Abstract

Two Egyptian sweet potato varieties were studied. The study showed considerable differences in chemical composition between the two varieties. The mineral found in the highest concentration was calcium, followed by magnesium, iron, copper, zinc and manganese. The chemical composition of sweet potato protein isolates indicated that the pulp had high protein content. The maximum solubility of nitrogen was at pH 12 and 17 amino acids were separated from the protein isolate of both peel and pulp of the Giza 69 variety and from the pulp of the Abees variety. The protein isolate of the Abees variety had only 16 amino acids.

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