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Shwani, Abdulkarim; Zuo, Bin; Alrubaye, Adnan; Zhao, Jiangchao; Rhoads, Douglas D.
Applied sciences, 01/2024, Letnik: 14, Številka: 1Journal Article
DNA extraction for downstream molecular diagnostic applications can be an expensive, time-consuming process. We devised a method to quickly extract total bacterial DNA from environmental samples based on the sodium hydroxide lysis of cells with or without capture by magnetic beads for subsequent PCR or quantitative PCR. The final DNA extraction method using NaOH is extremely low-cost and can be completed in as little as 10 min at room temperature with dilution, or the DNA can be further purified using silica-coated paramagnetic beads. NaOH extraction was effective for Gram-negative and Gram-positive bacteria in samples from air, soil, sewage, food, laboratory surfaces, and chicken cloacal swabs. The NaOH extraction method was comparable to commercial kits for extraction of DNA from pig fecal samples for 16S amplicon sequencing analyses. We demonstrated that an impinger and portable pump can efficiently capture bacteria from the air in poultry facilities for rapid NaOH extraction to quantify total bacteria and for detection of specific species using qPCR. The air sampling and NaOH extraction procedures are well suited for routine, high-throughput screening and for metagenomic analyses for specific pathogens, even in resource-limited situations.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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