Preparation of immunomagnetic iron-dextran nanoparticles and application in rapid isolation of E.coli O157:H7 from foods

Table 3 Effect of amount of nanoparticles on recovery (n = 5, mean±SD).

Amount of nanoparticles (µL)	Colony forming unit (CFU/mL)	Recovery1 (%)
5	88.60±4.93	92.29±5.13
10	87.60±4.04	91.25±4.21
15	88.20±6.06	91.88±6.31
20	88.40±4.04	92.08±4.21
25	90.20±4.32	93.96±4.50
30	89.00±5.61	92.71±5.85

¹There were 96 CFU/mL in the dilution (mean of five samples).