Table 4.
The results of Pearson’s correlation analysis.
| Variable | L* | a* | b* | BC | VC |
|---|---|---|---|---|---|
| L* | - | r = −0.9977 | r = 0.3593 | r = −0.9760 | r = −0.8853 |
| p < 0.001 | p = 0.382 | p < 0.001 | p = 0.003 | ||
| a* | r = −0.9977 | - | r = −0.4214 | r = 0.9821 | r = 0.8594 |
| p < 0.001 | p = 0.298 | p < 0.001 | p = 0.006 | ||
| b* | r = 0.3593 | r = −0.4214 | - | r = −0.4692 | r = 0.0077 |
| p = 0.382 | p = 0.298 | p = 0.241 | p = 0.986 | ||
| BC | r = −0.9760 | r = 0.9821 | r = −0.4692 | - | r = 0.8623 |
| p < 0.001 | p<0.001 | p = 0.241 | p = 0.006 | ||
| VC | r = −0.8853 | r = 0.8594 | r = 0.0077 | r = 0.8623 | - |
| p = 0.003 | p = 0.006 | p = 0.986 | p = 0.006 |
p-Values lower than 0.05 indicate the significant character of the correlation between normalized variables. L*, a*, b* = color parameters of the extracts; BC = betanin concentration in the sample; VC = vulgaxanthin concentration in the sample.