Table 5.
Total phenolic content and both antioxidant and antihypertensive activities of extracts from the fresh, oven-dried, and freeze-dried S. ramosissima.
| Processing Plant | Fresh (fw) a |
Fresh (dw) abc |
Oven-Dried (dw) ab |
Freeze-Dried (dw) ab |
|---|---|---|---|---|
| TPC (mg GAE/g) | 1.02 ± 0.04 | 8.64 ± 0.34A | 7.41 ± 0.29 bB | 9.74 ± 0.88 aA |
| Antioxidant activity | ||||
| ORAC (µmol TEAC/g) | 23.85 ± 3.04 | 202.10 ± 25.81 B | 291.10 ± 17.95 bB | 418.81 ± 54.01 aA |
| HOSC (µmol TEAC/g) | 26.06 ± 2.29 | 220.21 ± 15.51 A | 147.21 ± 12.44 bB | 237.20 ± 12.02 aA |
| Antihypertensive activity | ||||
| ACE inhibition (IC50 = mg/mL) | 95.61 ± 14.13 | 12.60 ± 1.73 A | 24.56 ± 1.74 aB | 18.96 ± 0.62 aB |
a Data are expressed as means values ± standard deviation (n = 3). b The lower-case letters (a and b) correspond to the statistical analysis performed to calculate the existence of a significant difference (p < 0.05) between both drying methods by the unpaired t-test. The upper-case letters (A,B) correspond to the statistical analysis performed to calculate the existence of a significant difference (p < 0.05) by Tukey’s test. c The values were converted from fresh weight to dried weight according to the moisture value.