Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’)
The main objective of this study was to extend the shelf life of fresh red raspberry (<i>Rubus idaeus</i>. L. cv. ‘Kweli’) by using active film-pads inside commercial compostable packages. The pads were produced with chitosan (Ch) with the incorporation of green tea (GTE) and rosemary (R...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/11/12/1805 |
| _version_ | 1827660309149515776 |
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| author | Tiago M. Vieira Vítor D. Alves Margarida Moldão Martins |
| author_facet | Tiago M. Vieira Vítor D. Alves Margarida Moldão Martins |
| author_sort | Tiago M. Vieira |
| collection | DOAJ |
| description | The main objective of this study was to extend the shelf life of fresh red raspberry (<i>Rubus idaeus</i>. L. cv. ‘Kweli’) by using active film-pads inside commercial compostable packages. The pads were produced with chitosan (Ch) with the incorporation of green tea (GTE) and rosemary (RSME) ethanolic extracts as natural antifungal agents. Pads were placed on the bottom of commercial fruit trays underneath the fruits, and the trays were heat-sealed with a polyacid lactic (PLA) film. Preservation studies were carried out over 14 days of storage at refrigeration temperature (4 °C). Raspberry samples were periodically analyzed throughout storage, in terms of quality attributes (fungal decay, weight loss, firmness, surface color, pH, total soluble solids), total phenolic content and antioxidant activity. Gas composition inside the packages was also analyzed over time. From the packaging systems tested, the ones with active film-pads Ch + GTE and Ch + RSME were highly effective in reducing fungal growth and decay of raspberry during storage, showing only around 13% and 5% of spoiled fruits after 14 days, respectively, in contrast with the packages without pads (around 80% of spoiled fruits detected). In addition, fruits preserved using packages with Ch + RSME active film-pads showed lower mass loss (5.6%), decreased firmness (3.7%) and reduced antioxidant activity (around 9% and 15% for DPPH and FRAP methods, respectively). This sustainable packaging presents a potential strategy for the preservation of raspberries and other highly perishable small fruits. |
| first_indexed | 2024-03-09T23:48:59Z |
| format | Article |
| id | doaj.art-b148aeea12324ffca340ab4e9ad21f95 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-09T23:48:59Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-b148aeea12324ffca340ab4e9ad21f952023-11-23T16:39:19ZengMDPI AGFoods2304-81582022-06-011112180510.3390/foods11121805Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’)Tiago M. Vieira0Vítor D. Alves1Margarida Moldão Martins2LEAF—Linking Landscape, Environment, Agriculture and Food, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisbon, PortugalLEAF—Linking Landscape, Environment, Agriculture and Food, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisbon, PortugalLEAF—Linking Landscape, Environment, Agriculture and Food, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisbon, PortugalThe main objective of this study was to extend the shelf life of fresh red raspberry (<i>Rubus idaeus</i>. L. cv. ‘Kweli’) by using active film-pads inside commercial compostable packages. The pads were produced with chitosan (Ch) with the incorporation of green tea (GTE) and rosemary (RSME) ethanolic extracts as natural antifungal agents. Pads were placed on the bottom of commercial fruit trays underneath the fruits, and the trays were heat-sealed with a polyacid lactic (PLA) film. Preservation studies were carried out over 14 days of storage at refrigeration temperature (4 °C). Raspberry samples were periodically analyzed throughout storage, in terms of quality attributes (fungal decay, weight loss, firmness, surface color, pH, total soluble solids), total phenolic content and antioxidant activity. Gas composition inside the packages was also analyzed over time. From the packaging systems tested, the ones with active film-pads Ch + GTE and Ch + RSME were highly effective in reducing fungal growth and decay of raspberry during storage, showing only around 13% and 5% of spoiled fruits after 14 days, respectively, in contrast with the packages without pads (around 80% of spoiled fruits detected). In addition, fruits preserved using packages with Ch + RSME active film-pads showed lower mass loss (5.6%), decreased firmness (3.7%) and reduced antioxidant activity (around 9% and 15% for DPPH and FRAP methods, respectively). This sustainable packaging presents a potential strategy for the preservation of raspberries and other highly perishable small fruits.https://www.mdpi.com/2304-8158/11/12/1805antifungal active packagingraspberrychitosangreen tea extractrosemary extract |
| spellingShingle | Tiago M. Vieira Vítor D. Alves Margarida Moldão Martins Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’) Foods antifungal active packaging raspberry chitosan green tea extract rosemary extract |
| title | Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’) |
| title_full | Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’) |
| title_fullStr | Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’) |
| title_full_unstemmed | Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’) |
| title_short | Application of an Eco-Friendly Antifungal Active Package to Extend the Shelf Life of Fresh Red Raspberry (<i>Rubus idaeus</i> L. cv. ‘Kweli’) |
| title_sort | application of an eco friendly antifungal active package to extend the shelf life of fresh red raspberry i rubus idaeus i l cv kweli |
| topic | antifungal active packaging raspberry chitosan green tea extract rosemary extract |
| url | https://www.mdpi.com/2304-8158/11/12/1805 |
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