Related Experiment Video
Updated: Feb 1, 2026

The Cultivation, Growth, and Viability of Lactic Acid Bacteria: A Quality Control Perspective
Published on: June 16, 2022
Structural Analysis of Exopolysaccharides from Lactic Acid Bacteria
1Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands. g.gerwig@rug.nl.
Abstract:
Production of exopolysaccharides by lactic acid bacteria is a common phenomenon. Structural information of these widely diverse biopolymers is rendered by the monosaccharide composition, the anomeric configurations, the type of glycosidic linkages, the presence of repeating units and noncarbohydrate substituents, and finally the presentation of a chemical molecular structure or composite model. The detailed structural analysis of polysaccharides is a time-consuming pursuit, including the use of different techniques, such as chemical degradation methods (e.g., hydrolysis), separation methods (e.g., SEC-chromatography and HPLC/HPAEC), and identification methods (e.g., GLC-EIMS and 1H/13C NMR spectroscopy). In this chapter, some analytical methods are described and demonstrated for two different exopolysaccharides from lactic acid bacteria.
More Related Videos
12:02Automated Modular High Throughput Exopolysaccharide Screening Platform Coupled with Highly Sensitive Carbohydrate Fingerprint Analysis
Published on: April 11, 2016
10:23Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
Published on: August 23, 2024
Related Concept Videos
Acid Strength and Molecular Structure
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
Nucleic Acid Structure
DNA Structure
DNA...
Molecular Structure and Acidity
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
Structures of Carboxylic Acid Derivatives
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the unhybridized p...
The Roles of Bacteria and Fungi in Plant Nutrition
Structure of Lipids