Table 1.
Antioxidant capacity and bioactive compounds content in saffron floral by-products and stigmas 1.
| SFL1 | SFL2 | Spanish Stigmas | Iranian Stigmas | Greek Stigmas | |
|---|---|---|---|---|---|
| DPPH 2 | 98.82 ± 4.79d | 107.40 ± 1.95d | 201.27 ± 7.71b | 278.92 ± 8.37a | 145.58 ± 21.98c |
| ABTS 2 | 50.99 ± 2.51c | 48.41 ± 4.67c | 110.88 ± 9.99b | 142.22 ± 5.23a | 124.95 ± 27.44ab |
| FRAP 2 | 1250 ± 88b | 1181 ± 26b | 3667 ± 319a | 3471 ± 123a | 3445 ± 274a |
| TPC 3 | 32.42 ± 6.90b | 32.82 ± 2.23b | 44.80 ± 2.30a | 36.35 ± 3.47b | 34.00 ± 3.22b |
| TFC 4 | 3.99 ± 0.79b | 5.37 ± 0.19b | 18.74 ± 1.22a | 15.32 ± 1.73a | 17.39 ± 4.14a |
| TAC 5 | 39.17 ± 2.98b | 69.02 ± 4.34a | n.d. | n.d. | n.d. |
| TBC 6 | 28.39 ± 2.17c | 39.59 ± 1.47c | 77.51 ± 14.93ab | 71.06 ± 6.47b | 90.82 ± 8.37a |
1 Means ± standard deviation in the same line followed by different lowercase letters indicate statistically significant differences at p ≤ 0.05 for each sample (n = 3). 2 The antioxidant capacity is expressed as mmol Trolox Equivalents (TE) per 100 g dw of sample. 3 The Total Polyphenols Content (TPC) are expressed as mg Gallic Acid Equivalents (GAE) per g dw of sample. 4 The Total Flavonoids Content (TFC) are expressed as mg of Catechin Equivalents (CE) per g dw of sample. 5 The Total Anthocyanin Content (TAC) were expressed in mg of Delphinidin Equivalents (mg DE) per g dw of sample. 6 The total bta-carotene is expressed as mg of beta-carotene per 100 g dw of sample (%). SFL1, SFL2: Saffron floral by-products from two different producers; n.d.: not determined.