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细菌多糖稳定银纳米颗粒可用光催化方式去色亚染料

Shrabana Sarkar^1,2, Aparna Banerjee³, Rajib Bandopadhyay⁴

¹UGC-Center of Advanced Study, Department of Botany, The University of Burdwan, Golapbag, Bardhaman, West Bengal, 713104, India.

Applied biochemistry and biotechnology

|July 21, 2023

概括

这项研究从Chryseobacterium geocarposphaerae DD3中分离出细菌细胞壁多糖体 (CPs),揭示了它们的高热稳定性和作为工业添加剂的潜力. 该CP还有效地稳定了银纳米颗粒用于色剂生物修复.

科学领域:

生物技术和材料科学生物技术和材料科学
微生物多糖体的特征表征
纳米粒子合成和应用

背景情况:

细菌多糖体在稳定性,无毒性和生物降解性方面比其他多糖体来源具有优势.
细菌细胞壁多糖 (CPs) 的探索比外聚糖要少,这为新型应用提供了机会.
织工业染料污水是耐热细菌的来源,有可能生产有价值的生物材料.

研究的目的:

从耐热细菌Chryseobacterium geocarposphaerae DD3中分离和结构性地表征细胞壁多糖 (CPs).
评估分离的CPs (CPs3) 作为添加剂的工业适用性,重点关注抗菌,乳化和花的特性.
用CPS3作为稳定剂合成和表征银纳米粒子 (AgNPs),并评估它们对染料降解的光催化活性.

主要方法:

从Cryseobacterium geocarposphaerae DD3.3中分离了CP.
使用SEM-EDX,AFM,FTIR,NMR和TGA进行结构和热特性.
使用CPS3进行AgNP的绿色合成,然后进行表征 (UV-Vis,TEM,AFM,粒子大小分析) 和对色剂进行光催化活性测试.

主要成果:

CPs3呈现出一个紧的,无孔的无形结构,具有高热稳定性 (高达~350°C).
FTIR和NMR证实了多糖性质,具有特定的葡萄糖链接 (β-(1→3) 和β-(1→4).
CPs3 显示出抗菌,乳化和花化能力. 在3小时内,CPs3稳定的AgNP显示了刚果红色 (88.33%),甲基红色 (76.81%) 和马六合绿色 (47.34%) 的显著光催化降解.

结论:

这项研究首次报告了来自Chryseobacterium geocarposphaerae的CP的分离和表征.
CPs3表现出多功能性,在生物技术行业中作为一种有价值的添加剂,并作为AgNPs的稳定剂.
CPs3稳定的AgNP显示出对色素染料的生物修复有前途,突出了废水处理的可持续方法.

关键词:

克里西奥细菌 (Chryseobacterium) 是一种细菌.亚索染料是一种染料.细胞壁中的多糖化合物.光催化作用的光催化银纳米颗粒是什么意思银纳米粒子是什么意思

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