Nutritional and functional profiling of traditional Italian 'San Marzano' tomatoes
The preservation of local landraces represents a crucial point in biodiversity maintenance and it necessarily starts from a qualitative and morphological characterization. The San Marzano tomato (Solanum lycopersicum L.) is an elongated fruit cultivar particularly suitable for processing and represents one of the most significant horticultural products for the Italian food industry. Five San Marzano landraces (SM Bellizzi 1, SM Bellizzi 2, SM Bellizzi 3, SM Montoro Inferiore and SM Sarno) characterized by different fruit shapes (pointed, round and hollow) were compared in terms of yield, nutritional and functional quality. The fruit dry matter percentage as well as the juice EC ranged from 4.94 to 7.10% and from 3.04 to 3.80 dS m‑1, respectively, with the lowest values observed in SM Montoro Inferiore. The highest total soluble solids content was recorded in both SM Montoro Inferiore and SM Sarbo, followed by SM Bellizzi 1 and SM Bellizzi 3, whereas the lowest values were observed in both SM Bellizzi 2 and SM Bellizzi 3. Among the three macronutrients analyzed K was the most abundant macro-mineral, followed by phosphorus and finally nitrate. SM Bellizzi 1 was richer in P and K compared to the rest of the landraces tested. The highest levels of hydrophilic and lipophilic antioxidant activities were recorded in SM Sarno and SM Bellizzi 3', respectively. Our findings will contribute toward the documentation of nutritional and functional quality profiles of an important collection of niche products such as the SM tomato.
Raimondi, G., Di Stasio, E., Barbieri, G., Rouphael, Y. and De Pascale, S. (2021). Nutritional and functional profiling of traditional Italian 'San Marzano' tomatoes. Acta Hortic. 1320, 65-70
agrobiodiversity, lycopene, local landraces, antioxidant activity, total soluble solids, Solanum lycopersicum L