Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications
Despite their widespread application in food packaging, petroleum-based plastics contribute toward several environmental problems throughout their life cycle. Paper is considered a sustainable packaging material; however, its poor gas and water-vapor barrier properties limit its application in the f...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Future Foods |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666833525000292 |
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| author | Jihyeon Hwang Yeon-Ji Jo Dowan Kim |
| author_facet | Jihyeon Hwang Yeon-Ji Jo Dowan Kim |
| author_sort | Jihyeon Hwang |
| collection | DOAJ |
| description | Despite their widespread application in food packaging, petroleum-based plastics contribute toward several environmental problems throughout their life cycle. Paper is considered a sustainable packaging material; however, its poor gas and water-vapor barrier properties limit its application in the food industry. In this study, papers coated with bio-based sodium caseinate (CasNa) and cardanol (CL), a plasticizer, are prepared as a sustainable food packing material. The morphological and chemical structure, mechanical properties, oxygen and water-vapor permeability, and thermal stability of pristine CasNa- and CasNa/CL-coated papers are investigated based on their CL content. CL incorporation into the CasNa matrix disrupts the robust physical interactions of CasNa, increasing the flexibility of CasNa-coated papers. Consequently, with increasing CL content, the hydrophobicity of the CasNa/CL-coated papers is enhanced with a reduction in the water-vapor transmittance rate from 461.3 ± 2.0 to 389.8 ± 3.9 g/m2·day and an increase in the water contact angle from 56.6 ± 2.4° to 72.9 ± 1.1°. Notably, the taste and flavor of coffee packaged with commercial and CasNa/CL (100 %)-coated coffee drip bags are similar, possibly owing to the good gas barrier properties of the CasNa/CL-coated papers. Therefore, this study proposes a bio-based green alternative to petroleum-based plastics that is expected to exhibit wide commercial applicability in packaging. Moreover, the results of this study could open new frontiers in sustainable food packaging. |
| format | Article |
| id | doaj-art-6b223c0a0a3d404f949b93ff1728343d |
| institution | Kabale University |
| issn | 2666-8335 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Future Foods |
| spelling | doaj-art-6b223c0a0a3d404f949b93ff1728343d2025-02-12T05:32:59ZengElsevierFuture Foods2666-83352025-06-0111100567Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applicationsJihyeon Hwang0Yeon-Ji Jo1Dowan Kim2Department of Food Processing & Distribution, College of Life Science, Gangneung-Wonju National University, 25457, Republic of KoreaDepartment of Food Processing & Distribution, College of Life Science, Gangneung-Wonju National University, 25457, Republic of Korea; Department of Marine Bio Food Science, College of Life Science, Gangneung-Wonju National University, 25457, Republic of Korea; Haeram Institute of Bakery Science, Gangneung-Wonju National University, Republic of KoreaDepartment of Food Processing & Distribution, College of Life Science, Gangneung-Wonju National University, 25457, Republic of Korea; Department of Marine Bio Food Science, College of Life Science, Gangneung-Wonju National University, 25457, Republic of Korea; Haeram Institute of Bakery Science, Gangneung-Wonju National University, Republic of Korea; Corresponding author at: Department of Marine Bio Food Science, College of Life Science, Gangneung-Wonju National University, 25457, Republic of Korea.Despite their widespread application in food packaging, petroleum-based plastics contribute toward several environmental problems throughout their life cycle. Paper is considered a sustainable packaging material; however, its poor gas and water-vapor barrier properties limit its application in the food industry. In this study, papers coated with bio-based sodium caseinate (CasNa) and cardanol (CL), a plasticizer, are prepared as a sustainable food packing material. The morphological and chemical structure, mechanical properties, oxygen and water-vapor permeability, and thermal stability of pristine CasNa- and CasNa/CL-coated papers are investigated based on their CL content. CL incorporation into the CasNa matrix disrupts the robust physical interactions of CasNa, increasing the flexibility of CasNa-coated papers. Consequently, with increasing CL content, the hydrophobicity of the CasNa/CL-coated papers is enhanced with a reduction in the water-vapor transmittance rate from 461.3 ± 2.0 to 389.8 ± 3.9 g/m2·day and an increase in the water contact angle from 56.6 ± 2.4° to 72.9 ± 1.1°. Notably, the taste and flavor of coffee packaged with commercial and CasNa/CL (100 %)-coated coffee drip bags are similar, possibly owing to the good gas barrier properties of the CasNa/CL-coated papers. Therefore, this study proposes a bio-based green alternative to petroleum-based plastics that is expected to exhibit wide commercial applicability in packaging. Moreover, the results of this study could open new frontiers in sustainable food packaging.http://www.sciencedirect.com/science/article/pii/S2666833525000292Sodium caseinateCardanolPaper coating materialsPlasticizing effectBio-based materialCoffee packaging |
| spellingShingle | Jihyeon Hwang Yeon-Ji Jo Dowan Kim Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications Future Foods Sodium caseinate Cardanol Paper coating materials Plasticizing effect Bio-based material Coffee packaging |
| title | Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications |
| title_full | Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications |
| title_fullStr | Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications |
| title_full_unstemmed | Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications |
| title_short | Effect of cardanol on the physical and chemical properties of sodium caseinate-coated papers for packaging applications |
| title_sort | effect of cardanol on the physical and chemical properties of sodium caseinate coated papers for packaging applications |
| topic | Sodium caseinate Cardanol Paper coating materials Plasticizing effect Bio-based material Coffee packaging |
| url | http://www.sciencedirect.com/science/article/pii/S2666833525000292 |
| work_keys_str_mv | AT jihyeonhwang effectofcardanolonthephysicalandchemicalpropertiesofsodiumcaseinatecoatedpapersforpackagingapplications AT yeonjijo effectofcardanolonthephysicalandchemicalpropertiesofsodiumcaseinatecoatedpapersforpackagingapplications AT dowankim effectofcardanolonthephysicalandchemicalpropertiesofsodiumcaseinatecoatedpapersforpackagingapplications |