Abstract
In this study, nutritional composition (protein, lipids, carbohydrates, ash, and moisture), physicochemical properties (soluble solid content, titratable acidity, texture and instrumental colour on surface, and internal section), phytochemicals (total phenolic content and anthocyanin content), and antioxidant capacity (DPPH—2,2′-diphenyl-1-picrylhydrazyl radical scavenging capacity and ferric-reducing antioxidant power) of three strawberry (Fragaria × ananassa Duch.) cultivars (cv. “Primoris”, cv. “Endurance”, and cv. “Portola”) produced in the western region of Portugal (Caldas da Rainha) were evaluated. From the obtained, results no significant differences (P > 0.05) in nutritional composition were detected in all of the cultivars; with the exception of lower protein content observed in cv. “Portola” (0.57 g/100 g ± 0.04; P < 0.05). Regarding the a* value of whole strawberry fruits, no significant differences (P > 0.05) were found in any of the cultivars, which revealed a similar redness. The cv. “Endurance” revealed the highest bioactivity content compared to the other cultivars. Overall, these results provide important information about the high quality of strawberry produced in the western region of Portugal and may be used as a tool for adding value to a functional food in the Mediterranean diet due to the phytochemical composition and nutritional value of strawberry fruits
Highlights
Strawberry fruits (Fragaria × ananassa Duch.) belong to the family of Rosaceae and genusFragaria, and the growing area has been increasing all over the world
This evaluation was performed taking into account the Portuguese Regulation, Ministerial Order No 90 (1988) [14], concerning strawberry quality for consumption
The correlation between titratable acidity and soluble solid content in different strawberry cultivar was analysed, and the results showed that both quality parameters were positive correlated with coefficient R2 = 0.6910 (P = 0.0001)
Summary
Strawberry fruits (Fragaria × ananassa Duch.) belong to the family of Rosaceae and genusFragaria, and the growing area has been increasing all over the world. In Portugal, strawberry production increased from about 2600 tonnes in 2007 to 9347 tonnes in 2017 [1], with the western region being one of the most representative areas for strawberry growing, along with Ribatejo and Algarve [2]. Strawberry is a fruit belonging to the Mediterranean diet, appreciated for its sensorial quality and described as having a particular aroma and sweetness in flavour combined with an agreeable texture [3,4]. Another interesting fact concerning this berry is that it has been reported to be an effective enhancer of the oxidative stability of foods, with berries being among the best sources of. A combination of vitamin C, folate, and other compounds can be found in this fruit [8]
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