私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:> 首頁 > 論文著作 > 正文
Silver nanoparticles in situ synthesized by polysaccharides from Sanghuangporus sanghuang and composites with chitosan to prepare scaffolds for the regeneration of infected full-thickness skin defects
作者:Ran, Luoxiao; Zou, Yini; Cheng, Junwen; Lu, Fei
關鍵字:Silver nanoparticles
論文來源:期刊
具體來源:International Journal of Biological Macromolecules
發表時間:2019年
In recent years, silver nanoparticles have widely been used in antibacterial dressings to solve antibiotic resistance problems. However, traditional methods for reducing silver nanoparticles are usually toxic. To overcome this problem, Sanghuangporus sanghuang polysaccharides (FSHPs) were used as a green reducing agent to prepare silver nanoparticles (AgNPs) with a size of 3-35 nm. The FSHPs-silver nanoparticles (FSHPs-Ag) composite with chitosan solution were then freeze-dried to obtain a porous sponge dressing of chitosan-FSHPs-Ag (CS-FSHPs-Ag). The internal pores of CS-FSHPs-Ag were between 50 and 100 mu m and had good swelling and water retention properties, which could provide a moist environment for wounds. Based on the experimental results, the appropriate concentration of AgNPs required for CS-FSHPs-Ag to inhibit Escherichia coli and Staphylococcus aureus was determined. Moreover, there was no statistically significant difference between the material treatment and the blank control group, indicating that the material almost showed no toxicity to L929 cells. Finally, this material was used for dressing animal wounds. The results showed that the CS-FSHPs-Ag promoted wound contraction and internal tissue growth better than the wounds treated with Aquacel (R) Ag, which indicated that the CS-FSHPs-Ag has a great potential as an ideal wound dressing material. (C) 2018 Elsevier B.V. All rights reserved.
主站蜘蛛池模板: 昭通市| 贵溪市| 寿光市| 应用必备| 关岭| 龙陵县| 靖西县| 乌兰县| 东辽县| 淳安县| 德安县| 大冶市| 资兴市| 康乐县| 志丹县| 独山县| 永仁县| 双桥区| 大足县| 衡阳市| 宁乡县| 沂源县| 舟山市| 阿拉善盟| 古交市| 中超| 城市| 武冈市| 金平| 银川市| 富阳市| 祁连县| 盐边县| 漳州市| 平乡县| 岗巴县| 许昌县| 晋中市| 白朗县| 天津市| 佳木斯市|