Ceramides as Possible Nutraceutical Compounds: Characterization of the Ceramides of the Moro Blood Orange (Citrus sinensis)
2012
Valsecchi, Manuela | Mauri, Laura | Casellato, Riccardo | Ciampa, Maria Grazia | Rizza, Luisa | Bonina, Andrea | Bonina, Francesco | Sonnino, Sandro
Ceramides are presented as nutraceutical compounds for protection of colon carcinoma and as important cosmetic preparation components, increasing absorption through the skin. Therefore, the ceramide (Cer) content of Moro blood oranges was determined by mass spectrometry. A total of 114 Cer species were identified: ∼160 mg in the peels and ∼140 mg in the pulp per kilogram of oranges, expressed as “milligram equivalents of d18:1,17:0 Cer”. The predominant ceramides contained 4-hydroxy-8-sphingenine (t18:1Δ⁸) and 4-hydroxysphinganine (t18:0) as long-chain bases (LCBs) and fatty acids (FAs) with different structures. In the pulp, t18:1Δ⁸- and t18:0-containing Cer species comprised 50.5 and 33.5% of the total, respectively, 11.5 and 3.5% non-hydroxylated FAs, respectively, 32.0 and 21.0% α-hydroxylated FAs, respectively, and 7.0 and 9.0% α,β-hydroxylated FAs, respectively. In the peels, t18:1Δ⁸- and t18:0-containing species comprised 49.5 and 34.5% of the total, respectively, 16.0 and 1.5% non-hydroxylated FAs, respectively, 31.5 and 29.0% α-hydroxylated FAs, respectively, and 2.0 and 4.0% α,β-hydroxylated FAs, respectively.
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