Table 2.
Linear regression to quantify glycoalkaloids.
| Compounds | Linear range | Linear coefficient (a) | Angular coefficient (b) | Correlation coefficient (r) |
|---|---|---|---|---|
| SN | 0.77–990.00 | 5603.2 | 9026.0 | 0.9996 |
| SM | 0.78–1000.00 | 6433.3 | 9204.0 | 0.9996 |
| IS | 1.62–12.50 | 97525.0 | 1227.3 | 0.9998 |
| SS | 24.75–990.00 | 7996.1 | 8856.7 | 0.9992 |
Analysis with a regression equation of y = ax + b, in which x is the concentration in μg mL−1, y is the peak area, a is angular coefficient, and b is linear coefficient. SN: solasonine, SM: solamargine, IS: internal standard (veratraldehyde), and SS: secondary standard (solanine).