Original scientific paper

https://doi.org/10.15255/KUI.2022.073

Influence of Cold Storage on Quality of Croatian Traditional Apple Cultivars

Ante Lončarić orcid.org/0000-0002-3573-8107 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia
Ana-Marija Gotal Skoko ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia
Ivana Flanjak orcid.org/0000-0003-4545-4228 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia
Antun Jozinović orcid.org/0000-0001-9627-1013 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia
Jurislav Babić orcid.org/0000-0002-6453-1850 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia
Ivana Tomac ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia
Marin Mihaljević Žulj ; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, 10 000 Zagreb, Croatia
Goran Fruk ; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, 10 000 Zagreb, Croatia
Martina Skendrović Babojelić orcid.org/0000-0002-8929-1216 ; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, 10 000 Zagreb, Croatia
Bojan Šarkanj ; University North, Department of Food Technology, Trg dr. Žarka Dolinara 1, 48 000 Koprivnica, Croatia
Tihomir Kovač orcid.org/0000-0003-3222-4722 ; Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, 31 000 Osijek, Croatia

Abstract

The aim of this work was to investigate the influence of cold storage at 2 °C for 180 days on water content, total acids, reducing and total sugar, antioxidant activity, polyphenol oxidase activity, and polyphenol profile of three Croatian traditional apple cultivars (‘Kanadska Reneta’, ‘Ilzer Rosenapfel’, ‘Wagener’). A significant variation in polyphenol profile of apple cultivars under investigation was noted. The most represented polyphenols in all apple cultivars were procyanidin B2 followed by chlorogenic acid, epigallocatechin, epicatechin, and phloridzin. After storage, the content of procyanidin B2 and chlorogenic acid was higher, while content of epigallocatechin after storage was lower in all investigated apple cultivars. Water content before storage ranged between 79.17 and 80.76 %, and after storage between 75.62 and 78.56 %. Total acids, polyphenol oxidase activity, and flavonoids had decreased during storage, while reducing and total sugar content was higher after storage. Moreover, after storage, cultivar ‘Kanadska Reneta’ had the highest antioxidant activity measured by both ABTS and DPPH methods, 1.65 and 0.70 mmol trolox kg–1, respectively. A significant variation in polyphenol profile of apple cultivars under investigation was noted. The most represented polyphenols in all apple cultivars were procyanidin B2, followed by chlorogenic acid, epigallocatechin, epicatechin, and phloridzin. After storage, the content of procyanidin B2 and chlorogenic acid was higher, while content of epigallocatechin after storage was lower in all investigated apple cultivars. Overall, it can be concluded that investigated apple cultivars, after storage, preserved most of the antioxidants and functional properties.

Keywords

Kanadska Reneta; Ilzer Rosenapfel; Wagener; polyphenol profile; antioxidant activity

Hrčak ID:

301959

URI

https://hrcak.srce.hr/301959

Publication date:

17.5.2023.

Article data in other languages: croatian

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