Table 5.
The correlation matrix of the physico-chemical properties of bergamot juice and bergamot cloudy juice which is built on the basis of 48 values for each parameter (4 replicates × 2 harvest years × 3 cultivars). In the south-west section of the matrix is the r-value (above) and the significance level (below) with p < 0.05, *. In the north-east section of the matrix there is the t-value (in italics) with the significance of the t-test calculated at 95% confidence interval and the R2 value (underlined).
| pH Juice |
°Brix Juice |
TA Juice |
°Brix/TA/% Juice | Vitamin C Juice |
Formol N Juice |
Neoeriocitrin Juice |
Naringin Juice |
Neohesperidin Juice |
Melitidin Juice |
Brutieridin Juice |
Tot. Floids Juice |
Neoeriocitrin Cloudy Juice |
Naringin Cloudy Juice |
Neohesperidin Cloudy Juice |
Melitidin Cloudy Juice |
Brutieridin Cloudy Juice |
Tot. Floids Cloudy Juice |
DPPH Assay Juice |
FRAP Assay Juice |
||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Juice | pH | 1 |
76.65
0.326 |
50.76
0.548 |
32.83
0.169 |
31.32
0.413 |
14.31
0.015 |
26.24
0.120 |
36.48
0.251 |
24.92
0.023 |
17.65
0.146 |
21.45
0.285 |
17.55
0.249 |
28.87
0.378 |
53.78
0.048 |
34.16
0.149 |
10.13
0.046 |
24.26
0.047 |
28.44
0.072 |
50.78
0.060 |
50.94
0.330 |
| °Brix | −0.571 *** |
1 |
43.67
0.529 |
24.10
0.153 |
30.98
0.413 |
78.41
0.119 |
12.73
0.309 |
28.34
0.036 |
16.67
0.002 |
0.40
0.072 |
15.18
0.094 |
17.30
0.490 |
19.42
0.184 |
43.33
0.002 |
25.30
0.011 |
16.34
0.180 |
8.36
0.008 |
28.41
0.021 |
49.98
0.272 |
41.07
0.194 |
|
| TA | −0.740 *** |
0.727 *** |
1 |
18.93
0.432 |
28.73
0.588 |
51.46
0.010 |
32.97
0.317 |
14.50
0.309 |
22.54
0.001 |
40.53
0.078 |
17.97
0.377 |
15.75
0.147 |
23.51
0.446 |
11.54
0.003 |
18.49
0.177 |
46.73
0.135 |
40.02
0.016 |
28.24
0.025 |
44.67
0.006 |
11.34
0.453 |
|
| °Brix/TA (%) | 0.411 *** |
−0.391 *** |
−0.657 *** |
1 |
29.97
0.008 |
33.71
0.076 |
13.39
0.003 |
4.34
0.046 |
4.54
0.306 |
21.51
0.252 |
1.88
0.003 |
16.61
0.173 |
4.55
0.006 |
9.78
0.278 |
0.62
0.432 |
28.29
0.209 |
20.18
0.004 |
25.07
0.846 |
47.54
0.017 |
9.55
0.109 |
|
| Vitamin C | −0.643 *** |
−0.643 *** |
0.767 *** |
0.089 *** |
1 |
31.62
0.002 |
30.63
0.280 |
29.71
0.392 |
30.23
0.028 |
30.96
0.168 |
30.08
0.513 |
3.58
0.236 |
30.22
0.415 |
29.46
0.002 |
29.93
0.166 |
31.19
0.124 |
30.85
0.016 |
25.98
0.013 |
8.27
0.000 |
29.45
0.926 |
|
| FormolNumber | 0.124 *** |
0.345 *** |
−0.098 *** |
0.276 *** |
−0.042 *** |
1 |
27.60
0.001 |
37.30
0.161 |
25.77
0.039 |
19.40
0.000 |
22.10
0.030 |
17.57
0.064 |
29.82
0.040 |
54.78
0.078 |
35.06
0.208 |
12.91
0.001 |
36.64
0.001 |
28.44
0.055 |
50.86
0.048 |
51.90
0.002 |
|
| Neoeriocitrin | 0.346 *** |
−0.556 *** |
−0.563 *** |
0.054 *** |
−0.529 *** |
0.032 *** |
1 |
17.80
0.020 |
7.56
0.150 |
9.96
0.004 |
8.35
0.096 |
17.07
0.166 |
8.65
0.303 |
26.99
0.002 |
14.26
0.232 |
19.67
0.003 |
7.38
0.002 |
28.39
0.016 |
49.13
0.014 |
26.06
0.196 |
|
| Naringin | 0.501 *** |
−0.190 *** |
−0.556 *** |
0.214 *** |
−0.626 *** |
0.401 *** |
0.141 *** |
1 |
8.62
0.032 |
25.67
0.080 |
5.47
0.759 |
16.43
0.019 |
8.67
0.202 |
4.71
0.100 |
3.77
0.201 |
32.18
0.121 |
24.57
0.162 |
28.32
0.005 |
46.93
0.023 |
4.61
0.390 |
|
| Neohesperidin | 0.153 *** |
0.045 *** |
−0.024 *** |
−0.553 *** |
−0.166 *** |
−0.197 *** |
−0.387 *** |
0.179 *** |
1 |
14.97
0.599 |
1.95
0.191 |
16.80
0.042 |
0.29
0.006 |
14.36
0.218 |
5.17
0.316 |
20.99
0.100 |
13.30
0.002 |
28.36
0.194 |
48.13
0.022 |
14.05
0.039 |
|
| Melitidin | −0.382 *** |
0.269 n.s. |
0.280 *** |
0.502 *** |
0.410 *** |
0.000 *** |
0.066 *** |
−0.282 *** |
−0.774 *** |
1 |
14.19
0.174 |
17.30
0.163 |
17.01
0.032 |
37.46
0.077 |
22.54
0.085 |
9.54
0.339 |
4.57
0.008 |
28.41
0.182 |
49.91
0.045 |
35.96
0.161 |
|
| Brutieridin | −0.534 *** |
0.306 *** |
0.614 *** |
0.050 n.s. |
0.716 *** |
−0.173 *** |
−0.310 *** |
−0.871 *** |
−0.437 n.s. |
0.417 *** |
1 |
16.69
0.097 |
1.80
0.236 |
9.88
0.001 |
2.40
0.063 |
18.67
0.104 |
12.72
0.047 |
28.35
0.004 |
47.66
0.001 |
9.73
0.488 |
|
| Total Floids | 0.499 *** |
−0.700 *** |
−0.384 *** |
−0.416 *** |
−0.486 *** |
−0.252 *** |
0.407 *** |
0.137 *** |
0.205 *** |
−0.404 *** |
−0.311 *** |
1 |
16.79
0.236 |
16.25
0.111 |
16.58
0.010 |
17.46
0.126 |
17.22
0.016 |
26.37
0.125 |
11.85
0.583 |
16.25
0.242 |
|
| Cloudy Juice | Neoeriocitrin | 0.615 *** |
−0.429 *** |
−0.668 *** |
0.080 *** |
−0.644 *** |
0.200 *** |
0.550 *** |
0.449 *** |
−0.077 n.s. |
−0.178 *** |
−0.486 n.s. |
0.486 *** |
1 |
15.17
0.071 |
5.23
0.370 |
24.07
0.195 |
15.37
0.013 |
28.36
0.026 |
48.14
0.021 |
14.78
0.435 |
| Naringin | −0.219 *** |
−0.048 *** |
0.054 *** |
0.527 *** |
0.048 *** |
0.280 *** |
−0.040 *** |
0.316 *** |
−0.467 *** |
0.278 *** |
0.035 *** |
−0.333 *** |
−0.266 *** |
1 |
9.19
0.187 |
46.96
0.031 |
37.38
0.497 |
28.30
0.045 |
46.42
0.068 |
0.00
0.003 |
|
| Neohesperidin | −0.386 *** |
0.105 *** |
0.421 *** |
−0.657 n.s. |
0.408 *** |
−0.456 *** |
−0.482 *** |
−0.448 *** |
0.562 *** |
−0.291 *** |
0.251 *** |
−0.099 *** |
−0.608 *** |
−0.432 *** |
1 |
29.49
0.038 |
21.27
0.001 |
28.33
0.358 |
47.47
0.000 |
8.97
0.148 |
|
| Melitidin | −0.214 *** |
0.424 *** |
0.367 *** |
0.457 *** |
0.352 *** |
0.032 *** |
−0.052 *** |
−0.348 *** |
−0.316 *** |
0.582 *** |
0.323 *** |
−0.355 *** |
−0.442 *** |
0.175 *** |
−0.195 *** |
1 |
18.21
0.171 |
28.43
0.282 |
50.46
0.002 |
44.75
0.165 |
|
| Brutieridin | 0.217 *** |
0.091 *** |
0.125 *** |
−0.062 *** |
0.127 *** |
0.022 *** |
0.044 *** |
−0.403 *** |
0.047 *** |
0.092 *** |
0.217 *** |
0.128 *** |
0.116 *** |
−0.705 *** |
0.032 *** |
0.414 *** |
1 |
28.40
0.073 |
49.69
0.065 |
35.65
0.029 |
|
| Total Floids | −0.268 *** |
−0.146 *** |
0.158 *** |
−0.920 *** |
−0.114 *** |
−0.235 *** |
−0.126 *** |
−0.071 *** |
0.441 *** |
−0.427 *** |
−0.066 *** |
0.353 *** |
−0.161 *** |
−0.213 *** |
0.598 *** |
−0.531 *** |
−0.271 *** |
1 |
26.73
0.040 |
28.30
0.043 |
|
| Juice | DPPH assay | 0.245 *** |
−0.522 *** |
−0.079 *** |
−0.128 *** |
0.000 *** |
−0.220 *** |
0.116 *** |
−0.151 *** |
0.149 *** |
0.211 *** |
0.024 *** |
0.764 *** |
0.143 *** |
−0.260 *** |
0.017 *** |
−0.048 *** |
0.256 *** |
0.199 *** |
1 |
46.40
0.001 |
| FRAP assay | −0.574 *** |
0.441 *** |
0.673 *** |
−0.330 *** |
0.962 *** |
0.044 *** |
−0.309 *** |
−0.624 *** |
−0.196 *** |
0.402 *** |
0.699 *** |
−0.492 *** |
−0.659 *** |
0.054 n.s. |
0.385 *** |
0.406 *** |
0.171 *** |
−0.206 *** |
0.024 *** |
1 |