78%

Nutrient composition of the hull‐less barley cultivar, condor

Edney¹,

Tkachuk²,

MacGregor³

1992

J Sci Food Agric

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Eleven grain samples of Condor. a two-rowed, hull-less barley cultivar. were analysed for concentrations of protein, starch. amino acids and fibre. Starch levels were found to be consistently higher than that of a covered barley and approached that of a hard spring wheat. Acid-detergent fibre was found to be 70% lower in the hull-less samples than in the covered barley or the wheat. The Condor samples showed a wide range of protein concentrations (12.5-17.2% on a dry matter basis). The concentrations of arginine, cystine, isoleucine, lysine, methionine and threonine (percent dry matter basis) were consistently higher in the Condor barley samples assayed here than levels stated in the literature for barley. The concentrations (g (100 g protein)-') of cystine (P < 0.01), lysine (P < 0.001) and threonine (P < 0.01) decreased significantly as protein increased.Isoleucine, methionine and tryptophan showed no such effect. Both glutamic acid and proline concentrations increased significantly (P < 0.01) as protein increased which suggested higher amounts of hordeins in high protein Condor barley.

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Section: Resultssupporting

confidence: 78%