人工甘味料の分析法に関する研究(第1報) : サイクラミン酸ナトリウムの定量その1

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Determination of sodium cyclamate was studied by the polarographic method. Sodium cyclamate was decomposed by heating with AcOH and NaNO_2,and sulfuric ions liberated from sodium cyclamate were completely precipitated as PbSO_4 in 50% EtOH solution by the addition of excess of Pb(AcO)_2. The precipitate of PbSO_4 was filtered and surplus Pb ions were measured by polarography in the electrolytic solution of 45% EtOH with 0.04N NH_4CNS and 0.01N HCl as a supporting electrolyte, and Triton X-100 as a maximum suppressor. The amount of sodium cyclamate was inversely proportional to the wave height of Pb ions and, therefore, sodium cyclamate of 0.2〜9 mg./ml., particularly even 2.5 μg., could be easily determined indirectly. This method was not interfered by glucose, lactose, sucrose, starch, saccharin sodium, or dulcin. Consequently, this method is thought to be a very convenient and accurate way for the determination of sodium cyclamate, especially in artificial sweetening preparations.
公益社団法人日本薬学会の論文
1966-10-25