電解製糖に関する研究 (第1報)
基礎的研究 (其1)
1950 年 70 巻 9 号 p. 494-500
詳細
1950 年 70 巻 9 号 p. 494-500
In general, electrolysis of a solution obtained by the hydrolysis of polysaccharides with acid, placed in the cathode chamber of a diaphragm electrolytic cell, allowing acid ions to tranber quantitatively into the anode chamber, acids can be recovered, if sulfuric or nitric acids are used, as anolyte, and monosaccharides of high purity can be obtained from the neutral sugar solution as catholyte. A new process of preparing monosaccharides, designated as the electrolytic preparation of sugars, combines this process of acid saccharification of polysaccharides and an electrolytic process of neutralization.
Fundamental studies of this process were carried out in order to determine its feasibility and following points were made clear.
1) The amount of acid in acid saccharification solution decreases in direct linear proportion to the amount of current passed and is removed quantitatively. In the case of sulfuric and nitric acids, these acids are recovered almost quantitatively.
2) The dissolved monosaccharides (glucose, xylose, fructose) are not electrolytically reduced.
3) Any acids that are suitable for saccharification and have a large transport number can be used in this process.
4) Glucose of high purity can be obtained in a very high yield by the electrolytic deacidification of saccharification solution obtained by treating starch with sulfuric acid at a room temperature.
