Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques

Stinging nettle (Urtica dioica L.) is a highly nutritious plant, as it contains a variety of phytochemicals that contribute to the health-promoting properties of the human organism. However, preserving these valuable compounds and maintaining the organoleptic properties of fresh nettle leaves over a...

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Main Authors: Mia Dujmović, Mia Kurek, Zdenko Mlinar, Sanja Radman, Nevena Opačić, Sandra Voća, Jana Šic Žlabur
Format: Article
Language:English
Published: Elsevier 2025-06-01
Series:Applied Food Research
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Online Access:http://www.sciencedirect.com/science/article/pii/S2772502225000277
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author Mia Dujmović
Mia Kurek
Zdenko Mlinar
Sanja Radman
Nevena Opačić
Sandra Voća
Jana Šic Žlabur
author_facet Mia Dujmović
Mia Kurek
Zdenko Mlinar
Sanja Radman
Nevena Opačić
Sandra Voća
Jana Šic Žlabur
author_sort Mia Dujmović
collection DOAJ
description Stinging nettle (Urtica dioica L.) is a highly nutritious plant, as it contains a variety of phytochemicals that contribute to the health-promoting properties of the human organism. However, preserving these valuable compounds and maintaining the organoleptic properties of fresh nettle leaves over a certain period of time is a problem given their perishable nature. Therefore, modified atmosphere packaging and the selection of polymeric materials during the 14-day storage period were investigated as possible strategies for the preservation of the bioactive compounds of fresh nettle leaves. Two packaging materials, biaxially oriented polypropylene (BOPP) and low-density polyethylene (LDPE), and different gas compositions of the modified atmosphere: (A) – 5% O2 and 5% CO2; (B) – 5% O2 and 10% CO2, were tested. The control samples were packaged in packaging materials without modification of the atmosphere. The content of ascorbic acid, phenolic compounds, photosynthetic pigments and the antioxidant capacity of fresh nettle leaves were investigated after 7 and 14 days of storage of nettle in the cold (temperature 4°C). The results show a strong influence of the modified atmosphere, the packaging material and the storage time on the bioactive components of the nettle. The highest content of ascorbic acid (91.85 mg/100 g) was found in samples stored for 7 days in LDPE and 5% O2 and 5% CO2. The highest content of total phenolic compounds (635.8 mg/100 g) and caffeoylmalic acid (469.75 mg/100 g) and the highest antioxidant capacity according to the ABTS method were found in samples stored in BOPP and 5% O2 and 5% CO2 for 7 days.
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issn 2772-5022
language English
publishDate 2025-06-01
publisher Elsevier
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series Applied Food Research
spelling doaj-art-b483da207e4843f198a7e13b4f2b193e2025-02-02T05:29:32ZengElsevierApplied Food Research2772-50222025-06-0151100717Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniquesMia Dujmović0Mia Kurek1Zdenko Mlinar2Sanja Radman3Nevena Opačić4Sandra Voća5Jana Šic Žlabur6University of Zagreb Faculty of Agriculture, Svetošimunska Cesta 25, Zagreb 10000, CroatiaUniversity of Zagreb Faculty of Food Technology and Biotechnology, Pierottijeva 6, Zagreb 10000, Croatia; Corresponding author.Teaching Institute of Public Health “Dr. Andrija Štampar”, Mirogojska 16, Zagreb 10000, CroatiaUniversity of Zagreb Faculty of Agriculture, Svetošimunska Cesta 25, Zagreb 10000, CroatiaUniversity of Zagreb Faculty of Agriculture, Svetošimunska Cesta 25, Zagreb 10000, CroatiaUniversity of Zagreb Faculty of Agriculture, Svetošimunska Cesta 25, Zagreb 10000, CroatiaUniversity of Zagreb Faculty of Agriculture, Svetošimunska Cesta 25, Zagreb 10000, CroatiaStinging nettle (Urtica dioica L.) is a highly nutritious plant, as it contains a variety of phytochemicals that contribute to the health-promoting properties of the human organism. However, preserving these valuable compounds and maintaining the organoleptic properties of fresh nettle leaves over a certain period of time is a problem given their perishable nature. Therefore, modified atmosphere packaging and the selection of polymeric materials during the 14-day storage period were investigated as possible strategies for the preservation of the bioactive compounds of fresh nettle leaves. Two packaging materials, biaxially oriented polypropylene (BOPP) and low-density polyethylene (LDPE), and different gas compositions of the modified atmosphere: (A) – 5% O2 and 5% CO2; (B) – 5% O2 and 10% CO2, were tested. The control samples were packaged in packaging materials without modification of the atmosphere. The content of ascorbic acid, phenolic compounds, photosynthetic pigments and the antioxidant capacity of fresh nettle leaves were investigated after 7 and 14 days of storage of nettle in the cold (temperature 4°C). The results show a strong influence of the modified atmosphere, the packaging material and the storage time on the bioactive components of the nettle. The highest content of ascorbic acid (91.85 mg/100 g) was found in samples stored for 7 days in LDPE and 5% O2 and 5% CO2. The highest content of total phenolic compounds (635.8 mg/100 g) and caffeoylmalic acid (469.75 mg/100 g) and the highest antioxidant capacity according to the ABTS method were found in samples stored in BOPP and 5% O2 and 5% CO2 for 7 days.http://www.sciencedirect.com/science/article/pii/S2772502225000277Modified atmosphere packagingActive modified atmospherePreservationStorageSpecialized metabolitesAscorbic acid
spellingShingle Mia Dujmović
Mia Kurek
Zdenko Mlinar
Sanja Radman
Nevena Opačić
Sandra Voća
Jana Šic Žlabur
Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques
Applied Food Research
Modified atmosphere packaging
Active modified atmosphere
Preservation
Storage
Specialized metabolites
Ascorbic acid
title Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques
title_full Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques
title_fullStr Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques
title_full_unstemmed Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques
title_short Enhancing bioactive compound stability of stinging nettle (Urtica dioica L.) leaves via advanced packaging techniques
title_sort enhancing bioactive compound stability of stinging nettle urtica dioica l leaves via advanced packaging techniques
topic Modified atmosphere packaging
Active modified atmosphere
Preservation
Storage
Specialized metabolites
Ascorbic acid
url http://www.sciencedirect.com/science/article/pii/S2772502225000277
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