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Table 2 MIC, MIC50, MIC90 and MBC for MDR (n = 56) and antimicrobial susceptible microorganisms (n = 34)

From: Comparison of methods to detect the in vitro activity of silver nanoparticles (AgNP) against multidrug resistant bacteria

Microorganism

Citrate

Chitosan

PVA

Ag Sulfadiazin

Ag Nitrate

Commercial AgNPs

MIC

MBC

MIC

MBC

MIC

MBC

MIC

MBC

MIC

MBC

MIC

MBC

A. baumannii MDR (A1)

3.4

13.5

6.7

6.7

≥54

≥54

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A2)

3.4

3.4

6.7

6.7

27

27

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A3)

3.4

13.5

6.7

6.7

13.5

13.5

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A4)

3.4

13.5

6.7

6.7

≥54

≥54

13.5

13.5

3.4

3.4

≥10

≥10

A. baumannii MDR (A5)

3.4

13.5

6.7

6.7

13.5

13.5

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A6)

3.4

13.5

6.7

6.7

13.5

13.5

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A7)

3.4

27

6.7

6.7

13.5

27

6.7

13.5

3.4

13.5

≥10

≥10

A. baumannii MDR (A8)

3.4

27

6.7

27

13.5

13.5

6.7

13.5

3.4

13.5

≥10

≥10

A. baumannii MDR (A9)

3.4

27

6.7

6.7

13.5

13.5

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A10)

3.4

3.4

6.7

6.7

13.5

13.5

13.5

13.5

3.4

3.4

≥10

≥10

A. baumannii MDR (A11)

3.4

13.5

6.7

6.7

13.5

27

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii MDR (A12)

3.4

3.4

6.7

6.7

27

27

13.5

13.5

3.4

3.4

≥10

≥10

MIC50 A. baumannii MDR

3.4

–

6.7

–

13.5

–

6.7

–

3.4

–

≥10

–

MIC90 A. baumannii MDR

3.4

–

6.7

–

≥54

–

13.5

–

3.4

–

≥10

–

A. baumannii S (AS1)

3.4

3.4

3.4

6.7

6.7

13.5

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii S (AS2)

1.6

3.4

1.6

1.6

6.7

13.5

6.7

13.5

3.4

3.4

≥10

≥10

A. baumannii S (AS3)

3.4

3.4

3.4

3.4

6.7

13.5

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii S (AS4)

3.4

3.4

3.4

3.4

27

27

6.7

6.7

3.4

3.4

≥10

≥10

A. baumannii S (AS5)

3.4

3.4

3.4

6.7

≥54

≥54

6.7

6.7

3.4

3.4

≥10

≥10

MIC50 A. baumannii S

3.4

–

3.4

–

6.7

–

6.7

–

3.4

–

≥10

–

MIC90 A. baumannii S

3.4

–

3.4

–

≥54

–

6.7

–

3.4

–

≥10

–

S. maltophilia MDR (MO9)

1.6

13.5

6.7

6.7

≥54

≥54

6.7

6.7

3.4

3.4

≥10

≥10

S. maltophilia MDR (MO11)

1.6

3.4

6.7

6.7

≥54

≥54

6.7

6.7

6.7

6.7

≥10

≥10

MIC50 S. maltophilia MDR

1.6

–

6.7

–

≥54

–

6.7

–

3.4

–

≥10

–

MIC90 S. maltophilia MDR

1.6

–

6.7

–

≥54

–

6.7

–

6.7

–

≥10

–

P. aeruginosa MDR (P1)

3.4

3.4

6.7

13.5

27

≥54

6.7

6.7

1.6

1.6

≥10

≥10

P. aeruginosa MDR (P2)

3.4

6.7

6.7

13.5

13.5

27

13.5

13.5

3.4

6.7

≥10

≥10

P. aeruginosa MDR (P3)

3.4

3.4

6.7

13.5

13.5

27

13.5

13.5

3.4

3.4

≥10

≥10

P. aeruginosa MDR (P4)

3.4

13.5

6.7

13.5

13.5

≥54

13.5

13.5

6.7

≥27

≥10

≥10

P. aeruginosa MDR (P5)

3.4

3.4

6.7

13.5

13.5

27

6.7

6.7

3.4

6.7

≥10

≥10

MIC50 P. aeruginosa MDR

3.4

–

6.7

–

13.5

–

13.5

–

3.4

–

≥10

–

MIC90 P. aeruginosa MDR

3.4

–

6.7

–

27

–

13.5

–

6.7

–

≥10

–

P. aeruginosa S (PS1)

3.4

34

6.7

13.5

13.5

13.5

6.7

6.7

3.4

13.5

≥10

≥10

P. aeruginosa S (PS2)

3.4

3.4

6.7

6.7

13.5

≥54

13.5

13.5

6.7

13.5

≥10

≥10

P. aeruginosa S (PS3)

3.4

1.6

3.4

3.4

≥54

≥54

13.5

13.5

6.7

6.7

≥10

≥10

P. aeruginosa S (PS4)

1.6

1.6

3.4

6.7

13.5

13.5

3.4

13.5

1.6

3.4

≥10

≥10

P. aeruginosa S (PS5)

1.6

3.4

6.7

13.5

13.5

27

6.7

6.7

3.4

3.4

≥10

≥10

P. aeruginosa S (PS6)

1.6

3.4

6.7

13.5

6.7

≥54

6.7

13.5

3.4

3.4

≥10

≥10

P. aeruginosa S (PS7)

1.6

3.4

3.4

13.5

6.7

13.5

13.5

13.5

6.7

6.7

≥10

≥10

P. aeruginosa ATCC 27853 S (MO18)

3.4

6.7

13.5

13.5

13.5

≥54

6.7

6.7

3.4

3.4

≥10

≥10

MIC50 P. aeruginosa S

1.6

–

6.7

–

13.5

–

6.7

–

3.4

–

≥10

–

MIC90 P. aeruginosa S

3.4

–

13.5

–

≥54

–

13.5

–

6.7

–

≥10

–

Enterobacteriaceae MDR (K1)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

13.5

6.7

≥27

≥10

≥10

Enterobacteriaceae MDR (K2)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K3)

6.7

13.5

6.7

6.7

13.5

≥54

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K4)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K5)

6.7

6.7

6.7

6.7

27

≥54

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K6)

6.7

13.5

6.7

6.7

27

≥54

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K7)

6.7

6.7

6.7

6.7

27

27

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K9)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae MDR (K14)

6.7

27

6.7

13.5

≥54

≥54

13.5

13.5

6.7

≥27

≥10

≥10

Enterobacteriaceae MDR (MO13)

3.3

3.3

3.3

3.3

13.5

13.5

13.5

13.5

6.7

≥27

≥10

≥10

Enterobacteriaceae MDR (MO8)

3.3

13.5

6.7

6.7

≥54

≥54

13.5

13.5

3.4

3.4

≥10

≥10

Enterobacteriaceae MDR (MO10)

3.3

3.3

6.7

6.7

≥54

≥54

13.5

13.5

6.7

6.7

≥10

≥10

MIC50 Enterobacteriaceae MDR

6.7

–

6.7

–

≥54

–

13.5

–

6.7

–

≥10

–

MIC90 Enterobacteriaceae MDR

6.7

–

6.7

–

≥54

–

13.5

–

6.7

–

≥10

–

Enterobacteriaceae S (ENB1)

3.4

3.4

6.7

6.7

27

27

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae S (ENB2)

6.7

6.7

3.4

6.7

≥54

≥54

13.5

13.5

13.5

13.5

≥10

≥10

Enterobacteriaceae S (ENB3)

3.4

3.4

3.4

3.4

13.5

13.5

13.5

13.5

3.4

6.7

≥10

≥10

Enterobacteriaceae S (ENB4)

6.7

6.7

3.4

6.7

27

27

13.5

13.5

6.7

≥27

≥10

≥10

Enterobacteriaceae S (ENB5)

6.7

6.7

6.7

6.7

27

27

13.5

≥27

6.7

6.7

≥10

≥10

Enterobacteriaceae S (ENB6)

6.7

6.7

6.7

6.7

27

27

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae S (ENB7)

6.7

6.7

3.4

3.4

13.5

13.5

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae S (ENB8)

3.4

3.4

3.4

3.4

13.5

27

13.5

13.5

6.7

6.7

≥10

≥10

Enterobacteriaceae S (ENB9)

3.4

27

3.4

3.4

≥54

≥54

13.5

13.5

6.7

6.7

≥10

≥10

MIC50 Enterobacteriaceae S

6.7

–

3.4

–

27

–

13.5

–

6.7

–

≥10

–

MIC90 Enterobacteriaceae S

6.7

–

6.7

–

≥54

–

13.5

–

13.5

–

≥10

–

S. aureus MRSA (S1)

6.7

6.7

3.4

27

≥54

≥54

13.5

13.5

13.5

≥27

≥10

≥10

S. aureus MRSA (S2)

6.7

13.5

3.4

6.7

≥54

≥54

≥27

≥27

13.5

≥27

≥10

≥10

S. aureus MRSA (S3)

6.7

13.5

3.4

3.4

≥54

≥54

≥27

≥27

13.5

≥27

≥10

≥10

S. aureus MRSA (S4)

6.7

13.5

3.4

3.4

≥54

≥54

≥27

≥27

13.5

≥27

≥10

≥10

S. aureus MRSA (S5)

6.7

13.5

3.4

3.4

≥54

≥54

13.5

13.5

13.5

13.5

≥10

≥10

S. aureus MRSA (S6)

6.7

13.5

3.4

27

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (S7)

6.7

13.5

3.4

3.4

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (S8)

6.7

13.5

3.4

3.4

27

27

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (MO1)

6.7

27

3.4

27

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (MO2)

6.7

13.5

3.4

3.4

≥54

≥54

13.5

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (MO3)

6.7

13.5

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (MO4)

6.7

13.5

6.7

27

≥54

≥54

≥27

≥27

13.5

≥27

≥10

≥10

S. aureus MRSA (MO5)

6.7

13.5

6.7

27

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (MO6)

13.5

27

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MRSA (MO7)

13.5

13.5

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

MIC50 S. aureus MRSA

6.7

–

3.4

–

≥54

–

≥27

–

13.5

–

≥10

–

MIC90 S. aureus MRSA

13.5

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

S. aureus MSSA (MSSA1)

13.5

27

6.7

27

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MSSA (MSSA2)

6.7

13.5

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MSSA (MSSA3)

6.7

13.5

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MSSA (MSSA4)

6.7

13.5

6.7

≥54

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MSSA (MSSA5)

6.7

13.5

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus MSSA (MSSA6)

6.7

13.5

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

S. aureus ATCC29213 (MO17)

13.5

27

3.4

6.7

≥54

≥54

≥27

≥27

13.5

≥27

≥10

≥10

S. epidermidis INCQS198 (MO16)

6.7

6.7

6.7

6.7

27

27

6.7

13.5

6.7

6.7

≥10

≥10

MIC50 S. aureus MSSA

6.7

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

MIC90 S. aureus MSSA

13.5

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

Enterococcus sp. VRE (V1)

6.7

27

6.7

27

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

Enterococcus sp. VRE (V2)

6.7

27

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

Enterococcus sp. VRE (V3)

6.7

27

6.7

6.7

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

Enterococcus sp. VRE (V4)

6.7

27

6.7

13.5

≥54

≥54

≥27

≥27

13.5

13.5

≥10

≥10

Enterococcus sp. VRE (V5)

6.7

27

6.7

13.5

27

≥54

≥27

≥27

13.5

13.5

≥10

≥10

Enterococcus sp. VRE (V6)

6.7

13.5

3.4

13.5

≥54

≥54

≥27

≥27

6.7

13.5

≥10

≥10

Enterococcus sp. VRE (V7)

6.7

27

3.4

6.7

27

≥54

≥27

≥27

6.7

13.5

≥10

≥10

Enterococcus sp. VRE (V8)

6.7

27

6.7

6.7

13.5

13.5

≥27

≥27

13.5

13.5

≥10

≥10

MIC50 Enterococcus sp. VRE

6.7

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

MIC90 Enterococcus sp. VRE

6.7

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

Enterococcus sp. VSE (VSE1)

6.7

27

6.7

13.5

27

≥54

≥27

≥27

≥27

≥27

≥10

≥10

Enterococcus sp. VSE (VSE2)

6.7

6.7

6.7

13.5

≥54

≥54

13.5

≥27

≥27

≥27

≥10

≥10

Enterococcus sp. VSE (VSE3)

13.5

13.5

3.4

3.4

≥54

≥54

≥27

≥27

≥27

≥27

≥10

≥10

Enterococcus sp. VSE (VSE4)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

13.5

13.5

13.5

≥10

≥10

Enterococcus sp. VSE (VSE5)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

13.5

13.5

13.5

≥10

≥10

Enterococcus sp. VSE (VSE6)

6.7

6.7

6.7

6.7

≥54

≥54

13.5

≥27

13.5

≥27

≥10

≥10

MIC50 Enterococcus sp. VSE

6.7

–

6.7

–

≥54

–

13.5

–

13.5

–

≥10

–

MIC90 Enterococcus sp. VSE

13.5

–

6.7

–

≥54

–

≥27

–

≥27

–

≥10

–

MDR (N = 54)

 MIC50 MDR

6.7

–

6.7

–

≥54

–

13.5

–

6.7

–

≥10

–

 MIC90 MDR

6.7

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

Susceptible (N = 36)

 MIC50 Susceptible

6.7

–

6.7

–

≥54

–

13.5

–

6.7

–

≥10

–

 MIC90 Susceptible

6.7

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

TOTAL (N = 90)

            

 MIC50

6.7

–

6.7

–

≥54

–

13.5

–

6.7

–

≥10

–

 MIC90

6.7

–

6.7

–

≥54

–

≥27

–

13.5

–

≥10

–

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Journal of Nanobiotechnology

ISSN: 1477-3155

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