Faba bean seed content of amino acid and chemical score effected by Zinc and Boron
DOI:
https://doi.org/10.59658/jkas.v2i3.500Abstract
Samples of faba bean cv. civilian were collected from field experiment carried out on field of department of field crops, college of agriculture-university of Baghdad. Then the samples were subjected to gas chromatography to analyze the essential and non-essential amino acid that formed the protein content and evaluated the chemical scores effected by boron and zinc. Results showed that the two essential amino acids Leucine and Lysine were higher than others essential amino acids of (7.25 and 7.15, and 6.95 and 6.74 g.100g-1), for zinc and boron, respectively. While the sulphur-containing essential amino acid had the lowest content of (0.76 and 0.82 g.100g-1), for zinc and boron, respectively. But this acid was increased by increased boron levels from 0 upto mgB.L-1 of 0.78-0.86g.100g-1protein). Furthermore, the results revealed the predominant amino acids were Glutamine of 17.65 and 17.63 g.100g-1 protein, Asparagine of 10.13 and 10.17 g.100g-1 protein, Arginine of 7.38 and 7.78 g.100g-1 protein and Proline of 6.72 and 6.61g.100g-1 protein, for zinc and boron, respectively. Moreover, the chemical score analysis pointed that the faba bean protein had the highest content of amino acids in comparison with their mirrors in FAO reference. In spite of this increase, the analysis determined that the sulphur-containing amino acid (Methionine) was the limiting essential amino acid in feeding, because of being decreased its chemical score. Thus, it could be concluded that the application of nutrients with spraying or incorporatedly could increase and improve amino acid in protein content which boron proportionally improve the limiting amino acid in feeding. So, the application of good soil and crop management is the best tool for improving faba bean content of amino acids. Therefore, it could be recommended that the minerals should be uniform with spraying and incorporatedly in soil. From other aspect, faba bean could be subjected to breeding program to improve nutritional quality and increase its limited amino acid content.
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