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Carboxymethyl chitosan-based electrospun nanofibers with high citral-loading for potential anti-infection wound dressings

文献类型： 外文期刊

作者： Li, Chengpeng 1 ; Luo, Xiaoyan 1 ; Li, Lefan 1 ; Cai, Ying 1 ; Kang, Xinhuang 1 ; Li, Puwang 3 ;

作者机构： 1.Guangdong Ocean Univ, Sch Chem & Environm Sci, Zhanjiang 524088, Peoples R China

2.Zhanjiang Key Lab Marine Biomat Res, Zhanjiang 524088, Peoples R China

3.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Zhanjiang 524001, Peoples R China

关键词： Carboxymethyl chitosan; Pickering emulsion; Electrospinning

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.025； 五年影响因子：7.626 ）

ISSN： 0141-8130

年卷期： 2022 年 209 卷

页码：

收录情况： SCI

摘要： As a natural antibacterial agent with pleasant fragrance, citral possesses low aqueous solubility. To improve citral loading in hydrophilic nanofiber, Pickering emulsion electrospinning strategy was proposed for anti-infection dressing development. The in-situ aggerated beta-cyclodextrin-citral inclusion complex particles (beta CPs) were used as emulsion stabilizers, while citral and carboxymethyl chitosan (CMCS)/polyvinyl alcohol (PVA) mixed solutions were used as the inner "dispersed oil phase " and outer "continuous water phase ", respectively. The results of electronic microscope investigation shown beta CPs possessed regular cube appearances with a size of 5.5 +/- 2.2 mu m, which might improve the emulsion storage stability based on visual investigation. Moreover, randomly oriented and bead-on-string nanofibers with beta CPs uniformly distributed could be obtained under optimized compositions and electrospinning parameters. Despite volatilization during electrospinning, nanofibers with high citral loading possessed good antibacterial performance against Staphylococcus aureus and Escherichia coli. In vitro hemolysis test indicated that nanofibers were hemocompatible. In addition, both fiber matrix and citral could promote the proliferation of mouse fibroblast cells. And the permeability of the fibers was adjustable. Thus, CMCS/PVA/beta CPs/citral nanofibers could potentially protect wound from infection. In summary, CMCS/PVA/beta CPs/citral nanofibers seemed to be promising alternatives to conventional wound dressings.

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