Preparation and characterization of functionalized chitosan/polyvinyl alcohol composite films incorporated with cinnamon essential oil as an active packaging material

被引：42
作者：
Pan, Qingyan [1 ,2 ]
Zhou, Chuang [1 ]
Yang, Ziming [1 ]
Wang, Chao [1 ]
He, Zuyu [1 ]
Liu, Yunhao [1 ]
Song, Shuhui [1 ]
Chen, Yu [3 ]
Xie, Mubiao [4 ]
Li, Puwang [1 ]
机构：
[1] Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Key Lab Hainan Prov Postharvest Physiol & Technol, Zhanjiang 524091, Peoples R China
[2] Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China
[3] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[4] Lingnan Normal Univ, Sch Chem & Chem Engn, Zhanjiang 524048, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 235卷
关键词：
Amphiphilic chitosan; Composite films; Packaging material; ANTIBACTERIAL ACTIVITY; PHOSPHONIUM CHITOSAN; DERIVATIVES;
D O I：
10.1016/j.ijbiomac.2023.123914
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In this study, amphiphilic chitosan (NPCS-CA) was synthesized by grafting quaternary phosphonium salt and cholic acid onto the chain of chitosan, aiming to develop an active edible film based on NPCS-CA and polyvinyl alcohol (PVA) incorporated with cinnamon essential oil (CEO) by the casting method. The chemical structure of the chitosan derivative was characterized by FT-IR, 1H NMR and XRD. Through the characterization of FT-IR, TGA, mechanical and barrier properties of the composite films, the optimal proportion of NPCS-CA/PVA was determined as 5/5. And, the tensile strength and elongation at break of the NPCS-CA/PVA (5/5) film with 0.4 % CEO were 20.32 MPa and 65.73 %, respectively. The results revealed that the NPCS-CA/PVA-CEO composite films exhibited an excellent ultraviolet barrier property at 200-300 nm and significantly reduced oxygen permeability, carbon dioxide permeability and water vapor permeability. Furthermore, the antibacterial prop-erty of film-forming solutions against E. coli, S. aureus, and C. lagenarium was distinctly improved with the in-crease of NPCS-CA/PVA proportion. And, the multifunctional films effectively extended the shelf-life of mangoes at 25 degrees C based on the characterization of surface changes and quality indexes. The NPCS-CA/PVA-CEO films could be developed as biocomposite food packaging material.
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页数：12
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