Aldonic acids paper chromatography

Smith and coworkers152 published a relatively complete paper on the thin-layer chromatography, on silica gel, of carbohydrates of low molecular weight. Bancher and coworkers153 reported the thin-layer chromatography of degradation products of carbohydrates, including aldonic acids and aldonolactones. 

The relationship between structure and paper-chromatographic mobility of aldono-1,4-lactones has been discussed.65 Butanone, saturated with water, is suitable for the preparative separation of lactones on cellulose columns free acids and reducing sugars move very slowly in this system. Separation of aldono-1,4-lactones and of aldonic acids as their O-(trimethylsilyl) derivatives has been accomplished.66 The mass spectra of such derivatives are characteristic, so that it is possible to identify aldonic acids67 and lactones68 by means of combined gas chromatography-mass spectrometry. 

The hydrolysis of o-galactono-l,4-lactone has been examined using pH, optical rotation, and conductance methods, and the abilities of a series of aldonic, alduronic, and aldaric acids to form complexes with Fe +, Fe +, Mn +, Cu +, Al +, Ni +, and Co + ions have been investigated using paper chromatography. Bivalent metal ions have been shown to influence the proportions of n-ribo and D-ora6//70-cyanohydrins obtained when D-erythrose reacts with sodium cyanide. ... 

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