Untersuchungen über Glykonsäure unter besonderer Berücksichtigung ihres Nachweises und ihrer Bestimmung

The Production of Gluconic Acid and 2-Keto-Gluconic Acid from Glucose by Species of Pseudomonas and Phytomonas

“…Such purified samples were identified by the comparison of calcium content, copper reduction values and optical rotation with pure known materials. The original identification of 2-ketogluconic acid was made by examination of the methyl ester (Ohle 1937) and TABLE 1 The production of gluconic acid by species of Pseudomonas (Diemair, Bleyer and Schneider 1935).…”

Spectrophotometric Determination of Gluconic Acid and Its Salts

“…Removal of the cations by ion exchange, followed by titration with standard base, has been the subject of investigations (2,18,22). Others have attempted to determine gluconic acid by a gravimetric approach, using phenylhydrazine as the precipitating agent (7). There is even an enzymological micromethod (4) and a recently developed complexometric titration (1ß).…”

“…Spectrographic analysis is used frequently for determining the mineral composition of plant material. Mathis (#), Mitchell (4), Vanselow and Liebig (7), and Sayre (6) have published methods for the spectrographic analysis of plants. Techniques usually follow one of three general types: analysis of plant ash as such, analysis of a solution of the ash placed on an electrode, and analysis of a chemically concentrated aliquot of the sample.…”