Conventional Blending Chitosan Lignin Nanocomposites Hydrogel (CsLNPs) for food coating application

Ahmad Tarmizi, Amelia Shanaz and Othman, Muhammad Bisyrul Hafi and Abdullah Sani, Muhamad Shirwan and Rafiae, Nur Najmina and Rostan, Nur Raihan and Mohamad Ibrahim, Mohamad Nasir (2025) Conventional Blending Chitosan Lignin Nanocomposites Hydrogel (CsLNPs) for food coating application. Halalsphere, 5 (1). pp. 15-23. E-ISSN 2773-6040

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Abstract

Despite the importance of bio-based materials for food coatings, studies on how LNPs enhance thermal stability, swelling behaviour, and barrier properties remain limited, creating a gap in sustainable food preservation solutions. This work successfully prepared the lignin chitosan nanocomposites hydrogel (CsLNPs) via a conventional, cost-effective blending method. The incorporation of LNPs into Cs hydrogels was confirmed via FTIR, showing interactions between LNPs’ -OH groups and Cs’ -NH2 groups, with peak shifts at 3400–3200 cm⁻¹. Thermal analysis revealed decomposition temperatures (Tmax) of 285–290°C, with T10% >170°C and >24% residue at 800°C. Glass transition temperatures (Tg) ranged from 143–154°C. LNPs initially improved thermal stability, although higher loading caused agglomeration, reducing performance. LNPs-Cs hydrogels displayed insolubility in non-polar solvents due to their inherent structure, while increasing lignin loading (5–20%) enhanced water absorption and swelling, slowing fruit rotting. This demonstrated improved moisture and oxygen barrier properties. The findings highlight CsLNPs as a sustainable, effective food coating, reducing waste, promoting eco-friendly packaging, and advancing bio-based solutions for food technology.

Item Type:	Article (Journal)
Additional Information:	7834/119821
Uncontrolled Keywords:	Chitosan (Cs) hydrogel, Lignin nanoparticles (LNPs), Thermal stability, Food coating, Food security
Subjects:	T Technology > TP Chemical technology > TP248.13 Biotechnology T Technology > TP Chemical technology > TP372.6 Halal food industry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART)
Depositing User:	Muhamad Shirwan Abdullah Sani
Date Deposited:	20 Feb 2025 10:21
Last Modified:	20 Feb 2025 10:21
URI:	http://irep.iium.edu.my/id/eprint/119821

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