Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Mapping sugar beet pectin acetylation pattern.

Marie-Christine Ralet1, Juan Carlos Cabrera, Estelle Bonnin

  • 1Unité Biopolymères, Interactions, Assemblages, INRA, Rue de la Géraudière, B.P. 71627, F-44316 Nantes Cedex 3, France. ralet@nantes.inra.fr

Phytochemistry
|July 19, 2005
PubMed
Summary

Researchers characterized sugar beet pectin, isolating homogalacturonan-derived oligogalacturonates. These compounds, partly methylated and acetylated, reveal insights into pectin structure and esterification patterns.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Degradation of macrolide antibiotics in wastewater and soil by different advanced oxidation technologies.

Journal of environmental management·2025
Same author

Green manure from cover crops enhances pesticide degradation and soil biological health.

Journal of hazardous materials·2025
Same author

Probing the colloidal behavior of a cell wall polysaccharides-degrading enzyme in a highly constrained model system.

Journal of colloid and interface science·2025
Same author

Application of advance oxidation processes for elimination of carbamazepine residues in soils.

Journal of environmental management·2024
Same author

A time-course analysis of <i>Aspergillus terreus</i> secretomes reveals the importance of pectin-degrading enzymes to increase the digestibility of soybean meal.

Applied and environmental microbiology·2024
Same author

Author Correction: Rapid alkalinization factor 22 has a structural and signalling role in root hair cell wall assembly.

Nature plants·2024

Area of Science:

  • Carbohydrate Chemistry
  • Plant Biochemistry

Background:

  • Sugar beet pectin is a complex polysaccharide with homogalacturonan regions.
  • Understanding the structure of pectin, particularly its esterification patterns, is crucial for its applications.

Purpose of the Study:

  • To isolate and characterize partly methylated and/or acetylated oligogalacturonates from sugar beet pectin.
  • To determine the distribution and patterns of methyl and acetyl esterification within homogalacturonan domains.

Main Methods:

  • Enzymatic hydrolysis of sugar beet pectin using endo-polygalacturonase, pectin methyl esterase, and side-chain degrading enzymes.
  • Purification of oligogalacturonates via anion-exchange and size exclusion chromatography.
  • Structural elucidation using electrospray ionization ion trap mass spectrometry (ESI-IT-MSn).

Related Experiment Videos

Main Results:

  • Successfully recovered ~90% of GalA and ~75% of acetyl groups as homogalacturonan-derived oligogalacturonates.
  • Identified partly methylated and/or acetylated oligogalacturonates (degree of polymerization 5) comprising ~50% of acetyl groups in sugar beet homogalacturonans.
  • Detected 2-O-acetyl- and 3-O-acetyl-GalA in similar amounts, with absence of 2,3-di-O-acetylation; methyl-esterified GalA residues primarily occurred upstream of 2-O-acetyl GalA.
  • Found limited amounts of co-methylated and acetylated GalA residues, suggesting unsubstituted GalA residues constitute ~10% of total GalA.

Conclusions:

  • The study provides a detailed characterization of esterification patterns in sugar beet homogalacturonans.
  • A tentative mapping of acetyl and methyl ester distribution suggests limited co-esterification on individual GalA residues.
  • The findings contribute to a deeper understanding of pectin structure-function relationships.