Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (16): 2528-2534.doi: 10.3969/j.issn.2095-4344.3147

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Preparation and performance evaluation of carboxymethyl chitosan/oxidized glucomannan/Panax notoginseng compound sponge dressing for chronic wound

Li Jie1, Xu Jianzhen1, Hu Ping1, Lei Qiqi1, Zhang Wenning1, Ao Ningjian1, 2    

  1. 1College of Life Science and Technology, Jinan University, Guangzhou 510632, Guangdong Province, China; 2Key Laboratory of Biomaterials of Guangdong Education Department, Guangzhou 510632, Guangdong Province, China 
  • Received:2020-04-25 Revised:2020-04-27 Accepted:2020-05-22 Online:2021-06-08 Published:2021-01-07
  • Contact: Ao Ningjian, Researcher, Master’s and doctoral supervisor, College of Life Science and Technology, Jinan University, Guangzhou 510632, Guangdong Province, China; Key Laboratory of Biomaterials of Guangdong Education Department, Guangzhou 510632, Guangdong Province, China
  • About author:李洁,女,1997年生,云南省西双版纳傣族自治州勐海县人,暨南大学在读硕士,主要从事生物医用材料研发与创伤修复研究。 许楗桢,男,1993年生,广西壮族自治区南宁市人,汉族,暨南大学毕业,硕士,工程师,主要从事新型医用高分子材料与医疗器械产品研发工作。
  • Supported by:
    a grant from Science and Technology Plan of Guangdong Provincial Department of Science and Technology, No. 2017A020211006 (to ANJ); the National Natural Science Foundation of China, No. 20976068 (to ANJ)

Abstract: BACKGROUND: Previous studies have shown that carboxymethyl chitosan/oxidized glucomannan composite sponge can be used as an excellent substrate for drug-loaded chronic wound dressings.
OBJECTIVE: To prepare carboxymethyl chitosan/oxidized glucomannan/Panax notoginseng composite sponge and evaluate its physical and chemical properties and biocompatibility.
METHODS: Oxidized glucomannan was prepared by sodium periodate oxidation. Panax notoginseng saponins were extracted from Panax notoginseng powder. Carboxymethyl chitosan and oxidized glucomannan were first added as mixed raw materials, and then added separately to account for mixing system 2%, 6%, 10% of Panax notoginseng saponins. Freeze-drying method was used to prepare carboxymethyl chitosan/oxidized glucomannan/Panax notoginseng composite sponge. Scanning electron microscope was utilized to observe the microstructure of the composite sponge. Porosity, steam permeability, total saponin release rate of Panax notoginseng, cell compatibility, antibacterial properties and acute systemic toxicity were detected.
RESULTS AND CONCLUSION: (1) Scanning electron microscope showed that there were many pores in the composite sponge that were full and evenly distributed. The total saponins of Panax notoginseng were stably and evenly attached to the inner walls and joints of the pores of the sponge. (2) As the proportion of total saponins of Panax notoginseng increased, the water absorption rate, porosity, and steam permeability gradually increased. (3) The vast majority of the total saponins of Panax notoginseng in the three kinds of composite sponges could be efficiently released in 13 hours in vitro. (4) Within 3 days after in vitro culture, the proliferation rate of fibroblasts was more than 95%. (5) Three kinds of compound sponges have an inhibitory effect on E. coli and Staphylococcus aureus, but do not have acute systemic toxicity. (6) The results show that carboxymethyl chitosan/oxidized glucomannan/Panax notoginseng composite sponge is expected to be an excellent medical chronic wound dressing.

Key words: material, Panax notoginseng, carboxymethyl chitosan, oxidized glucomannan, composite sponge, chronic wound, biosafety

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