Nitrogen composition of bean cultivars grown for dry seeds
Kosson, Ryszard | Bąkowski, Józef
Polish bean cultivars grown for dry seeds were characterized in respect to total nitrogen content and protein nitrogen content, and were compared to foreign cultivars. The effect of two different regions of cultivation on total nitrogen content in seeds of some bean cultivars was evaluated also. Based on the differential solubility of bean proteins, the contents of albumins, globulins and other fractions in the seeds of six Polish bean cultivars (Phaseolus vulgaris and Phaseolus multiflorus), cultivated for dry seeds, were determined. It was found that the total nitrogen content in the seeds of Polish cultivars was lower on average, by 0.3% in comparision to foreign cultivars. Seeds of the same cultivar grown in 2 regions did not differ in total nitrogen content. The protein nitrogen content in seeds makes up 82.2% of total nitrogen and does not depend on the total nitrogen content in each cultivar. It was found that globulins made up on average 70% of the proteins in the investigated bean cultivars.
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