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Phenolic Profile and Biological Activities of the Pepino (Solanum muricatum) Fruit and Its Wild Relative S. caripense

AutorHerraiz, Francisco J.; Villaño, Débora ; Plazas, Mariola; Vilanova, Santiago; Ferreres, Federico ; Prohens, Jaime; Moreno, Diego A.
Fecha de publicación16-mar-2016
EditorMultidisciplinary Digital Publishing Institute
CitaciónInternational Journal of Molecular Sciences 17 (3): 394 (2016)
ResumenThe pepino (<i>Solanum muricatum</i>) is an edible and juicy fruit native to the Andean region which is becoming increasingly important. However, little information is available on its phenolic composition and bioactive properties. Four pepino varieties (37-A, El Camino, Puzol, and Valencia) and one accession (E-7) of its close wild relative <i>S. caripense</i> were characterized by HPLC-DAD-MS<sup>n</sup>/ESI. Twenty-four hydroxycinnamic acid derivatives were detected (5 to 16 compounds per variety or accession), with differences of more than two-fold for their total content among the materials studied. The major phenolics in the pepino varieties were chlorogenic acids and derivatives, while in <i>S. caripense</i> a caffeoyl-synapoyl-quinic acid was the major compound. The <i>in vitro</i> antioxidant capacity (DPPH (2,2-diphenyl-1-picrylhydrazyl hydrate), ORAC (oxygen radical absorbance capacity), and TRC (total reducing capacity) tests) was higher in <i>S. caripense</i>. Pepino and <i>S. caripense</i> extracts were not toxic for RAW 264.7 macrophage cells, and the raw extracts inhibited NO production of the lipopolysaccharide (LPS)-stimulated macrophages by 36% (El Camino) to 67% (37-A). No single variety ranked high simultaneously for hydroxycinnamic acids content, antioxidant activity and biological activity. We suggest the screening of large collections of germplasm or the use of complementary crosses between Puzol (high for hydroxycinnamic acids and biological activity) and <i>S. caripense</i> E-7 (high for antioxidant activity) to select and breed pepino varieties with enhanced properties.
Versión del editorhttps://doi.org/10.3390/ijms17030394
Identificadoresdoi: 10.3390/ijms17030394
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