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Related Concept Videos

DNA Isolation01:24

DNA Isolation

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...
DNA Isolation01:34

DNA Isolation

DNA from cells is required for many biotechnology and research applications, such as molecular cloning. To remove and purify DNA from cells, researchers use various methods of DNA extraction. While the specifics of different protocols may vary, some general concepts underlie the process of DNA extraction.

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Related Experiment Video

Updated: Jun 11, 2026

Extraction of High Molecular Weight Genomic DNA from Soils and Sediments
11:24

Extraction of High Molecular Weight Genomic DNA from Soils and Sediments

Published on: November 10, 2009

A developed DNA extraction method for different soil samples.

Yingchang Hu1, Zhiheng Liu, Jianfang Yan

  • 1Plant Protection College, Shenyang Agriculture University, Shenyang, China.

Journal of Basic Microbiology
|June 30, 2010
PubMed
Summary
This summary is machine-generated.

The alkaline lysis method (IV) is a novel, reliable, and versatile technique for large-scale soil DNA extraction, yielding high DNA amounts and superior quality. This method is recommended for its efficiency and effectiveness in various soil sample types.

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A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

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Last Updated: Jun 11, 2026

Extraction of High Molecular Weight Genomic DNA from Soils and Sediments
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A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples
17:39

A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

Published on: July 16, 2017

Area of Science:

  • Environmental microbiology
  • Molecular biology
  • Biotechnology

Background:

  • Efficient DNA extraction from soil is crucial for microbial community analysis.
  • Existing methods vary in yield, purity, and integrity of extracted DNA.
  • Optimization of DNA extraction protocols is essential for accurate downstream applications.

Purpose of the Study:

  • To evaluate and compare four DNA extraction methods for soil samples.
  • To determine the optimal method for high yield, quality, and integrity of soil DNA.
  • To assess the suitability of extracted DNA for Polymerase Chain Reaction (PCR).

Main Methods:

  • Comparison of SDS-hyperhaline (I), modified SDS-hyperhaline (II), indirect (III), and alkaline lysis (IV) methods.
  • Evaluation of DNA yield, spectrophotometric quality, and genomic integrity using Pulsed-Field Gel Electrophoresis (PFGE).
  • Assessment of PCR suitability for DNA extracted by each method.

Main Results:

  • Methods I, II, and IV yielded high DNA amounts.
  • Methods III and IV provided higher DNA quality.
  • Method IV demonstrated the best genomic integrity and was optimal for PCR.
  • Approximately 6.0 μg of DNA was recovered per 1.0 g of soil using method IV.

Conclusions:

  • The alkaline lysis method (IV) is a novel, reliable, and versatile technique for large-scale soil DNA extraction.
  • Method IV offers a balance of high yield, superior DNA quality, and genomic integrity.
  • This method involves fewer purification steps, making it efficient for diverse soil samples.