Table 2.
Nutrient, total polyphenol contents, and antioxidant activity of coffee pulp extracts
| Nutrients |
Antioxidant activity |
||||||
|---|---|---|---|---|---|---|---|
| Moisture (%) | Ash (%) | Fat (%) | Protein (%) | Total polyphenolic content (mg/L of gallic acid) | ABTS (IC50 μg/mL) | DPPH (IC50 μg/mL) | |
| CPE1 | 5.63 | 8.78 | 1.40 | 7.06 | 17.40 ± 0.74 | 18 ± 1.9 | 82 ± 7.8 |
| CPE2 | 5.28 | 8.88 | 1.76 | 7.00 | 10.47 ± 0.77 | 27 ± 0.6 | 153 ± 9.3 |
| CPE3 | 5.93 | 8.32 | 2.51 | 7.00 | 7.61 ± 0.42 | 27 ± 1.2 | 140 ± 9.2 |
Mean ± standard deviation.
ABTS, 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid); CPE, coffee pulp extract; DPPH, 2,2-diphenyl-1-picrylhydrazyl.