Table 5.
Effects of biostimulants on total phenolic content (FOLIN) and on antioxidant activity (DPPH and ABTS) in peel and flesh of the Annurca fruits at harvest, after redding, and during the cold storage (+60 and +120 days). The same letter indicates not significant differences according to Duncan’s multiple range test (p < 0.05).
| Treatments | FOLIN | DPPH | FRAP | FOLIN | DPPH | FRAP |
|---|---|---|---|---|---|---|
| (mg/kg dw) | (mmol trolox/kg dw) | (mmol trolox/kg) | (mg/kg dw) | (mmol trolox/kg dw) | (mmol trolox/kg) | |
| Harvest | ||||||
| Peel | Flesh | |||||
| Control | 1.995 g | 27.721 fgh | 45.400 h | 0.693 g | 7.797 gh | 16.35 fg |
| PEP | 2.461 cde | 32.956 bc | 55.084 g | 0.952 ef | 9.879 d | 18.586 e |
| LG | 2.154 fg | 31.392 cd | 53.610 g | 0.591 h | 7.839 gh | 11.863 h |
| MA | 2.514 bcde | 33.602 b | 61.400 f | 0.707 g | 7.210 h | 15.797 g |
| After redding | ||||||
| Peel | Flesh | |||||
| Control | 2.132 g | 29.319 ef | 54.400 g | 0.727 g | 8.961 def | 17.389 ef |
| PEP | 2.523 bcde | 34.792 ab | 61.978 f | 0.713 g | 8.800 efg | 17.323 ef |
| LG | 2.315 ef | 36.526 a | 61.821 f | 0.921 f | 9.369 de | 12.731 h |
| MA | 2.018 g | 28.061 fgh | 44.505 h | 0.744 g | 8.230 fgh | 17.586 ef |
| + 60 days | ||||||
| Peel | Flesh | |||||
| Control | 2.734 ab | 27.644 fg | 84.154 b | 1.128 b | 13.053 a | 30.112 cd |
| PEP | 2.951 a | 28.798 efg | 82.119 bc | 1.037 cd | 11.574 c | 29.691 d |
| LG | 2.905 a | 28.532 fgh | 81.592 bc | 1.255a | 13.402 a | 34.410 a |
| MA | 2.600 bcde | 26.579 h | 79.908 cd | 1.016 de | 11.900 bc | 30.094 cd |
| + 120 days | ||||||
| Peel | Flesh | |||||
| Control | 2.588 bcd | 27.090 gh | 78.610 d | 1.116 b | 13.658 a | 29.919 d |
| PEP | 2.902 a | 29.109 ef | 84.189 b | 1.103 bc | 13.402 a | 28.568 d |
| LG | 2.399 de | 29.160 ef | 70.715 e | 1.164 b | 12.901 ab | 32.164 b |
| MA | 2.668 bc | 30.6841 de | 89.9087 a | 1.099 bc | 12.692 ab | 31.498 bc |