Green synthesis of citric acid-crosslinked ethanol lignin/carboxymethylcellulose films for fresh-cut apple preservation
Year: 2025
Type: article
Abstract: Considering the non-renewable and non-biodegradable characteristics of conventional petroleum-based plastic films, their widespread use contributes significantly to environmental degradation. This study utilizes a green synthesis citrate-based chemical cross-linking strategy to improve the dispersion of ethanol lignin within the film, thereby promoting the development of a natural, safe, renewable, biodegradable, and environmentally friendly biomass-based functional food packaging material. A novel, multifunctional green food preservation film (ELA x C) was synthesized by employing CMC film as the substrate, ethanol lignin (EL) as the functional agent, and citric acid (CA) as the cross-linking agent. The influence of CA addition on the properties of the film was systematically examined. The results indicated that the ELA 0.2 C film exhibited an optimal elongation at a break of 8.0 %, a tensile strength of 28.49 MPa, and outstanding UV-blocking performance, effectively blocking 100 % of UVB and 99.2 % of UVA radiation. Furthermore, the ELA 0.2 C film exhibits antioxidant properties, gas barrier performance, and biodegradability. This film demonstrates significant potential as a multifunctional cling film for apple slices. Moreover, EL can be directly applied as a functional agent without the need for re-dissolution, thereby offering an innovative pathway for the efficient and environmentally sustainable utilization of lignin.
Source: Industrial Crops and Products
Authors: Xu Dong, Liping Chen, Danjie Xu, Jian Zhang, Fang Hu, Qingwei Ping
Institutions: Qiqihar University, Dalian Polytechnic University
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,720
Award: 自催化乙醇法制浆低沸点有机酸产生机理及其作用机制研究
OpenAlex ID: W4416378278