Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products
Synthetic packaging is being replaced by biodegradable packaging through the revalorization of food industry by-products. The olive oil (OO) industry, known for producing large quantities of antioxidant-rich by-products, can be a major supplier for sustainable packaging materials. This study aims to...
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MDPI AG
2024-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/1/312 |
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| author | Assamae Chabni Celia Bañares Irene Sanchez-Rey Carlos F. Torres |
| author_facet | Assamae Chabni Celia Bañares Irene Sanchez-Rey Carlos F. Torres |
| author_sort | Assamae Chabni |
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| description | Synthetic packaging is being replaced by biodegradable packaging through the revalorization of food industry by-products. The olive oil (OO) industry, known for producing large quantities of antioxidant-rich by-products, can be a major supplier for sustainable packaging materials. This study aims to valorize a food-grade by-product (defatted flour, DF) from OO extraction produced using a zero-waste strategy that combines expeller press technology and supercritical CO<sub>2</sub> extraction. DF and its aqueous extract (DFE) were combined with carboxymethylcellulose (CMC) to create biodegradable bioactive packaging films. DF contains a high content of insoluble dietary fiber (28.4%) and total phenolic compounds (35,000 ppm), including oleuropein, elenolic acid, hydroxytyrosol, and tyrosol (4324, 3603, 1525, and 157 ppm, respectively). This study examined the effects of DF and DFE on the physicochemical and barrier properties of the films, as well as their capacity to delay oxidation in polyunsaturated fatty acid-rich oil. Films with DF and DFE contained high phenolic content (1500 and 1200 ppm, respectively), and their inclusion improved ultraviolet visible barrier capacity. Additionally, oil oxidation was slower when protected by DF- and DFE-based films than when protected with CMC film alone. This allows their use as protective packaging and potential carriers of bioactive oils to enhance the nutritional and functional qualities of packaged foods. |
| format | Article |
| id | doaj-art-f784752a56c64ae58792d1080da7c35d |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-f784752a56c64ae58792d1080da7c35d2025-01-10T13:15:07ZengMDPI AGApplied Sciences2076-34172024-12-0115131210.3390/app15010312Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-ProductsAssamae Chabni0Celia Bañares1Irene Sanchez-Rey2Carlos F. Torres3Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera 9, Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, SpainDepartment of Bioactivity and Food Analysis, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera 9, Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, SpainDepartment of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera 9, Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, SpainDepartment of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera 9, Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, SpainSynthetic packaging is being replaced by biodegradable packaging through the revalorization of food industry by-products. The olive oil (OO) industry, known for producing large quantities of antioxidant-rich by-products, can be a major supplier for sustainable packaging materials. This study aims to valorize a food-grade by-product (defatted flour, DF) from OO extraction produced using a zero-waste strategy that combines expeller press technology and supercritical CO<sub>2</sub> extraction. DF and its aqueous extract (DFE) were combined with carboxymethylcellulose (CMC) to create biodegradable bioactive packaging films. DF contains a high content of insoluble dietary fiber (28.4%) and total phenolic compounds (35,000 ppm), including oleuropein, elenolic acid, hydroxytyrosol, and tyrosol (4324, 3603, 1525, and 157 ppm, respectively). This study examined the effects of DF and DFE on the physicochemical and barrier properties of the films, as well as their capacity to delay oxidation in polyunsaturated fatty acid-rich oil. Films with DF and DFE contained high phenolic content (1500 and 1200 ppm, respectively), and their inclusion improved ultraviolet visible barrier capacity. Additionally, oil oxidation was slower when protected by DF- and DFE-based films than when protected with CMC film alone. This allows their use as protective packaging and potential carriers of bioactive oils to enhance the nutritional and functional qualities of packaged foods.https://www.mdpi.com/2076-3417/15/1/312antioxidant capacitycarboxymethylcellulosefood packaginggreen extraction technologieslipid oxidationolive by-products |
| spellingShingle | Assamae Chabni Celia Bañares Irene Sanchez-Rey Carlos F. Torres Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products Applied Sciences antioxidant capacity carboxymethylcellulose food packaging green extraction technologies lipid oxidation olive by-products |
| title | Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products |
| title_full | Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products |
| title_fullStr | Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products |
| title_full_unstemmed | Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products |
| title_short | Active Biodegradable Packaging Films Based on the Revalorization of Food-Grade Olive Oil Mill By-Products |
| title_sort | active biodegradable packaging films based on the revalorization of food grade olive oil mill by products |
| topic | antioxidant capacity carboxymethylcellulose food packaging green extraction technologies lipid oxidation olive by-products |
| url | https://www.mdpi.com/2076-3417/15/1/312 |
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