Chemico-Biological Characterization of Torpedino Di Fondi^® Tomato Fruits: A Comparison with San Marzano Cultivar at Two Ripeness Stages

• Main Authors: Cinzia Ingallina, Alessandro Maccelli, Mattia Spano, Giacomo Di Matteo, Antonella Di Sotto, Anna Maria Giusti, Giuliana Vinci, Silvia Di Giacomo, Mattia Rapa, Salvatore Ciano, Caterina Fraschetti, Antonello Filippi, Giovanna Simonetti, Carlos Cordeiro, Marta Sousa Silva, Maria Elisa Crestoni, Anatoly P. Sobolev, Simonetta Fornarini, Luisa Mannina
• Format: Article
• Language: English
• Published: MDPI AG 2020-10-01
• Series: Antioxidants
• Subjects: tomatoes; NMR spectroscopy; FT-ICR mass spectrometry; ripening stage; phenolics; antioxidant activity
• Online Access: https://www.mdpi.com/2076-3921/9/10/1027

Torpedino di Fondi (TF) is a hybrid tomato landrace developed in Sicily and recently introduced in the south Lazio area along with the classical San Marzano (SM) cultivar. The present study aimed at characterizing TF tomatoes at both pink and red ripening stages, and at comparing them with traditional SM tomatoes. A multidisciplinary approach consisting of morphological, chemical (FT-ICR MS, NMR, HPLC, and spectrophotometric methods), and biological (antioxidant and antifungal in vitro activity) analyses was applied. Morphological analysis confirmed the mini-San Marzano nature and the peculiar crunchy and solid consistency of TF fruits. Pink TF tomatoes displayed the highest content of hydrophilic antioxidants, like total polyphenols (0.192 mg/g), tannins (0.013 mg/g), flavonoids (0.204 mg/g), and chlorophylls a (0.344 mg/g) and b (0.161 mg/g), whereas red TF fruits were characterized by the highest levels of fructose (3000 mg/100 g), glucose (2000 mg/100 g), tryptophan (2.7 mg/100 g), phenylalanine (13 mg/100 g), alanine (25 mg/100 g), and total tri-unsaturated fatty acids (13% mol). Red SM fruits revealed the greatest content of lipophilic antioxidants, with 1234 mg/g of total carotenoids. In agreement with phenolics content, TF cultivar showed the greatest antioxidant activity. Lastly, red TF inhibited <i>Candida </i>species (<i>albicans</i>, <i>glabrata</i> and <i>krusei</i>) growth.