Table 3.
Total phenolic content (TPC) and radical scavenging activity of dried fruit pomaces.
| Fruit pomace | TPC1 | Total antioxidant activity |
References | ||||
|---|---|---|---|---|---|---|---|
| DPPH2 | RSA3 | ABTS4 | ORAC5 | ||||
| Apple | 5.5 | 32.0 | – | – | – | Juskiewicz et al. (2017) | |
| 8.4 | – | – | – | – | Colombino et al. (2020) | ||
| ≃7.5 | – | ≃4.0 | – | – | Gouw et al. (2017) | ||
| – | 47.36 | – | – | – | Pieszka et al. (2015) | ||
| 5.75 | – | – | – | – | Juskiewicz et al. (2015) | ||
| Strawberry | 10.3 | 84.7 | – | – | – | Juskiewicz et al. (2017) | |
| 28.9 | – | – | – | – | Colombino et al. (2020) | ||
| – | 39.36 | Pieszka et al. (2015) | |||||
| Seedless strawberry | 43.1 | 256.4 | – | – | – | Juskiewicz et al. (2017) | |
| Olive (processed) | 3.7 | – | – | – | – | Sayehban et al. (2016) | |
| 1.9 | – | – | – | – | Sayehban et al. (2016) | ||
| Olive (unprocessed) | 12.5 | – | – | – | – | Nasopoulou et al. (2018) | |
| Raspberry | ≃25.0 | – | ≃43.0 | – | – | Gouw et al. (2017) | |
| Cranberry | ≃2.5 | – | ≃4.0 | – | – | Gouw et al. (2017) | |
| 24.9 | – | – | 144.1 | – | Ross et al. (2017) | ||
| Wild blueberry Blueberry |
91.3 to 156.3 | 488.3 to 714.1 | – | – | – | Hoskin et al. (2019) | |
| 0.117 | 3.677 | – | – | – | Bhatt et al. (2021) | ||
| ≃8.0 | – | ≃9.0 | – | – | Gouw et al. (2017) | ||
| 31.1 | – | – | 24.2 | – | Ross et al. (2017) | ||
| Citrus | |||||||
| Dried lemon | 14.4 to 17.2 | 0.12 to 0.13 | – | – | – | Papoutsis et al. (2018b) | |
| Lemon (microwave-treated) | 62.8 | – | – | – | – | Papoutsis et al. (2018c) | |
| Lemon (untreated) | 40.9 | – | – | – | – | Papoutsis et al. (2018c) | |
| Grape | |||||||
| Red grape | 12.3 | – | – | – | – | Erinle et al. (2021) | |
| 12.4 | – | – | – | – | Kasapidou et al. (2016) | ||
| Red grape cultivars | |||||||
| Touriga Nacional | 69.3 | 0.52 | – | – | 1,054 | Tournour et al. (2015) | |
| Touriga Franca | 100.1 | 0.87 | – | – | 1,343 | Tournour et al. (2015) | |
| Tinta Roriz | 131.7 | 1.09 | – | – | 2,337 | Tournour et al. (2015) | |
| Pineapple | 368.5 | 68.4 | – | – | – | Saikia and Mahanta (2015) | |
| 1298 | 4.88 | – | 7.78 | – | Martínez et al. (2012) | ||
≃ Approximately.
1
TPC = total phenolic content, mg gallic acid equivalent (GAE) per gram dry weight.
2
DPPH = 1,1 diphenyl-1-picryl hydrazyl assay, μmol trolox equivalent per gram.
3
RSA = radical scavenging activity, mg ascorbic acid equivalent per gram dry weight.
4
ABTS = 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid), μmol trolox equivalent per gram.
5
ORAC = oxygen radical absorbance capacity, μmol trolox equivalent per gram.
6
DPPH, total antioxidant activity reported as percentage (%).
7
Values with unit as mg GAE per gram fresh leaf.
8
Methanol-acetone extracted TPC value reported in mg GAE per 100 g dry weight.