Figure 4

DNA isolation efficiency compared with commercialized kits. UV-vis absorbance spectra of isolated DNA (top), isolated DNA concentration (middle) and its absorbance ratios of 260 nm/280 nm (bottom) compared with (a) magnetic bead-based NAI kit (MagListo™ Kit) and (b) silica gel filter-based NAI kit (DNeasy Blood & Tissue Kit). Negative control: DNA isolation using poly(L-DOPA)-coated swab from cell brank solution.