Abstract

DNA extraction, playing an irreplaceable role in molecular biology as it is an essential step prior to various downstream biological analyses. Thus, the accuracy and reliability of downstream research outcomes depend largely on upstream DNA extraction methodology. However, with the advancement of downstream DNA detection techniques, the development of corresponding DNA extraction methods is lagging behind. The most innovative DNA extraction techniques are silica‐ or magnetic‐based. Recent studies have demonstrated that plant fiber‐based adsorbents (PF‐BAs) have stronger DNA capturing ability than classic materials. Moreover, magnetic ionic liquid (MIL)‐based DNA extraction has gathered attention lately, and extrachromosomal circular DNA (eccDNA), cell‐free DNA (cfDNA), and microbial community DNA are current research hotspots. These require specific extraction methods, along with constant improvements in the way they are used. This review discusses the significance as well as the direction of innovation of DNA extraction methods to try to provide valuable references including current status and trends for DNA extraction.