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Related Experiment Video

Updated: May 6, 2026

OLIgo Mass Profiling OLIMP of Extracellular Polysaccharides

OLIgo Mass Profiling OLIMP of Extracellular Polysaccharides

Published on: June 20, 2010

Polysaccharide quantification using microbial enzyme cocktails.

Sammy Pontrelli^1,2,3, Uwe Sauer¹

¹Institute of Molecular Systems Biology, ETH Zürich, Zürich, Switzerland.

Biology Methods & Protocols

|March 6, 2025

Summary

This summary is machine-generated.

This study introduces a novel method for polysaccharide quantification using enzyme cocktails from microbes. This approach effectively measures chitin and laminarin, overcoming limitations of traditional chemical hydrolysis methods.

Keywords:

chitin enzyme assay laminarin polysaccharide

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Last Updated: May 6, 2026

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Area of Science:

Biochemistry
Microbiology
Analytical Chemistry

Background:

Polysaccharide quantification is crucial for ecological and nutritional studies across various life forms.
Existing chemical hydrolysis methods have limitations and do not apply to all polysaccharide types.
Enzymatic degradation offers an alternative but often requires specific, characterized enzymes or microbial isolates.

Purpose of the Study:

To develop a versatile method for polysaccharide quantification using undefined enzyme cocktails.
To demonstrate the efficacy of this method with ecologically relevant polysaccharides like chitin and laminarin.
To explore the use of both individual microbial isolates and complex microbial communities as enzyme sources.

Main Methods:

Employed enzyme cocktails secreted by individual microbes (Psychromonas sp.) and complex environmental microbial communities.
Utilized colloidal chitin and laminarin as target polysaccharides.
Quantified degradation products using 3,5-dinitrosalicylic acid reducing sugar assay and liquid chromatography-mass spectrometry.

Main Results:

Successfully quantified colloidal chitin using an enzyme cocktail from Psychromonas sp., with detection limits of 62 mg/l (reducing sugar assay) and 15 mg/l (LC-MS).
Demonstrated the degradation of laminarin using enzyme cocktails from undefined microbial communities, achieving a detection limit of 30 mg/l (reducing sugar assay).
Validated the effectiveness of using both defined and undefined microbial enzyme sources for polysaccharide analysis.

Conclusions:

The developed method offers a versatile approach to polysaccharide quantification, applicable to various polysaccharides and microbial sources.
Leveraging enzyme cocktails from undefined microbial communities expands the applicability and accessibility of enzymatic hydrolysis methods.
This advancement provides a valuable tool for monitoring microbial degradation and understanding polysaccharide-related ecological and nutritional processes.