Pomological and antioxidant fruit properties of strawberry cultivars grown in Mačva region

Abstract

In this work pomological properties of strawberry cultivars were studied considering ripening time, physical and chemical fruit traits as quality attribute parameters, as well as total antioxidant capacity and total phenolics as nutritional parameters. The above mentioned parameters were used for screening five strawberry cultivars (Clery, Elsanta, Arosa, Marmolada and Madeleine) grown in Mačva region (Šabac). Investigations were carried out during 2008. on the private strawberry field of 'Libertas' company. The earliest ripening time was recorded in cv Clery (07.05.), and the latest in cv Arosa (22.05.). Cv Arosa expressed the highest values of fruit weight (41,2 g) and fruit dimensions, as well as the highest soluble solids content (8,7 %). Cv Marmolada had the highest amounts of total sugars (6,92 %), inverted sugars (6,13 %) and vitamin C (80,9 mg 100g-1 FW). Besides vitamin C, as a strong antioxidant in strawberries, total phenolic content were also detected in the studied cultivars, achieving the highest values in cvs Elsanta (16,8 mg g-1 FW) and Marmolada (16,5 mg g-1 FW). Consequently, these cultivars expressed the highest fruit antioxidant capacity which is of importance not only for maintaining the nutritional value and sensorial fruit quality, but also because of considerable health benefits. Generally, on the base of most studied parameters for commercial growing in Mačva region, we can recommend cvs. Arosa, Marmolada and Elsanta, as well as cv Clery with regard to earliness.

Rad prikazuje rezultate proučavanja pomoloških osobina (vreme zrenja, fizičke i hemijske osobine ploda) i antioksidativnog kapaciteta ploda pet introdukovanih sorti jagode (Marmolada, Arosa, Elsanta, Madlen i Clery) gajenih u regionu Mačve (Šabac). Ispitivanja su izvedena tokom 2008. godine u zasadu jagode koji se nalazi u vlasništvu firme 'Libertas'. Najraniji početak fenofaze zrenja registrovan je kod sorte Clery (07.05.), a najkasniji kod sorte Arosa (22.05.). Sorta Arosa je ispoljila najbolje fizičke osobine ploda, primarno masu ploda (41,2g) i dimenzije, kao i sadržaj rastvorljivih suvih materija (8,7%). Najviše vrednosti sadržaja ukupnih (6,92%) i invertnih šećera (6,13%) registrovane su kod sorte Marmolada, kao i najviši sadržaj vitamina C (80,9 mg 100g-1 sv.m.p.). Pored vitamina C, kao moćnog antioksidanta u plodu jagode, kod ispitivanih sorti je detektovan i sadržaj ukupnih fenola. Najvišim vrednostima odlikuju se sorte Elsanta (16, 8 mg g-1 sv.m.p.) i Marmolada (16,5 mg g-1sv.m.p.), koje su ispoljile i najveći antioksidativni kapacitet ploda, značajan ne samo za očuvanje hranljive vrednosti i senzoričkog kvaliteta ploda, već i sa aspekta zdravstvene korisnosti za ljudski organizam.