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Table 2 Comparison of quantification limits of six standard strains by two methods

From: The MBS microbial rapid detection system for rapid detection of major pathogenic bacteria in feed: comparison with plate counting method

Strainsa

Bacteria concentration

(cfu/mL)

PCM

(cfu/mL)

MBS

(cfu/mL)

E.coli

103

(3.94 ± 0.31) × 103

(3.77 ± 0.76) × 103

102

(3.99 ± 0.51) × 102

(4.46 ± 1.17) × 102

101

(4.13 ± 0.15) × 10

(3.96 ± 0.65) × 10

100

0

5.58 ± 0.49

Sal

103

(2.32 ± 0.35) × 103

(1.80 ± 0.26) × 103

102

(4.27 ± 2.06) × 102

(2.17 ± 0.28) × 102

101

(5.67 ± 0.35) × 10

(4.97 ± 6.05) × 10

100

0

8.60 ± 0.85

S.aureus

103

(1.55 ± 0.06) × 103

(1.74 ± 0.30) × 103

102

(1.59 ± 0.05) × 102

(1.85 ± 0.25) × 102

101

(3.90 ± 0.30) × 10

(6.27 ± 0.47) × 10

100

0

7.90 ± 1.93

Listeria

103

(3.70 ± 0.14) × 103

(3.73 ± 0.96) × 103

102

(4.31 ± 0.16) × 102

(3.96 ± 0.19) × 102

101

(5.60 ± 0.65) × 10

(3.80 ± 3.00) × 10

100

0

8.40 ± 1.08

COLI

103

(3.34 ± 0.15) × 103

(4.51 ± 0.42) × 103

102

(3.67 ± 0.15) × 102

(3.20 ± 0.12) × 102

101

(4.00 ± 0.50) × 10

(3.80 ± 0.40) × 10

100

0

3.93 ± 0.75

TVC

103

(2.36 ± 0.96) × 103

(3.74 ± 0.67) × 103

102

(3.19 ± 0.05) × 102

(2.59 ± 0.04) × 102

101

(4.80 ± 0.66) × 10

(5.70 ± 0.80) × 101

100

0

7.43 ± 0.18

  1. aE. coli Escherichia coli, Sal, Salmonella, S. aureus Staphylococcus aureus, Listeria Listeria monocytogenes, COLI Coliforms, TVC Total viable count