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Related Concept Videos

DNA Isolation01:24

DNA Isolation

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DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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Related Experiment Video

Updated: Jul 5, 2025

A Hybrid DNA Extraction Method for the Qualitative and Quantitative Assessment of Bacterial Communities from Poultry Production Samples
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Improved sampling and DNA extraction procedures for microbiome analysis in food-processing environments.

Coral Barcenilla1, José F Cobo-Díaz1, Francesca De Filippis2,3

  • 1Department of Food Hygiene and Technology and Institute of Food Science and Technology, Universidad de León, León, Spain.

Nature Protocols
|January 24, 2024
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Summary
This summary is machine-generated.

This study presents a new workflow for whole-metagenome sequencing (WMS) of food environments. The optimized protocol enhances DNA recovery, enabling detailed microbiome analysis and metagenome-assembled genomes (MAGs) from low-biomass samples.

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Area of Science:

  • Microbiology
  • Environmental Science
  • Food Science

Background:

  • Whole-metagenome sequencing (WMS) offers insights into food environment microbiomes.
  • Low DNA yield from low-biomass samples in food processing environments is a major challenge for WMS.
  • Existing WMS protocols are not optimized for food processing environments, limiting microbiome analysis.

Purpose of the Study:

  • To develop and validate a complete workflow for high-quality WMS from food production and processing environments.
  • To optimize DNA purification methods for low-biomass samples.
  • To enable the reconstruction of metagenome-assembled genomes (MAGs) for comprehensive microbiome characterization.

Main Methods:

  • Development of an optimized DNA purification methodology.
  • Application of the workflow to samples from food production and processing environments.
  • Whole-metagenome sequencing (WMS) and bioinformatics analysis for MAG reconstruction.

Main Results:

  • The workflow yields >10 ng DNA in >98% of samples and >500 ng in 57.1% of samples.
  • An average of 12.2 MAGs per sample were reconstructed, with up to 62 MAGs in a single sample.
  • The protocol significantly outperforms previous methods, which yielded <2 MAGs per sample.

Conclusions:

  • The presented workflow successfully addresses DNA recovery challenges in food processing environments.
  • This method enables robust microbiome analysis and MAG reconstruction, advancing environmental monitoring.
  • The protocol, developed within the EU MASTER project, is applicable across diverse food production sectors.