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. 2020 Nov 25;9(12):1729.
doi: 10.3390/foods9121729.

Effects of Genotype, Storage Temperature and Time on Quality and Compositional Traits of Cherry Tomato

Miriam Distefano  1 , Elena Arena  1 , Rosario Paolo Mauro  1 , Selina Brighina  1 , Cherubino Leonardi  1 , Biagio Fallico  1 , Francesco Giuffrida  1
Affiliations

Effects of Genotype, Storage Temperature and Time on Quality and Compositional Traits of Cherry Tomato

Miriam Distefano et al. Foods. .

Abstract

The experiment addressed the effects of two storage temperatures, namely 10 (T10) and 20 °C (T20), on main quality and functional traits of three cherry tomato cultivars ('Eletta', 'Sugarland' and 'Ottymo'), after 0 (S0), 7 (S7) and 14 (S14) days of storage. At T10 both fruit weight and firmness were better retained during storage. At S14, T10 promoted fruit Chroma and overall fruit color deviation (ΔE*ab). Total polyphenols content (TPC) of fruits peaked at S7 (4660 mg GAE kg-1 DW) then declined at S14 (by 16%), with the highest values recorded at T10. Lycopene showed a similar trend, but with a higher average concentration recorded at T20 (488 mg kg-1 DW). β-carotene content peaked at S14, irrespective of the storage temperature. At S14, the concentrations of phytoene and phytofluene were higher at T20 (48.3 and 40.9 mg kg-1 DW, respectively), but the opposite was found at S7. 'Sugarland' and 'Ottymo' showed the highest ΔE*ab along storage, with the former cultivar proving the highest TPC and lycopene content, whereas 'Eletta' did so for phytoene and phytofluene. Our results suggest that unravelling the possible functional interactions among these three carotenoids would allow for a better orientation of breeding programs, targeting the phytochemical evolution of tomatoes during refrigerated storage.

Keywords: Solanum lycopersicum L.; carotenoids; fruit quality; refrigerated storage; total polyphenols content.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Average fruit weight (A), fruit dry matter (B), reducing sugars content (C), SSC/TA (D) and ΔE*ab (E) as affected by ‘genotype × storage time’ interaction. Black bars: S0; grey bars: S7; white bars S14.
Figure 2
Figure 2
HPLC profile of carotenoids extracted from cherry tomato ‘Sugarland’ at harvest date (S0).
Figure 3
Figure 3
Total polyphenols (A), phytoene (B), phytofluene (C), lycopene (D) and β-carotene (E) content as affected by ‘genotype × storage time’ interaction. Black bars: S0; grey bars: S7; white bars S14.
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