Table 3.
Statistical analysis of juices from three blocks.
| Source of Variation | Juice Yield (%) | Concentration of Each Component in Juice (mg/L) | Extraction of Each Component in Juice (mg/kg of Grapes) 1 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Proteins * | Phenolics # | TLPs † | Chitinases † | Proteins * | Phenolics # | TLPs † | Chitinases † | ||
| Process | |||||||||
| H-WB | 39.3 a | 131.5 ab | 204.2 a | 106.6 b | 75.9 a | 52.1 a | 78.4 a | 41.8 a | 30.3 a |
| H-DC-3 | 59.0 b | 151.3 b | 246.3 b | 107.3 b | 83.2 b | 88.6 b | 144.6 b | 63.1 b | 48.9 b |
| M-DC-3 | 64.5 c | 120.0 a | 235.5 b | 99.0 a | 76.7 ab | 76.5 b | 151.9 b | 63.7 b | 49.3 b |
| Pressure | |||||||||
| 0–0.4 MPa | 39.4 a | 139.3 a | 239.6 a | 104.3 ab | 76.5 a | 56.4 a | 97.1 a | 41.2 a | 31.0 a |
| 0–0.8 MPa | 57.0 b | 133.5 a | 227.6 a | 107.6 b | 81.2 a | 74.9 b | 131.7 b | 60.5 b | 45.9 b |
| 0–1.6 MPa | 66.3 c | 130.0 a | 218.9 a | 101.0 a | 78.1 a | 85.8 b | 146.1 b | 66.8 b | 51.6 b |
| Process * Pressure | |||||||||
| H-WB 0–0.4 MPa | 15.3 a | 123.5 a | 217.3 a | 102.4 a | 68.7 a | 18.5 a | 32.9 a | 15.4 a | 10.3 a |
| H-WB 0–0.8 MPa | 42.6 b | 139.6 a | 199.0 a | 114.5 a | 81.5 a | 59.3 ab | 84.7 b | 48.6 b | 34.6 b |
| H-WB 0–1.6 MPa | 59.9 d | 131.3 a | 196.4 a | 102.9 a | 77.4 a | 78.4 b | 117.6 bc | 61.5 bc | 46.1 bc |
| H-DC 3 0–0.4 MPa | 49.0 c | 162.2 a | 257.9 a | 109.5 a | 83.7 a | 80.0 b | 126.5 bcd | 53.8 bc | 41.2 bc |
| H-DC 3 0–0.8 MPa | 60.8 d | 148.8 a | 252.1 a | 109.6 a | 85.2 a | 90.3 b | 153.3 cd | 66.6 bc | 51.7 bc |
| H-DC 3–1.6 MPa | 67.1 e | 142.9 a | 228.8 a | 102.7 a | 80.7 a | 95.4 b | 154.1 cd | 68.9 bc | 53.8 bc |
| M-DC 3–0.4 MPa | 54.0 c | 132.1 a | 243.4 a | 100.9 a | 77.1 a | 70.9 b | 131.8 cd | 54.4 bc | 41.5 bc |
| M-DC 3 0–0.8 MPa | 67.6 e | 112.2 a | 231.7 a | 98.8 a | 76.8 a | 75.3 b | 157.1 cd | 66.4 bc | 51.5 bc |
| M-DC 3 0–1.6 MPa | 71.9 e | 115.8 a | 231.5 a | 97.2 a | 76.1 a | 83.5 b | 166.6 d | 70.1 c | 54.9 c |
1 Extracted amount of each component is calculated by multiplying juice yield and corresponding concentration. * protein concentration was determined by EZQ kit, which is expressed as ovalbumin equivalent; # phenolics was determined by Folin–Ciocalteau method, which is expressed as gallic acid equivalent; † TLPs and chitinases were determined by RP-HPLC, which is expressed as thaumatin equivalent. Statistically significant differences (p < 0.05) between treatments using a post hoc Tukey test are indicated by different letters.