抄録
Starch saccharified solution with H2SO4, HCl, H2C2O4 or HNO3 under normal or high pressure was submitted to electrolysis in the cathode chamber of the porcelain diaphragm cell according to the method which has been published in the previous papers _??_J. Pharm. Soc., Japan. 70, 494, 500, 506, 510, 513 (1950)_??_ to make a contribution to the the production of starch sugar or syrup.
It was found that neutral solution free from acid ion (SO4--, Cl-, C2O4--) and heavy metals(Fe, Cu, Pb) was obtained by this electrolysis with a remarkable decrease of its color intensity and ash content, though in every case no neutralizer was employed. The acid can be recovered and re-used for saccharification in the case of H2SO4 (or HNO3).
Then we got a successful result in the production of pure starch sugar and syrup by the continuous neutralization of saccharified solution (H2SO4, high pressure) through the electrolysis of cascade-flow-type on a semi-commercial scale.
