Varijabilnost kvalitativnih parametara u zavisnosti od boje ploda paradajza

Abstract

Cilj ovog istraživanja bio je da se uradi procena kvaliteta plodova paradajza različitih boja. Za analizu je odabrano sedam genotipova paradajza (svetložuti, tamnožuti, narandžasti, žuto-zeleni, crveno-zeleni, crveno-žuti i crveni). Kvalitet plodova paradajza je okarakterisan na osnovu ukupne rastvorljive čvrste materije (TSS), titrabilne kiselosti (TA), sadržaja likopena i ukupne antioksidativne aktivnosti (TAA). Dobijeni rezultati su pokazali da ima značajnih razlika između testiranih genotipova u analiziranim parametrima. Genotip sa žuto-zelenim plodom imao je najbolji ukus zbog visokih vrednosti TSS, TA i njihovog odnosa (indeksa ukusa), ali nizak sadržaj likopena i TAA. Najveću vrednost TAA imao je genotip sa svetložutom bojom ploda, verovatno zbog prisustva ß-karotena i nekih antioksidanata iz grupe polifenola, jer je sadržaj likopena bio nizak. Takođe, visoke vrednosti TAA imali su genotipovi sa crvenom bojom ploda i kombinacijom crvene sa zelenom i žutom bojom, zbog visokog sadržaja likopena.

The aim of this study was to evaluate the quality of tomato fruits of different colors. Seven tomato genotypes (light yellow, dark yellow, orange, yellow green, red green, red yellow and red) were selected for analysis. Tomato fruit quality was characterized based on total soluble solids (TSS), titratable acidity (TA), lycopene content and total antioxidant activity (TAA). The obtained results showed that there are significant differences between the tested genotypes in the analyzed parameters. The genotype with yellow green fruit had the best taste due to the high values of TSS, TA and their ratio (taste index), but low content of lycopene and TAA. The genotype with light yellow fruit color had the highest TAA value, probably due to the presence of ß-carotene and some antioxidants from the polyphenol group, as the lycopene content was low. Genotypes with red fruit color and a combination of red with green and yellow color also had high TAA values, due to the high lycopene content.