Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs

The beneficial effects of walnuts and walnut products on human health, due primarily to their rich polyphenolic content, have been appreciated as an empirical fact for centuries. The purpose of this study is to determine the polyphenolic contents of liqueurs made from the walnut selections ‘Rasna’ a...

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Main Authors: Kulačanin Dijana, Bijelić Sandra, Šućur Jovana, Bogdanović Borivoje, Ercisli Sezai, Malenčić Đorđe
Format: Article
Language:English
Published: Sciendo 2020-06-01
Series:Contemporary Agriculture
Subjects:
Online Access:https://doi.org/10.2478/contagri-2020-0002
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author Kulačanin Dijana
Bijelić Sandra
Šućur Jovana
Bogdanović Borivoje
Ercisli Sezai
Malenčić Đorđe
author_facet Kulačanin Dijana
Bijelić Sandra
Šućur Jovana
Bogdanović Borivoje
Ercisli Sezai
Malenčić Đorđe
author_sort Kulačanin Dijana
collection DOAJ
description The beneficial effects of walnuts and walnut products on human health, due primarily to their rich polyphenolic content, have been appreciated as an empirical fact for centuries. The purpose of this study is to determine the polyphenolic contents of liqueurs made from the walnut selections ‘Rasna’ and ‘Sava’ and the walnut cultivar ‘Šampion’ (all harvested at three different times), as well as the polyphenolic contents of their green husks. The walnut liqueurs were prepared according to two traditional recipes using young walnut fruits. The highest antioxidant capacity was recorded in the liqueur made from the ‘Rasna’ walnut selection (89.94%), whereas the highest contents of phenols (83.28 mg GAE/g FW), flavonoids (0.83 mg QE/g FW) and proanthocyanidins were found in the liqueur made from the ‘Šampion’ cultivar (14.75 mg CE/g FW). The youngest ‘Rasna’ walnuts, harvested at the first experimental time point, exhibited the highest phenolic and tannin contents, whereas the highest flavonoid content was observed in the ‘Šampion’ cultivar. The biochemical results obtained indicate a decrease in the polyphenolic content of walnut fruits with their growth and development. Moreover, the polyphenolic profiles of the walnut liqueurs considered were found to be greatly affected by the method of preparation and the cultivar/selection of walnuts.
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spelling doaj.art-43e55bd3e6344d5c860d5fd3133a50082022-12-21T21:28:14ZengSciendoContemporary Agriculture2466-47742020-06-01691-251110.2478/contagri-2020-0002contagri-2020-0002Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and LiqueursKulačanin Dijana0Bijelić Sandra1Šućur Jovana2Bogdanović Borivoje3Ercisli Sezai4Malenčić Đorđe5University of Novi Sad, Faculty of Agriculture, Department of Fruit Science, Viticulture, Horticulture and Landscape Architecture, Trg Dositeja Obradovića 8, 21000 Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Agriculture, Department of Fruit Science, Viticulture, Horticulture and Landscape Architecture, Trg Dositeja Obradovića 8, 21000 Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Agriculture, Department of Field and Vegetable Crops, Trg Dositeja Obradovića 8, 21000 Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Agriculture, Department of Fruit Science, Viticulture, Horticulture and Landscape Architecture, Trg Dositeja Obradovića 8, 21000 Novi Sad, SerbiaAtatürk University, Faculty of Agriculture, Department of Horticulture, 25240 Erzurum, TurkeyUniversity of Novi Sad, Faculty of Agriculture, Department of Field and Vegetable Crops, Trg Dositeja Obradovića 8, 21000 Novi Sad, SerbiaThe beneficial effects of walnuts and walnut products on human health, due primarily to their rich polyphenolic content, have been appreciated as an empirical fact for centuries. The purpose of this study is to determine the polyphenolic contents of liqueurs made from the walnut selections ‘Rasna’ and ‘Sava’ and the walnut cultivar ‘Šampion’ (all harvested at three different times), as well as the polyphenolic contents of their green husks. The walnut liqueurs were prepared according to two traditional recipes using young walnut fruits. The highest antioxidant capacity was recorded in the liqueur made from the ‘Rasna’ walnut selection (89.94%), whereas the highest contents of phenols (83.28 mg GAE/g FW), flavonoids (0.83 mg QE/g FW) and proanthocyanidins were found in the liqueur made from the ‘Šampion’ cultivar (14.75 mg CE/g FW). The youngest ‘Rasna’ walnuts, harvested at the first experimental time point, exhibited the highest phenolic and tannin contents, whereas the highest flavonoid content was observed in the ‘Šampion’ cultivar. The biochemical results obtained indicate a decrease in the polyphenolic content of walnut fruits with their growth and development. Moreover, the polyphenolic profiles of the walnut liqueurs considered were found to be greatly affected by the method of preparation and the cultivar/selection of walnuts.https://doi.org/10.2478/contagri-2020-0002flavonoidsphenolsliqueurproanthocyanidingreen husks
spellingShingle Kulačanin Dijana
Bijelić Sandra
Šućur Jovana
Bogdanović Borivoje
Ercisli Sezai
Malenčić Đorđe
Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs
Contemporary Agriculture
flavonoids
phenols
liqueur
proanthocyanidin
green husks
title Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs
title_full Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs
title_fullStr Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs
title_full_unstemmed Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs
title_short Antioxidant Activity and Polyphenolic Profile of Walnut (Juglans regia L.) Green Husks and Liqueurs
title_sort antioxidant activity and polyphenolic profile of walnut juglans regia l green husks and liqueurs
topic flavonoids
phenols
liqueur
proanthocyanidin
green husks
url https://doi.org/10.2478/contagri-2020-0002
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AT sucurjovana antioxidantactivityandpolyphenolicprofileofwalnutjuglansregialgreenhusksandliqueurs
AT bogdanovicborivoje antioxidantactivityandpolyphenolicprofileofwalnutjuglansregialgreenhusksandliqueurs
AT ercislisezai antioxidantactivityandpolyphenolicprofileofwalnutjuglansregialgreenhusksandliqueurs
AT malencicđorđe antioxidantactivityandpolyphenolicprofileofwalnutjuglansregialgreenhusksandliqueurs