Table 1.
Quali-quantitative evaluation of the main soluble-free and soluble-conjugated phenols in the pulp, peels and kernels of ripe mango fruits of the cultivars Tommy Atkins and Keitt.
| Soluble-Phenols | Fruit Fractions | |||||
|---|---|---|---|---|---|---|
| Pulp | Peels | Kernels | ||||
| mg/100 g dw | ||||||
| Tommy Atkins | Keitt | Tommy Atkins | Keitt | Tommy Atkins | Keitt | |
| Free | ||||||
| Gallic acid | nd | nd | nd | nd | 14.6 ± 0.9 | 104.2 ± 7.5 |
| Methyl gallate | 6.6 ± 0.2 C | 9.3 ± 0.2 C | 31.9 ± 1.9 B | 62.9 ± 0.1 B | 2126.5 ± 130.7 A | 1885.2 ± 66.6 A |
| Propyl gallate | nd | nd | 27.3 ± 0.4 B | 101.1 ± 0.9 B | 1420.8 ± 63.5 A | 1375.2 ± 17.5 A |
| Total | 6.6 ± 0.2 C | 9.3 ± 0.2 C | 59.2 ± 2.3 B | 164.0 ± 1.0 B | 3561.9 ± 195.1 A | 3364.6 ± 91.6 A |
| Conjugated | ||||||
| Gallic acid | 197.1 ± 5.0 C | 189.2 ± 1.6 B | 129.7 ± 1.7 B | 214.6 ± 3.9 C | 851.3 ± 3.1 A | 338.2 ± 6.5 A |
| Methyl gallate | 23.6 ± 0.1 C | 3.8 ± 0.1 C | 367.7 ± 23.3 B | 559.4 ± 3.5 A | 387.4 ± 35.9 A | nd |
| Propyl gallate | nd | nd | nd | nd | nd | nd |
| Mangiferin | nd | nd | 411.0 ± 2.4 A | nd | 185.8 ± 1.7 B | 57.9 ± 0.2 |
| Rutin | nd | nd | 65.2 ± 1.6 A | 30.2 ± 0.3 A | 40.3 ± 0.1 B | 25.5 ± 6.1 B |
| Luteolin 7-O-glucoside | nd | nd | 13.1 ± 0.1 | 5.3 ± 0.3 | nd | nd |
| Total | 220.7 ± 5.1 C | 193.0 ± 1.7 C | 986.7 ± 29.1 B | 809.5 ± 8.0 B | 1464.8 ± 40.8 A | 421.6 ± 12.8 A |
nd: not detected. Data, expressed as mg/100 g dw, are the mean ± standard deviation of five independent replicates (n = 5). Data were submitted to one-way analysis of variance (ANOVA), differences among groups were detected using multiple comparison procedures (Tukey test). Bold indicates statistically significant differences between cultivars within the same fruit fraction; different capital letters denote differences among fruit fractions within the same cultivar (p < 0.05).