Table 2.
Descriptive analysis of organic acids content (g/kg dw) in Norwegian apple samples from the NIBIO Ullensvang area (no. 1–74) and from Njøs (no. 75–103) during 2-year harvesting.
| Norwegian area | NIBIO Ullensvang area | Njøs | ||||||
|---|---|---|---|---|---|---|---|---|
| Parameter | Min | Max | Mean | SD | Min | Max | Mean | SD |
| Citric | 6.89 | 30.17 | 14.77 | 5.96 | 1.70 | 16.19 | 3.34 | 2.83 |
| Maleic | 4.74 | 56.23 | 16.55 | 10.77 | 2.22 | 10.80 | 4.77 | 2.09 |
| Malic | 15.72 | 102.30 | 45.68 | 19.14 | 6.89 | 46.08 | 17.10 | 8.58 |
| Pyruvic | 0.11 | 2.54 | 1.22 | 0.49 | 0.71 | 2.02 | 1.19 | 0.33 |
| Shikimic | 0.02 | 1.57 | 0.36 | 0.26 | 0.02 | 1.59 | 0.17 | 0.36 |
| Lactic | 0.42 | 2.68 | 1.01 | 0.43 | 0.74 | 2.34 | 1.48 | 0.35 |
| Propionic | 0.18 | 4.50 | 1.44 | 0.92 | 0.55 | 3.09 | 1.29 | 0.57 |
| Butiric | 0.52 | 2.85 | 1.15 | 0.57 | 0.06 | 2.03 | 0.43 | 0.60 |
| Quinic | 0.84 | 24.26 | 3.70 | 3.71 | 0.32 | 5.89 | 1.42 | 1.24 |
| Oxalic | 0.91 | 10.18 | 3.59 | 2.24 | 0.32 | 8.21 | 2.57 | 1.86 |
| Fumaric | 0.64 | 2.49 | 1.37 | 0.46 | 0.95 | 3.96 | 2.03 | 0.80 |