Influence of Harvest Stage and Rootstock Genotype on Compositional and Sensory Profile of the Elongated Tomato cv. “Sir Elyan”
2020
Rosario Paolo Mauro | Valeria Rizzo | Cherubino Leonardi | Agata Mazzaglia | Giuseppe Muratore | Miriam Distefano | Leo Sabatino | Francesco Giuffrida
The present experiment addressed the effects of two harvest stages, namely breaker (S1) and turning (S2), on compositional and sensory profile of grafted, greenhouse elongated tomatoes cv. &ldquo:Sir Elyan&rdquo:. The rootstocks &ldquo:He-Man&rdquo:, &ldquo:Interpro&rdquo:, and &ldquo:Armstrong&rdquo: were used. The S1 fruits showed a higher dry matter content, firmness and titratable acidity when compared to the S2 ones (by 6%, 3%, and 15%, respectively). They showed, also, the highest L-ascorbic acid concentration and antioxidant activity. Differently, soluble solid content, lycopene and &beta:-carotene increased in the S2 fruits (by 4%, 92%, and 26%, respectively). Excepting methyl salicylate, all the volatiles detected peaked in the S2 fruits, which were scored by panelists as sweeter and more flavorful than the S1 ones. Among the rootstock genotypes, &ldquo:He-Man&rdquo: promoted fruits firmness, carotenoids concentration and antioxidant activity, irrespective of the harvest stage. &ldquo:Interpro&rdquo: enhanced the sensory attributes of the S1 fruits in terms of bitterness, sourness, sweetness and flavor. Differently, sweetness, sourness, and tomato flavor of the S2 fruits were promoted by &ldquo:Armstrong&rdquo:. The results highlight the influence of rootstock genotype on the nutraceutical and sensorial profile of &ldquo:Sir Elyan&rdquo: fruits harvested at early ripening stages.
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