Table 1.
Phytochemical content (expressed as mg/kg, dry weight (DW)) in fresh and fresh-cut in tomato, broccoli and grape in different seasons.
| Matrix | Phytochemicals | Winter Sampling | Spring Sampling | Summer Sampling | Autumn Sampling | ||||
|---|---|---|---|---|---|---|---|---|---|
| Fresh * | Fresh-Cut * | Fresh * | Fresh-Cut * | Fresh * | Fresh-Cut * | Fresh * | Fresh-Cut * | ||
| Tomato | Phenolic acids | 102 (30) a | 54 (19) 1 | 225 (31) b | 294 (26) 2 | 97 (46) | 107 (43) | 148 (46) | 127 (54) |
| Flavones | 29 (7) a | 21 (5) 1 | 37 (8) a | 24 (5) 1 | 39 (9) a | 62 (12) 1 | 104 (36) b | 113 (55) 2 | |
| Flavonols | 44 (20) a | 21 (11) 1 | 66 (16) a | 34 (17) 1 | 92 (17) a | 59 (12) 1 | 165 (29) b | 130 (94) 2 | |
| Broccoli | Phenolic acids | 38 (11) a,c,d | 30 (8) 1,3,4 | 61 (16) b | 71 (26) 2 | 21 (9) a,c,d | 50 (12) 1,3,4 | 29 (12) a,c,d | 32 (15) 1,3,4 |
| Flavones | 26 (4) a | 22 (10) 1,2 | 35 (5) b,c | 26 (10) 1,2 | 43 (3) c,d | 61 (27) 3,4 | 53 (6) d | 74 (19) 3,4 | |
| Flavonols | 13 (4) a,d | 5 (2) 1,2 | 35 (10) b,d | 15 (4) 2,1 | 58 (18) c | 41 (16) 3,4 | 32 (5) a,b,d | 43 (15) 3,4 | |
| Glucosinolates | 4449 (105) a | 3308 (198) | 2929 (986) b | 2432 (945) | 884 (237) c,d | 1517 (856) | 919 (331) c,d | 1526 (877) | |
| Grape | Phenolic acids | 1 (1) | Not detected 1,2 | 3 (2) | 2 (1) | 1 (1) | 1 (1)12 | 2 (1) | 9 (8) 3 |
| Flavones | 35 (7) a,b | 49 (22) 1,2 | 48 (8) a,b | 47 (7) 1,2 | 74 (4) | 77 (31) | 123 (66) c | 90 (21) 3 | |
| Flavonols | 230 (155) | 149 (92) | 213 (52) | 112 (27) | 207 (138) | 114 (28) | 220 (109) | 139 (48) | |
* Mean value. The standard deviation is given in parenthesis (n = 6); mean values in italics indicate significant differences between fresh and fresh-cut matrices; in fresh samples, the mean values in a row with different superscript letters are significantly different (p < 0.05) using the Bonferroni test; in fresh-cut samples, the mean values in a row with different superscript numbers are significantly different (p < 0.05) using the Bonferroni test.