Fabrication of flexible chitosan film reinforced with pulping by-product lignosulfonates for cherry-tomato preservation
The massive production of food waste and plastic pollution necessitates innovative solutions. This study reports the first fabrication of a flexible chitosan (CH) film reinforced with lignosulfonate (LS) derived from pulping byproduct as a sustainable alternative to synthetic food packaging. The CH/...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Published: |
Elsevier BV
2024
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| Online Access: | http://psasir.upm.edu.my/id/eprint/106167/ https://linkinghub.elsevier.com/retrieve/pii/S2590157524000683 |
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| Institution: | Universiti Putra Malaysia |
| Summary: | The massive production of food waste and plastic pollution necessitates innovative solutions. This study reports the first fabrication of a flexible chitosan (CH) film reinforced with lignosulfonate (LS) derived from pulping byproduct as a sustainable alternative to synthetic food packaging. The CH/LS composite film was prepared by a simple casting method with varying LS contents of 1 % and 2 %. Compared to CH film, the addition of 2 % LS increased the tensile strength by over 4 times and decreased water vapor permeability by 11 %. Moreover, the CH/LS film exhibited excellent UV-shielding properties. This novel use of LS to reinforce CH film presents an eco-friendly active packaging material. When used to package cherry tomatoes for 2 weeks, the CH/LS film effectively maintained fruit freshness and hardness while minimizing weight loss. This work provides new scientific evidence on the optimized preparation and application of CH/LS composite films from renewable resources for food preservation. |
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