Table 3.
Chemical composition of mate tea and decaffeinated mate tea leaves extracts obtained with NADES, hydroalcoholic and Soxhlet extractions at 40 °C, 1:20 S/L ratio, 60 min (4 cyles of 15 min). Data expressed as mean ± S.D.
| Mate tea leaves | % (g chlorogenic acid/g mate) | % (g caffeine/g mate) | % (g rutin/g mate) | % (g ferulic acid/g mate) | % (g theobromine/g mate) |
| LA:Glu:Water (5:1:3) | 2.25 ± 0.71 | 2.77 ± 0.96 | 0.87 ± 0.26 | 2.48 ± 0.97 | 0.39 ± 0.05 |
| LA:Gly:Water (3:1:3) | 4.28 ± 0.68 | 2.69 ± 0.87 | 1.03 ± 0.33 | 4.52 ± 0.76 | 0.53 ± 0.09 |
| MeOH (70% v/v) | 1.91 ± 0.26 | 1.69 ± 0.16 | 0.54 ± 0.04 | 1.5 ± 0.26 | 0.35 ± 0.01 |
| Soxhlet (MeOH) |
1.50 ± 0.10 |
2.18 ± 0.17 |
0.66 ± 0.05 |
0.95 ± 0.15 |
0.37 ± 0.01 |
|
Decaffeinated mate tea leaves |
% (g chlorogenic acid/g mate) |
% (g caffeine/g mate) |
% (g rutin/g mate) |
% (g ferulic acid/g mate) |
% (g theobromine/g mate) |
| LA:Glu:Water (5:1:3) | 3.77 ± 0.75 | n.d | 0.82 ± 0.13 | 1.87 ± 0.42 | 0.35 ± 0.02 |
| LA:Gly:Water (3:1:3) | 6.35 ± 0.80 | n.d | 0.81 ± 0.14 | 2.64 ± 0.39 | 0.42 ± 0.02 |
| MeOH (70% v/v) | 2.41 ± 0.49 | n.d | 0.49 ± 0.07 | 0.69 ± 0.22 | 0.32 ± 0.01 |
| Soxhlet (MeOH) | 2.15 ± 0.18 | n.d | 0.49 ± 0.05 | 0.61 ± 0.04 | 0.33 ± 0.01 |
n.d – not detected.