Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties

More than ten thousand apple cultivars with high variability in the quality traits and year-round availability place apples at the forefront of consumed fruits. Yet consumers and producers alike are still looking for new apple cultivars with specific quality attributes such as plant resistance to bi...

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Main Authors: Monika Sawicka, Piotr Latocha, Barbara Łata
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Agriculture
Subjects:
Online Access:https://www.mdpi.com/2077-0472/13/2/478
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author Monika Sawicka
Piotr Latocha
Barbara Łata
author_facet Monika Sawicka
Piotr Latocha
Barbara Łata
author_sort Monika Sawicka
collection DOAJ
description More than ten thousand apple cultivars with high variability in the quality traits and year-round availability place apples at the forefront of consumed fruits. Yet consumers and producers alike are still looking for new apple cultivars with specific quality attributes such as plant resistance to biotic and abiotic stresses as well as a high health-promoting potential. The model plants were three cultivars: a new ‘Chopin’ and an old ‘Granny Smith’, scab resistant cultivars with green peel, and a red-skinned cultivar ‘Gala Schniga’. Apple peel and flesh were analyzed separately during two growing seasons: 2016 and 2017. The total ascorbate and phenolics as well as individual phenolic compounds, such as (+)-catechin, (−)-epicatechin, chlorogenic acid, phloridzin, and rutin concentrations, proved to be highly tissue-type and cultivar dependent. The apple of the ‘Chopin’ and ‘Granny Smith’ cultivars expressed much lower skin-to-flesh antioxidant potential differences as compared to ‘Gala Schniga’. The lowest differences between tissue types were observed in the case of chlorogenic acid and flavan-3-ols, followed by total phenolics and ascorbate concentrations. Except for phloridzin, ‘Gala Schniga’ exhibited the highest differences in global and individual phenolic compound concentrations as well as total antioxidant capacity between the apple peel and flesh. ‘Chopin’ was definitely distinguished by the highest concentration of ascorbate in both the peel and the flesh and expressed a higher concentration of flavanols, especially compared to ‘Granny Smith’. In contrast to ‘Gala Schniga’, ‘Chopin’ was richer in chlorogenic acid, (+)-catechin, and (−)-epicatechin in the flesh. The total antioxidant capacity of the green-peel apple cultivars was similar to that of the red-peel one. A narrower range of differences between the concentration of antioxidants in apple peel and flesh could mean better health-promoting properties and might be related to a greater resistance to environmental stress factors.
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spelling doaj.art-c1989a745f3b4a0aa1405be278a252262023-11-16T18:31:46ZengMDPI AGAgriculture2077-04722023-02-0113247810.3390/agriculture13020478Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional PropertiesMonika Sawicka0Piotr Latocha1Barbara Łata2Section of Basic Research in Horticulture, Department of Plant Protection, Institute of Horticultural Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, PolandDepartment of Environmental Protection and Dendrology, Institute of Horticultural Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, PolandSection of Basic Research in Horticulture, Department of Plant Protection, Institute of Horticultural Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, PolandMore than ten thousand apple cultivars with high variability in the quality traits and year-round availability place apples at the forefront of consumed fruits. Yet consumers and producers alike are still looking for new apple cultivars with specific quality attributes such as plant resistance to biotic and abiotic stresses as well as a high health-promoting potential. The model plants were three cultivars: a new ‘Chopin’ and an old ‘Granny Smith’, scab resistant cultivars with green peel, and a red-skinned cultivar ‘Gala Schniga’. Apple peel and flesh were analyzed separately during two growing seasons: 2016 and 2017. The total ascorbate and phenolics as well as individual phenolic compounds, such as (+)-catechin, (−)-epicatechin, chlorogenic acid, phloridzin, and rutin concentrations, proved to be highly tissue-type and cultivar dependent. The apple of the ‘Chopin’ and ‘Granny Smith’ cultivars expressed much lower skin-to-flesh antioxidant potential differences as compared to ‘Gala Schniga’. The lowest differences between tissue types were observed in the case of chlorogenic acid and flavan-3-ols, followed by total phenolics and ascorbate concentrations. Except for phloridzin, ‘Gala Schniga’ exhibited the highest differences in global and individual phenolic compound concentrations as well as total antioxidant capacity between the apple peel and flesh. ‘Chopin’ was definitely distinguished by the highest concentration of ascorbate in both the peel and the flesh and expressed a higher concentration of flavanols, especially compared to ‘Granny Smith’. In contrast to ‘Gala Schniga’, ‘Chopin’ was richer in chlorogenic acid, (+)-catechin, and (−)-epicatechin in the flesh. The total antioxidant capacity of the green-peel apple cultivars was similar to that of the red-peel one. A narrower range of differences between the concentration of antioxidants in apple peel and flesh could mean better health-promoting properties and might be related to a greater resistance to environmental stress factors.https://www.mdpi.com/2077-0472/13/2/478<i>Malus domestica</i> borkh.flavan-3-olsrutinchlorogenic acidascorbatetrolox equivalent antioxidant capacity
spellingShingle Monika Sawicka
Piotr Latocha
Barbara Łata
Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties
Agriculture
<i>Malus domestica</i> borkh.
flavan-3-ols
rutin
chlorogenic acid
ascorbate
trolox equivalent antioxidant capacity
title Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties
title_full Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties
title_fullStr Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties
title_full_unstemmed Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties
title_short Peel to Flesh Bioactive Compounds Ratio Affect Apple Antioxidant Potential and Cultivar Functional Properties
title_sort peel to flesh bioactive compounds ratio affect apple antioxidant potential and cultivar functional properties
topic <i>Malus domestica</i> borkh.
flavan-3-ols
rutin
chlorogenic acid
ascorbate
trolox equivalent antioxidant capacity
url https://www.mdpi.com/2077-0472/13/2/478
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AT barbarałata peeltofleshbioactivecompoundsratioaffectappleantioxidantpotentialandcultivarfunctionalproperties