Table 2.
Identification of discriminant nonvolatile compounds from PLS‐DA in different FVFs
| Compounds | Groups | RT (min) | VIP |
|---|---|---|---|
| Lactic acid | Acid | 5.85624 | 5.90699 |
| L‐proline | Amino | 11.46 | 2.68632 |
| Serine | Amino acid | 13.2255 | 2.06464 |
| Malic acid | Acid | 16.4154 | 7.04869 |
| L‐Aspartic acid | Amino | 17.1432 | 1.17399 |
| L‐Glutamic acid | Amino | 19.4152 | 2.31066 |
| Citric acid | Acid | 23.9255 | 11.8969 |
| D‐(‐)‐Fructose | Carbohydrate | 25.4055 | 5.69528 |
| D‐glucose | Carbohydrate | 25.6952 | 11.5235 |
| D‐mannitol | Carbohydrate | 26.3965 | 7.78231 |
FVFs: fruit and vegetable juices; PLS‐DA: partial least squares discriminant analysis; VIP: variable importance in the projection.