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. 2016 Mar 5;9(3):170. doi: 10.3390/ma9030170

Table 2.

MIC of the SiO2-gentamicin nanohybrids, native SiO2 NPs and free gentamicin.

Tested Materials MIC (µg/mL)
B. subtilis P. fluorescens E. coli
Native SiO2 NPs - - -
SiO2-gentamicin nanohybrids 250 * 250 * 250 *
Free gentamicin 0.98 3.91 to 15.63 3.91 to 15.63

Notes: (-) indicates that the tested material did not inhibit the bacterial growth. (*) represents that this concentration of the SiO2-gentamicin nanohybrids released 6.26 µg/mL gentamicin that inhibited the bacterial growth. () indicates that the MIC of the free gentamicin is within this range (3.91 to 15.63) as the tested concentrations were widely separated.