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Chitosan membrane drafting silver-immobilized graphene oxide nanocomposite for banana preservation: Fabrication, physicochemical properties, bioactivities, and application

2023; Elsevier BV; Volume: 242; Linguagem: Inglês

10.1016/j.ijbiomac.2023.124607

1879-0003

Nguyen Minh Dat, Nguyen Thanh Hoai Nam, Che Quang Cong, Le Minh Huong, Nguyễn Duy Hải, Le Tan Tai, Hoang An, Bui Thanh Duy, Nguyen Tien Dat, Vo Nguyen Dai Viet, Hoang Thai Duong, Mai Thanh Phong, Nguyễn Hữu Hiếu,

Electrospun Nanofibers in Biomedical Applications

In this study, silver-immobilized graphene oxide/chitosan (AGC/CTS) membranes were assembled by the solvent evaporation method, wherein Curcuma longa extract was used to synthesize silver-immobilized graphene oxide (AGC) nanocomposite. The characterization results showed that the AGC was successfully synthesized with AgNPs distributed quite evenly on GO sheets. The as-prepared AGC also exhibited high antibacterial activity and low cytotoxicity towards normal cell lines compared to human epithelial carcinoma cell lines. Besides, the fabrication of AGC/CTS membranes was additionally assessed with different AGC ratios and thicknesses. The results revealed the membrane containing 3 wt% of AGC with great hygroscopicity and elastic modulus of 27.03 ± 3.07 MPa. The samples also performed excellent bactericidal capability, along with good mechanical properties for banana preservation. Therewithal, the membrane-coated bananas were also elucidated to ripen at slower paces and less damage, with no appearance of patches of mold on the banana peel surface, eventually prolonging the shelf life of bananas up to 10 days as compared to the non-coated ones. The aforesaid results confirm the potential application of the AGC/CTS membrane as a safe and alternative fruit preservation agent in the food industry.