DNA absorbance was measured at 260 nm (A260) to evaluate the quantity of the extracted DNA, and the ratio of the absorbance at 260 nm to that at 280 nm (A260/280) was used to evaluate the DNA quality. This method was employed previously by other researchers to compare different DNA extraction methods[30,31].
In this study, the results of the concentration and the purity for each method were correlated. The SDSS and SDS methods seemed to yield a greater quantity of DNA, but their A260/280 ratio indicated a high protein contamination. On the other hand, the concentrations of the DNA obtained using the C and FDK methods were lower, but the A260/280 ratio showed a high purity of the DNA obtained. When applied to engorged individuals, the C method resulted in 100% successful DNA amplification that was similar to the FDK method. In our study, the C method provided the best results with a Cs close to 92.1% when compared with the FDK method.