Alkylresorcinols in Wheat Varieties in the HEALTHGRAIN Diversity Screen
2008
Andersson, Annica A.M. | Kamal-Eldin, Afaf | Fraś, Anna | Boros, Danuta | Åman, Per
The contents of alkylresorcinols (AR) were analyzed in 131 winter wheats, 20 spring wheats, 10 durum wheats, 5 spelt wheats, and 10 early cultivated forms of wheat (5 diploid einkorn and 5 tetraploid emmer), which are part of the HEALTHGRAIN diversity screen. AR were analyzed by gas chromatography (GC), which provides both total contents and relative homologue compositions, as well as with a Fast Blue colorimetric method that provides only total contents but which is fast and easily screens a large number of samples. There was considerable variation in the total AR content analyzed with GC: winter wheat (220-652 μg/g of dm), spring wheat (254-537 μg/g of dm), durum wheat (194-531 μg/g of dm), spelt (490-741 μg/g of dm), einkorn (545-654 μg/g of dm), and emmer wheat (531-714 μg/g of dm). The relative AR homologue composition was different for different types of wheat, with a C17:0 to C21:0 ratio of 0.1 for winter, spring, and spelt wheats, 0.04 for einkorn and emmer wheat, and 0.01 for durum wheat. The total AR content analyzed with the Fast Blue method was lower than that analyzed with GC but there was a good correlation between the two methods (R2 = 0.76).
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