TABLE 3.
Relative visibility Irel of all observed signals shown in given spectral ranges
| Signal | T (K) | Relative Visibility Irel (%) | ||
| LDL | HDL2 | HDL3 | ||
| CH2/CH3 region (0.1–3.0 ppm) | 283 | 14.1 | 34.3 | 55.9 |
| 293 | 21.9 | 44.4 | 65.2 | |
| 303 | 36.3 | 53.9 | 73.8 | |
| 313 | 42.4 | 58.4 | 78.6 | |
| 323 | 45.1 | 61.3 | 82.0 | |
| Total cholesterol C-18H3 (0.62–0.78 ppm) | 283 | 14.3 | 40.0 | 72.0 |
| 293 | 19.4 | 50.4 | 77.7 | |
| 303 | 32.3 | 57.8 | 84.9 | |
| 313 | 38.6 | 61.8 | 89.8 | |
| 323 | 41.8 | 64.4 | 94.2 | |
| CH3 FAs (0.7–1.0 ppm) | 283 | 21.3 | 35.3 | 51.9 |
| 293 | 38.1 | 50.0 | 70.1 | |
| 303 | 64.1 | 63.7 | 79.5 | |
| 313 | 73.1 | 70.1 | 86.9 | |
| 323 | 76.2 | 73.7 | 91.7 | |
| Bis-allylic-methylene (2.6–2.8 ppm) | 283 | 6.2 | 23.0 | 41.4 |
| 293 | 13.9 | 35.6 | 56.2 | |
| 303 | 36.1 | 44.8 | 71.4 | |
| 313 | 40.4 | 52.3 | 76.8 | |
| 323 | 43.1 | 55.1 | 82.6 | |
| Choline N+(CH3)3 (3.0–3.4 ppm) | 283 | 26.2 | 53.9 | 66.7 |
| 293 | 29.1 | 62.3 | 71.5 | |
| 303 | 38.1 | 70.1 | 77.5 | |
| 313 | 42.8 | 74.7 | 87.1 | |
| 323 | 46.4 | 77.6 | 89.2 | |
The relative visibilities Irel are calculated from the normalized individual peak areas in the lipoprotein spectra ILP divided by the corresponding peak areas Ilipid of the extracted lipids. The given values are the average of the two samples of the same healthy donor. The ppm values given correspond to the approximate limits of the peaks in native lipoprotein preparations. The error estimated from the two parallel estimations is about 5%. The intensity of the noncholesterol methyl groups is obtained as described in Materials and Methods. Bold type indicates the recommended experimental temperature.