Table 2.
Betalains and terpenes found in some fruits.
| Source | Compound Category | Compounds | Ref. |
|---|---|---|---|
| Red pitaya pulp | Betalains | Betanin, phyllocactin I, phyllocactin-II, neobetanin, and iso-phyllocactin-I | [39,65] |
| Lemon | Terpenes | Limonene, β-pinene, and γ-terpinene | [66,67,68,69] |
| Lime | Terpenes | Limonene, γ-terpinene and β-pinene | [70,71] |
| Mandarin | Terpenes | Limonene, γ-terpinene, and α-pinene | [66,69] |
| Orange | Terpenes | Limonene and myrcene | [69,72] |
| Orange peel | Terpenes | Limonene and γ-terpinene | [73] |
| Grapefruit | Terpenes | Limonene | [69,74,75] |