Abstract
For human nutrition the main source of vegetable proteins are cereal and legume seeds. The content of total soluble amino acids in mature endosperms of wildtype and maize opaque and floury mutants have been determined by HPLC. The total absolute concentration of soluble amino acids among the mutants and their wild-type counterparts varied depending on the mutant. In the o10, o11 and o13 mutants the concentrations were significantly increased when compared to their wild-type counterpart W22, whereas the mutants o1, o2, o13, fl1 and fl2 exhibited lower concentrations when compared to the wild-type Oh43, Similar results were observed fo r o5, o7 and fl3 in relation to their specific wild-type counterparts (B79, B37 and WT3, respectively). For soluble methionine content, o2 and Oh43 exhibited the highest concentrations. Significant differences were not observed for other amino acids such as lysine and threonine. The results suggest that the highlysine concentrations indicated originally for these mutants must be due to the amino acids incorporated into storage proteins, but not in the soluble form.
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