Table 2.
Mechanical properties of the penetration test corresponding to 10 different commercial blueberries.
| Samples | Equatorial Diameter (mm) | Maximum Skin Breaking Force (N) | Displacement at Skin Breaking (mm) | Slope at Skin Breaking (N/mm) |
Skin Breaking Work (mJ) |
|---|---|---|---|---|---|
| 1 | 16.0 ± 1.8 a–c | 1.70 ± 0.37 c,d | 2.74 ± 0.64 f | 0.63 ± 0.15 b | 2.84 ± 1.00 d |
| 2 | 15.4 ± 1.8 a,b | 1.51 ± 0.23 b,c | 2.06 ± 0.32 b,c | 0.72 ± 0.12 b–d | 1.93 ± 0.51 a,b |
| 3 | 17.6 ± 1.8 d | 1.23 ± 0.25 a | 2.54 ± 0.48 e,f | 0.48 ± 0.11 a | 2.01 ± 0.11 a,b |
| 4 | 16.5 ± 1.9 b–d | 1.43 ± 0.29 a,b | 2.31 ± 0.36 c–e | 0.61 ± 0.13 b | 2.12 ± 0.62 b,c |
| 5 | 16.9 ± 1.1 c–d | 1.43 ± 0.25 a,b | 1.70 ± 0.34 a | 0.83 ± 0.13 d–f | 1.58 ± 0.54 a |
| 6 | 16.8 ± 1.3 b–d | 1.42 ± 0.26 a,b | 2.08 ± 0.35 b,c | 0.67 ± 0.12 b,c | 1.90 ± 0.57 a,b |
| 7 | 16.3 ± 2.3 a–d | 1.91 ± 0.46 d | 2.20 ± 0.63 b–d | 0.89 ± 0.23 f | 2.65 ± 1.10 c,d |
| 8 | 17.4 ± 2.0 c–d | 1.87 ± 0.38 d | 2.31 ± 0.36 c–e | 0.80 ± 0.18 d–f | 2.61 ± 0.74 c,d |
| 9 | 16.6 ± 1.8 b–d | 1.68 ± 0.25 c,d | 1.94 ± 0.32 a,b | 0.87 ± 0.18 e,f | 1.94 ± 0.50 a,b |
| 10 | 15.1 ± 2.2 a | 1.85 ± 0.34 d | 2.44 ± 0.46 d–f | 0.77 ± 0.19 c–e | 2.70 ± 0.74 d |
Different letters in the same column indicate that the means are statistically different using the Tukey-b test (p < 0.05).