单宁酸
细胞毒性
抗菌活性
核化学
化学
背景(考古学)
氢键
吸附
半胱氨酸
氧化还原
高分子化学
有机化学
细菌
体外
生物化学
酶
分子
古生物学
生物
遗传学
作者
Yang Wu,Sheng Yang,Feiya Fu,Jingjing Zhang,Jianhua Li,Tingfang Ma,Xiangdong Liu,Juming Yao
标识
DOI:10.1016/j.apsusc.2021.151821
摘要
In this paper, L-cysteine (Cys) is firstly bonded to the surface of cotton non-woven (CO) fabric as esterification. In this way, Ag+ and tannic acid (TA) are adsorbed onto the modified fabric via complexation and hydrogen bond interaction. After a sustainable one-step redox reaction, a Cys modified CO fabric decorated with Ag NPs and TA (CO-Cys-Ag-TA) is prepared. Because of the stabilizing effect of Cys and TA, the synthesized Ag NPs with a mean size of 88.9 nm are uniformly distributed on the modified fabric surface. Through the comparative test, it has been revealed that the antibacterial activity of Ag NPs is improved after loading TA, and the loading of Ag NPs significantly reduces the cytotoxicity of TA. In this context, the bacteriostatic reduction rate of CO-Cys-Ag-TA against S. aureus and E. coli is close to 100%, and its antibacterial activities are greater than 98.5% after 50 washing cycles. Meanwhile, its cell viability value reaches up to 88.0% with the presence of 0.1 mg/mL to 0.8 mg/mL CO-Cys-Ag-TA.
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