TABLE 2.
Species | Isolate |
D values for the following spectral ranges (cm−1):
|
|||||
---|---|---|---|---|---|---|---|
Before shearing
|
After shearing and centrifugation
|
||||||
3,000-2,800 | 1,500-1,300 | 1,200-900 | 3,000-2,800 | 1,500-1,300 | 1,200-900 | ||
B. cenocepacia | 57 (HNLP) | 2.13 ± 1.62 | 6.19 ± 5.30 | 25.0 ± 23.2 | 0.75 ± 0.43 | 0.93 ± 0.66 | 1.94 ± 1.07 |
69 (HNLP) | 2.71 ± 1.03 | 6.35 ± 5.29 | 30.1 ± 28.7 | 1.11 ± 1.07 | 1.82 ± 1.55 | 2.75 ± 0.66 | |
15 (HST) | 1.94 ± 1.29 | 7.62 ± 6.64 | 13.2 ± 10.9 | 0.89 ± 068 | 0.95 ± 1.06 | 1.70 ± 0.88 | |
P. aeruginosa | R2 (HST) | 2.73 ± 1.96 | 8.36 ± 7.19 | 35.9 ± 40.2 | 1.20 ± 0.95 | 2.19 ± 1.07 | 3.43 ± 1.95 |
S. maltophilia | 50428 (HST) | 1.82 ± 1.69 | 10.12 ± 9.6 | 20.3 ± 23.2 | 0.31 ± 0.9 | 1.85 ± 1.34 | 2.99 ± 1.98 |
35668 (HST) | 1.9 ± 1.83 | 9.73 ± 8.25 | 15.3 ± 12.9 | 0.60 ± 0.40 | 0.96 ± 0.57 | 2.8 ± 2.1 |
D values were calculated (36) for the B. cenocepacia clinical isolates before and after shearing in the spectral regions 1,200 to 900 cm−1 (assigned to carbohydrates), 1,500 to 1,300 cm−1 (mixed region), and 3,000 to 2,800 cm−1 (C—H stretching of >CH2 and —CH3). D values corresponding to one P. aeruginosa clinical isolate (isolate R2) and two S. maltophilia clinical isolates (isolates 50428 and 35668) are shown as examples of the typical D values obtained for genera other than Burkholderia. HNLP, Hospital de Niños La Plata, La Plata, Argentina; HST, Hospital Santa Trinidad, Córdoba, Argentina.