A red pigment was formed when heating dehydroascorbic acid in the presence of ${alpha}-amino$ acids and thought to be an intermediate amino-reductone in the Strecker degradation. The reaction of pigment formation can be kinetically expressed as two-step consecutive first-order in the presence of excess of ${alpha}-amino$ acids. The reaction rate constants were successfully determined by employing various amino acids (L-His., L-Gly., L-Thr., L-Ser. ) at different pH. The results suggested the formation of the red pigment was most favorable at the pH 5.0.