Table 2.
Correlation coefficients between antioxidant activities and metabolite groups assembled with processed faba samples.
| L-dopa | Vitamin C | TPC | TFC | DPPH | ABTS | ||
|---|---|---|---|---|---|---|---|
| Young leaf | L-dopa | 1 | |||||
| vitamin C | 0.890 *** | 1 | |||||
| TPC | 0.977 *** | 0.918 *** | 1 | ||||
| TFC | 0.861 *** | 0.888 *** | 0.882 *** | 1 | |||
| DPPH | 0.826 *** | 0.891 *** | 0.833 *** | 0.948 *** | 1 | ||
| ABTS | 0.907 *** | 0.923 *** | 0.919 *** | 0.910 *** | 0.919 *** | 1 | |
| Old leaf | L-dopa | 1 | |||||
| vitamin C | 0.954 *** | 1 | |||||
| TPC | 0.971 *** | 0.969 *** | 1 | ||||
| TFC | 0.960 *** | 0.963 *** | 0.980 *** | 1 | |||
| DPPH | 0.984 *** | 0.967 *** | 0.985 *** | 0.973 *** | 1 | ||
| ABTS | 0.933 *** | 0.967 *** | 0.960 *** | 0.941 *** | 0.956 *** | 1 | |
| Seeds | L-dopa | 1 | |||||
| vitamin C | 0.229 ns | 1 | |||||
| TPC | 0.256 ns | 0.103 ns | 1 | ||||
| TFC | 0.079 ns | −0.340 ns | 0.043 ns | 1 | |||
| DPPH | 0.495 ** | 0.079 ns | 0.179 ns | 0.309 ns | 1 | ||
| ABTS | 0.566 ** | 0.228 ns | 0.480 * | −0.252 ns | 0.396 * | 1 |
Tukey’s HSD test, * indicates p < 0.05, ** indicates p < 0.01, *** indicates p < 0.001, and ns indicates no significance. Data of L-dopa, vitamin C, TPC, TFC, DPPH, and ABTS for correlation analysis were calculated by the time-dependent dry and wet heat values, ranging 0 to 60 min treatments. The information of sample concentrations was mentioned in method sections.