Table 1.
The linear equations of five main ustilaginoidins by HPLC analysis.
| Ustilaginoidin | Retention Time (min) | Linear equation Y = aX + b | Correlation coefficient (R2) |
|---|---|---|---|
| Ustilaginoidin A (1) | 30.32 | Y = 6156397.5754 X − 33957.4836 | 0.9995 |
| Ustilaginoidin G (2) | 29.39 | Y = 6279322.9760 X − 7659.1240 | 0.9985 |
| Ustilaginoidin B (3) | 22.82 | Y = 7087462.4058 X + 263979.1177 | 0.9996 |
| Ustilaginlodin I (4) | 19.67 | Y = 4858545.7034 X + 128004.6527 | 0.9986 |
| Ustilaginoidin C (5) | 13.10 | Y = 6189302.6749 X + 35291.4332 | 0.9993 |
Y is the peak area, X is the quantity (μg) of the sample injected each time, and R2 is the correlation coefficient.