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  • Title: Homoarginine, β-ODAP, and asparagine contents of grass pea landraces cultivated in Turkey.
    Author: Onar AN, Erdoğan BY, Ayan I, Acar Z.
    Journal: Food Chem; 2014 Jan 15; 143():277-81. PubMed ID: 24054240.
    Abstract:
    The seeds of grass pea (Lathyrus sativus L.), a drought tolerant crop, were analysed for quantitative determination of the free amino acids β-N-oxalyl-l-α,β-diaminopropionic acid (β-ODAP), homoarginine and asparagine by a simple and fast capillary electrophoretic method. In boric acid (80mM, pH 8.0) running buffer system, not only were α and β-ODAP successfully separated, but also an efficient sample stacking was achieved during hydrodynamic sample introduction. The validated method was used for quantification of β-ODAP, homoarginine and asparagine in seed extracts of 52 Lathyrus local landraces from various regions of Turkey and one released cultivar. The concentration ranges of amino acids were found as 0.21-1.27% (w/w) for homoarginine, 0.10-0.87% (w/w) for β-ODAP and 0.006-0.47% (w/w) for asparagine. A positive correlation between homoarginine and β-ODAP quantities in seeds of 53 Lathyrus local landraces was shown to exist (r(2)=0.649).
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