Table 2.
Separation of anodic and cathodic peaks for DMPC films spiked with MK-4, -7, and -9
| pH | Peak separation [mV] | ||
|---|---|---|---|
| MK-4 | MK-7 | MK-9 | |
| 4.0 | 8 (± 2) | 10 (± 2) | 10 (± 2) |
| 6.0 | 22 (± 11) | 22 (± 4) | 23 (± 6) |
| 7.4 | 18 (± 7) | 26 (± 2) | 33 (± 0) |
| 9.0 | 15 (± 2) | 23 (± 8) | 14 (± 2) |
| 11.0 | 10 (± 2) | 6 (± 2) | 10 (± 2) |
| 12.0 | 4 (± 3) | 4 (± 0) | 8 (± 4) |
| 12.4 | 8 (± 0) | 5 (± 2) | 8 (± 0) |
| 13.0 | 11 (± 2) | 3 (± 5) | 4 (± 0) |
| 14.0 | 6 (± 4) | 6 (± 4) | 8 (± 0) |
The film composition was 300 µmol DMPC + 2 µmol menaquinones. The scan rate was 10 mV s−1. In brackets, the standard deviations are given, which are based on at least three measurements