Characterization of oligogalacturonide mixtures bioactive

Authors

  • Yuliem Mederos-Torres
  • Josefa Hormaza-Montenegro
  • Ines Reynaldo-Escobar
  • Raquel Montesino-Sequi

Abstract

Oligogalacturonides are pectic oligosaccharides composed of lineal chains of D-galacturonic acid, linked
by α (1-4) glycosidic linkage. Oligogalacturonides' mixtures are obtained by enzymatic hidrolysis of pectins of diverse
vegetal species. These oligosaccharides unchain a diverse biological activity in plants, which depends mainly on their
polymerization degrees. The National Institute of Agricultural Science has a patent technology at national scale that
lets to obtain a mixture of oligogalacturonides with different polymerization degree. In this work is presented the characterization
of oligogalacturonides by spectrophotometric analysis attending to their uronic acids, reductor sugars, and
neutral sugars content. Also the chromatographic profile of samples in study is obtained, using the derivatization with
2-aminobenzamide label and the separation by high pH anion exchange chromatography. It is achieved the separation
of at least eigth galacturonic acid oligomers with a variable degree of polymerization. On the other hand, the analysis by
Fourier transform-infrared spectroscopy (FT-IR) showed that mixtures were composed by galacturonic acid salts. Results
indicated that starting from two pectic acids with different characteristics, mixtures of oligogalacturonides of similar
chemical composition could be obtained, but they differ in the proportion that they are presented.

Published

2020-10-19

How to Cite

Mederos-Torres, Y. ., Hormaza-Montenegro, J. ., Reynaldo-Escobar, I. ., & Montesino-Sequi, R. . (2020). Characterization of oligogalacturonide mixtures bioactive. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 42(2-3), 001-005. Retrieved from https://revista.cnic.cu/index.php/RevQuim/article/view/547

Issue

Section

Research articles