Die Bestimmung der Gluconsäure und Citronensäure. I. Die Bestimmung der Gluconsäure in Form des Kupfer‐Gluconat‐Komplexes

Metal-Gluconate Complexes

“…This procedure is only applicable when gluconic acid and its hydrolysis products are the sole materials in solution; the numbers given in the particular equation may well be erroneous because of the specific rotations used in developing the formula (48). Another procedure has been developed for determining gluconate ion which is based on the copper gluconate complex and a subsequent iodometric titration of the copper (69,70).…”