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Enzyme assay with DNS: Difference between revisions

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== Method Overview ==
== Method Overview ==


This enzyme assay measures polysaccharide hydrolysis by time course incubation with DNS (2,4-dinitrophenylsulfonyl-group) <ref name="Kim2014">Kim et al. (2014). Effective Microwell Plate-Based Screening Method for Microbes Producing Cellulase and Xylanase and Its Application. ''Journal of Microbiology and Biotechnology'', 24(11), 1559-1565. https://doi.org/10.4014/jmb.1405.05052</ref>.
This enzyme assay measures polysaccharide hydrolysis by time course incubation with DNS (3,5-dinitrosalicylic acid) <ref name="Kim2014">Kim et al. (2014). Effective Microwell Plate-Based Screening Method for Microbes Producing Cellulase and Xylanase and Its Application. ''Journal of Microbiology and Biotechnology'', 24(11), 1559-1565. https://doi.org/10.4014/jmb.1405.05052</ref>.


The assay is performed on bulk samples.
The assay is performed on bulk samples.

Latest revision as of 11:39, 11 May 2026

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Polysaccharide hydrolysis
Approach: enzyme assay
Context: incubation, lab
Spatial scale: low
Temporal scale: low; hours to days
Units: mol mL-1 substrate h-1
Community captured: heterotrophs
Co-measurements: cell abundance

Method Overview

This enzyme assay measures polysaccharide hydrolysis by time course incubation with DNS (3,5-dinitrosalicylic acid) [1].

The assay is performed on bulk samples.

Scale of measurement

Data generated

Units & currency

Units are mol mL-1 substrate h-1. The currency is carbon.

Sample size

Typical samples are < 1 L in volume.

Repositories & databases

Limitations

Reports potential rates (Vmax) and bottle effects can occur during incubation period.

Example Applications & Protocols

Classic examples

  • Kim et al. (2014) Effective Microwell Plate-Based Screening Method for Microbes Producing Cellulase and Xylanase and Its Application [1]

Recent applications

Common calculations/conversions

References

  1. 1.0 1.1 Kim et al. (2014). Effective Microwell Plate-Based Screening Method for Microbes Producing Cellulase and Xylanase and Its Application. Journal of Microbiology and Biotechnology, 24(11), 1559-1565. https://doi.org/10.4014/jmb.1405.05052