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| | The Gluten Proteins and Deamidated Soluble Wheat Protein (SWP) |
 | | The gliadins and glutenins are the storage proteins of wheat endosperm and they tend to be rich in asparagine, glutamine, arginine or proline (Abrol et al., 1971; Derbyshire et al., 1976; Kirkman et al., 1982; Larkins, 1981; Spencer and Huggins, 1982) but very low in nutritionally important amino acids lysine, tryptophan and methionine (Appendix A). |
 | | The gliadins are divided into four groups, called alpha-, beta-, gamma-, and omega-gliadins, based on their electrophoretic mobility at low pH (Woychick et al., 1961), but more than 30 components can be separated by two-dimensional electrophoretic procedures. |
 | | Because of the monomeric character of alpha-type gliadins, and the absence of free sulphydryl groups, it has been assumed that the cysteine residues are linked by three intramolecular disulphide bonds (Kasarda et al., 1987). |
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