Table II. Precision and accuracy of S. aureus quantitative measurements. Three technical replicates were performed for n = 5 identical samples at two concentration levels. S.D. = standard deviation; % RSD = % relative standard deviation.
|
S. aureus Measurements (CFU ml−1) | ||||||
|---|---|---|---|---|---|---|
| Spike concentration (CFU ml−1) | Intra-peptide concentration (mean ± S.D.) (% RSD) | Inter-peptide concentration (mean ± S.D.) (% RSD) | Spike concentration (CFU ml−1) | Intra-peptide concentration (mean ± S.D.) (% RSD) | Inter-peptide concentration (mean ± S.D.) (% RSD) | |
| n = 5 | ||||||
| SIAQSIEK | 1.00 × 105 | 1.30 × 105 ± 1.16 × 104 (8.9) | 1.31 × 105 ± 1.73 × 103 (1.3) | 1.00 × 106 | 9.70 × 105 ± 1.04 × 105 (10.7) | 1.01 × 106 ± 1.16 × 104 (8.9) |
| LGVILPVTK | 1.00 × 105 | 1.33 × 105 ± 2.00 × 104 (15.0) | 1.00 × 106 | 1.02 × 106 ± 1.35 × 105 (13.2) | ||
| LIYGIPQLIEYK | 1.00 × 105 | 1.30 × 105 ± 1.70 × 104 (13.1) | 1.00 × 106 | 1.04 × 106 ± 1.53 × 105 (14.7) | ||