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Infrared-spectra of 2,3-dicarboxy derivatives of pectic acid

Mp. Filippov, A. Malovíková, and R. Kohn

Centre for Automation of Scientific Research and Metrology, Academy of Sciences of Moldavian SSR, SU-277028 Kishinev


Abstract: A series of 2,3-dicarboxy derivatives of sodium pectate (oxidation degree DO 0.0 to 0.5) was obtained by a two-step oxidation of potassium pectate by NaIO4 and NaClO2; their IR spectra were measured using a KBr technique. The spectra were interpreted considering mainly the structural changes evoked by oxidation of pectic acid, i.e. by opening of the pyran ring of D-galacturonic acid units and formation of couples of new (C-2) and (C-3) carboxyl groups. Properties of these carboxyl groups are different from those of uronic acids.

Full paper in Portable Document Format: 395a693.pdf


Chemical Papers 39 (5) 693–703 (1985)

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