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三氯生 1

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绿色化学 1

聚丙烯支架 1

聚多巴胺 1

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Transformation of triclosan by a novel cold-adapted laccase from

Yuanyuan Shi, Deyang Kong, Jiayang Liu, Junhe Lu, Xiaoming Yin, Quansuo Zhou

《环境科学与工程前沿（英文）》 2017年第11卷第3期 doi: 10.1007/s11783-017-0927-5

摘要： This work investigated the transformation of triclosan (TCS) by laccase produced by a pathogen isolated from rotten tomato. The pathogen was characterized as sp. FQ, belonging to subphylum . The laccase exhibited cold-adaptation with relatively high activity at 20°C. The laccase could effectively transform TCS. Approximately 62% TCS could be removed at dose of 1.0 unit·mL in 120 min. The reaction rate appeared to be to the concentration of the substrate, suggesting the laccase activity remained stable during the reaction. Transformation products of TCS were analyzed by mass spectrometry and it was revealed that TCS dimers were formed via radical coupling pathways. During this process, laccase catalyzed oxidation of TCS to form a radical intermediate is the rate limiting step. However, this step can be reversed by humic acid. Overall, the laccase showed great potential in the treatment of phenolic contaminants. Since laccase is widely presented in natural environment, this study also revealed an important pathway involved in the transformation of phenolic contaminants in the environment.

关键词： Laccase Botrytis cinerea Triclosan Transformation Kinetics

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Biodegradation of triclosan and triclocarban in sewage sludge during composting under three ventilation

Bao Yu, Guodi Zheng, Xuedong Wang, Min Wang, Tongbin Chen

《环境科学与工程前沿（英文）》 2019年第13卷第3期 doi: 10.1007/s11783-019-1125-4

摘要：

TCS and TCC can be biodegraded during sewage sludge composting.

Ventilation significantly accelerated the biodegradation of TCS and TCC in sludge.

Composting can reduce the environmental risk of TCS and TCC in sewage sludge.

关键词： Sewage sludge Compost Triclosan Triclocarban Ventilation Risk assessment

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一步法绿色制备具有持续抗菌性能的医用支架 Article

黄榕康, 胡民辉, 梁伟文, 郑娟娟, 杜杨, 林燕欢, 王怀明, 过文泰, 曾展涛, 李创坤, 利民, 王辉, 张兴才

《工程（英文）》 2021年第7卷第3期页码 326-333 doi: 10.1016/j.eng.2020.08.022

摘要：

聚丙烯（polypropylene, PP）支架是目前最常用的生物医用支架，在外科手术使用中存在黏连、感染、异物反应等缺点。本文报道了一种简易一步法，用于制备新型三氯生聚多巴胺聚丙烯（TPP）复合支架，从而有效地提高了PP支架的生物相容性和持续抗菌性。通过一步法绿色制造，具有广谱抗菌效果的三氯生在聚多巴胺形成过程中，在PP支架表面可以有效地与多巴胺发生相互作用。三氯生可从具有生物相容性的聚多巴胺表面涂层持续释放。利用三氯生（浓度为8 mg∙mL⁻¹，即TPP-8）制备的5 mm × 5 mm的支架具备持续抗菌性，对最大菌液量为2 mL的大肠杆菌（E. coli）和5 mL的金黄色葡萄球菌（S. aureus）的持续抗菌时间超过15 d。本研究为长效抗菌医用生物材料的绿色制备提供了一个新的方向。

关键词：绿色化学聚丙烯支架聚多巴胺三氯生抗菌