Chemistry of Natural Compounds

, Volume 20, Issue 4, pp 404–406 | Cite as

Modification of the titrimetric method of analyzing pectin substances

  • S. P. Afanas'ev
  • É. P. Panova
  • G. N. Katseva
  • E. P. Kukhta
  • V. Ya. Chirva
Article

Abstract

A potentiometric variant of the titrimetric method of analyzing pectin substances has been developed which is distinguished by adequate accuracy and good reproducibility. The modified method has been tested on methyl (methyl 2,3-di-O-methyl-α,β-galactopyranosid)uronate and has been used for determining the free (Kf) and esterified (Ke) carboxy groups of the pectin substances of mint. The methods of isolating, purifying, and fractionating the pectin substances and determining their Kf and Ke values are given. Formulas are presented for calculating the percentage values of Kf and Ke.

Keywords

Carboxy Group Galacturonic Acid Ammonium Oxalate Titrimetric Method Acidic Polysaccharide 

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Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • S. P. Afanas'ev
  • É. P. Panova
  • G. N. Katseva
  • E. P. Kukhta
  • V. Ya. Chirva

There are no affiliations available

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