Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging
Cashew nut testa, a by-product of cashew nut processing, is abundant in phenolic compounds and exhibits strong antioxidant properties, making it a potential additive for enhancing the antioxidant properties of biodegradable films used in food packaging. This study explores the fabrication of biodegr...
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The Royal Society
2024-12-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.241236 |
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| author | Thuy Tien Dang Lam Anh Thy Nguyen Duc Tien Dau Quy Sinh Nguyen Thao Nhien Le Thi Quynh Ngoc Nguyen |
| author_facet | Thuy Tien Dang Lam Anh Thy Nguyen Duc Tien Dau Quy Sinh Nguyen Thao Nhien Le Thi Quynh Ngoc Nguyen |
| author_sort | Thuy Tien Dang |
| collection | DOAJ |
| description | Cashew nut testa, a by-product of cashew nut processing, is abundant in phenolic compounds and exhibits strong antioxidant properties, making it a potential additive for enhancing the antioxidant properties of biodegradable films used in food packaging. This study explores the fabrication of biodegradable chitosan/polyvinyl alcohol films incorporating varying concentrations of cashew nut testa extract (CNTE; 0, 1, 2 and 3% v/v) and evaluates their physical, structural, mechanical, optical and antioxidant properties. The results demonstrate that increasing extract concentration generally increased the thickness, tensile strength, Young's modulus, thermal stability and antioxidant capacity of the films, while reducing the moisture content, swelling degree, elongation at break, and light transmittance. Specifically, the film with 3% extract showed approximately 11% lower moisture content and 31% lower swelling degree compared with the plain film. It also displayed the highest tensile strength and Young's modulus at 28.63 and 147.35 MPa, respectively. Microstructural analysis revealed that the incorporation of CNTE resulted in a smoother and slightly denser film structure. Antioxidant activity, determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay, was not detected in the plain film but increased with increasing extract concentration. The film with 3% CNTE exhibited the highest antioxidant activity of 58.93 µmol Trolox equivalents (TE) g−1 film. This study highlights the potential of CNTE as an effective edible additive for developing antioxidant and ultraviolet barrier films with improved mechanical strength and water resistance for food packaging applications. |
| format | Article |
| id | doaj-art-a35a0d9a978b462a908b1d3daf596384 |
| institution | Kabale University |
| issn | 2054-5703 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj-art-a35a0d9a978b462a908b1d3daf5963842024-12-05T09:59:21ZengThe Royal SocietyRoyal Society Open Science2054-57032024-12-01111210.1098/rsos.241236Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packagingThuy Tien Dang0Lam Anh Thy Nguyen1Duc Tien Dau2Quy Sinh Nguyen3Thao Nhien Le4Thi Quynh Ngoc Nguyen5Department of Food Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 72506, VietnamDepartment of Food Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 72506, VietnamDepartment of Food Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 72506, VietnamDepartment of Food Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 72506, VietnamDepartment of Food Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 72506, VietnamDepartment of Food Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 72506, VietnamCashew nut testa, a by-product of cashew nut processing, is abundant in phenolic compounds and exhibits strong antioxidant properties, making it a potential additive for enhancing the antioxidant properties of biodegradable films used in food packaging. This study explores the fabrication of biodegradable chitosan/polyvinyl alcohol films incorporating varying concentrations of cashew nut testa extract (CNTE; 0, 1, 2 and 3% v/v) and evaluates their physical, structural, mechanical, optical and antioxidant properties. The results demonstrate that increasing extract concentration generally increased the thickness, tensile strength, Young's modulus, thermal stability and antioxidant capacity of the films, while reducing the moisture content, swelling degree, elongation at break, and light transmittance. Specifically, the film with 3% extract showed approximately 11% lower moisture content and 31% lower swelling degree compared with the plain film. It also displayed the highest tensile strength and Young's modulus at 28.63 and 147.35 MPa, respectively. Microstructural analysis revealed that the incorporation of CNTE resulted in a smoother and slightly denser film structure. Antioxidant activity, determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay, was not detected in the plain film but increased with increasing extract concentration. The film with 3% CNTE exhibited the highest antioxidant activity of 58.93 µmol Trolox equivalents (TE) g−1 film. This study highlights the potential of CNTE as an effective edible additive for developing antioxidant and ultraviolet barrier films with improved mechanical strength and water resistance for food packaging applications.https://royalsocietypublishing.org/doi/10.1098/rsos.241236chitosanpolyvinyl alcoholextractcashew nut testabiodegradableantioxidant |
| spellingShingle | Thuy Tien Dang Lam Anh Thy Nguyen Duc Tien Dau Quy Sinh Nguyen Thao Nhien Le Thi Quynh Ngoc Nguyen Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging Royal Society Open Science chitosan polyvinyl alcohol extract cashew nut testa biodegradable antioxidant |
| title | Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging |
| title_full | Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging |
| title_fullStr | Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging |
| title_full_unstemmed | Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging |
| title_short | Improving properties of chitosan/polyvinyl alcohol films using cashew nut testa extract: potential applications in food packaging |
| title_sort | improving properties of chitosan polyvinyl alcohol films using cashew nut testa extract potential applications in food packaging |
| topic | chitosan polyvinyl alcohol extract cashew nut testa biodegradable antioxidant |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.241236 |
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