Nucleic acid extraction is crucial for PCR detection of pathogenic bacteria to ensure food safety. In this study. a new magnetic extraction method was developed using 3D printing and magnetic silica beads (MSBs) to extract the target DNA from a large volume of bacterial sample and combined with microfluidic PCR to determine the bacteria. After proteinase K was added into a bacterial s... https://toyscyclers.shop/product-category/toys/