Table 1.
Phenolic acids and flavonoids composition of orange peel powder (ripe and unripe) extracts.
| Compounds | Unripe Orange Peel (mg/g) | Ripe Orange Peel (mg/g) |
|---|---|---|
| Catechin | 5.91 ± 0.03 c,B | 12.49 ± 0.01 c,A |
| Caffeic acid | 3.45 ± 0.01 d,A | 3.57 ± 0.02 e,A |
| Naringin | 3.58 ± 0.02 d,B | 5.71 ± 0.02 d,A |
| Epicatechin | 3.21 ± 0.01 d,B | 6.08 ± 0.01 d,A |
| Rutin | 18.65 ± 0.03 a,A | 17.93 ± 0.03 b,B |
| Quercitrin | 18.77 ± 0.01 a,B | 22.61 ± 0.01 a,A |
| Quercetin | 10.39 ± 0.01 b,B | 14.03 ± 0.02 b,A |
| Kaempferol | 5.86 ± 0.02 c,A | 3.76 ± 0.03 e,B |
| Luteolin | 3.19 ± 0.03 d,B | 5.83 ± 0.01 d,A |
Results are expressed as mean ± standard deviations (SD) of three determinations. Values with different alphabet along the same column (lowercase letters) are significantly different by Tukey test (p < 0.05). Values with different alphabet along the same row (capital letters) are significantly different (p < 0.05) by one-way analysis of variance (ANOVA).