Sensory and functional quality characterization of protected designation of origin ‘Piennolo del Vesuvio’ cherry tomato landraces from Campania-Italy
2019
Carillo, Petronia | Kyriacou, Marios C. | El-Nakhel, Christophe | Pannico, Antonio | dell'Aversana, Emilia | D'Amelia, Luisa | Colla, Giuseppe | Caruso, Gianluca | De Pascale, S. (Stefania) | Rouphael, Youssef
Compositional characterization was performed on seven ‘Pomodorino del Piennolo del Vesuvio’ (PPV) tomato landraces, a signature product of Campania (Italy) threatened by genetic erosion. Characterization encompassed determinations of macro-minerals, soluble carbohydrates, starch, acidity, lycopene, polyphenols, anthocyanins, protein and free amino acids. Exceptionally high dry matter (13.0 ± 0.2%) and sugar content (101.3 ± 3.8 μmol g−1 fw) and very low (0.007–0.009) Na/K ratio were invariably obtained across landraces, contrasted by significant variation in acidity (28.5–3.9 g kg−1 dw). Giagiù, Acampora and Riccia San Vito differentiated by high polyphenols content (131.8 ± 2.5 mg 100 g−1) while Acampora, Cozzolino and Fofò by high lycopene content (13.3 ± 10.6 mg 100 g−1 fw). Glutamate, GABA and glutamine represented 65% of the 22 detected amino acids mean total content. Glutamate, linked to umami taste, was highest (19.2 µmol g−1 fw) in Fofò. Our results will contribute towards the systematic documentation of sensory and functional quality profiles of an important collection of tomato landraces.
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