Comparison of four DNA extraction kits efficiency for 16SrDNA microbiota profiling of diverse human samples.

DNA extraction is a major factor affecting the microbial profile of various samples. Considering that different kits are commonly used such as QIAamp PowerFecal Pro DNA kit (QPFPD, QIAGEN), Macherey Nucleospin Soil (MNS, MACHEREY-NAGEL) Macherey Nucleospin Tissue (MNT, MACHEREY-NAGEL) and MagnaPure LC DNA isolation kit III (MPLCD, ROCHE), this study aimed to assess their performance using high (feces) and low-biomass samples. The kits were equally effective for feces samples but not sensitive enough for low biomass samples (chyme, bronchoalveolar lavage fluid and sputum).