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Changes in the composition of amino acids during manufacturing process of non-centrifuged cane sugar (Kokuto)

Amino acids were analyzed in mixed juice, clarified juice, syrup, high syrup and the product (Kokuto) obtained from various stages of manufacturing Kokuto. The results showed that the amino acids were not removed in the process of manufacturing Kokuto but became condensed together with sucrose. The respective samples from the Kokuto manufacturing process were found to contain more than twenty kinds of amino acids, of which 70 to 80% were composed of acidic amino acids, such as Asp, Asn, Glu, and Gln. Among the acidic amino acids, Asp plus Asn, and Gln plus Glu accounted for 60 to 70% and 11 to 14% respectively

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