Table 2.
Comparison of signal area ratio changes measured on 300 MHz and 60 MHz instruments. Increasing and decreasing signals highlighted in bold and italics respectively.
| Signal area ratios | ||||||
|---|---|---|---|---|---|---|
| Ethanol–water to ethanol | ||||||
| Compound | ppm range | August 18 | June 28 | |||
| 300 MHz | 60 MHz | 300 MHz | 60 MHz | 300 MHz | 60 MHz | |
| Rutin and lipids | 0.75–1.55 | 0.7–1.55 | 0.231 | 0.289 | 0.356 | 0.324 |
| Hyperforin | 1.6–1.8 | 1.57–1.92 | 0.223 | 0.307 | 0.439 | 0.286 |
| Beta-glucose | 4.51–4.57 | 4.44–4.66 | 1.328 | 1.602 | 1.437 | 1.853 |
| Chlorogenic acid | 6.24–6.31 | 6.16–6.34 | 1.295 | 1.627 | 1.356 | 1.780 |
| Flavonoid glycosides | 6.55–7.26 | 6.55–7.26 | 1.271 | 1.833 | 1.490 | 1.974 |
| 7.88–7.93 | 7.85–7.96 | 1.177 | 2.302 | 1.002 | 2.091 | |
| Correlation | 0.921988 | 0.905054 | ||||
| p-value | < 0.005 | < 0.005 | ||||