スルピリン水溶液の着色におよぼす塩化リゾチームと酸の影響および着色機構について
1977 年 3 巻 3 号 p. 166-172
詳細
1977 年 3 巻 3 号 p. 166-172
The color of sulpyrine solutions grew in parallel with the concentration of sulpyrine and by addition of lysozyme chloride. The pH values of these solutions rose with time (t) as: pH=k log t. However, when acidic compounds were added to them, the rate of the change of pH values was decreased, and the coloration was controlled. In this case, k values as the rate constant were changed at about pH 2 and 2.6-3.2, and light color developed in the process of rising of pH values of the solutions above 2.6-3.2. These results were contrary to the properties of sulpyrine observed in decomposition to 4-methylaminoantipyrine in known solutions. Aldehyde was detected from coloring on the spot in thin-layer chromatography by Schiff's reagent. Therefore, it was considered that the colored matter was formylic compounds produced from residual sulpyrine without change at fourth position.
