Work

Response mechanism of extracellular polymers in the remediation of chromium pollution by carbonate mineralizing bacteria

Year: 2025

Type: article

Abstract: , while the removal amount continued to rise, indicating strong Cr(iii) tolerance in the bacterium. Analysis of dynamic changes in EPS revealed a significant increase in production, with polysaccharides and proteins playing key roles in Cr(iii) binding. A notable increase in mannose in the monosaccharide composition of EPS suggests its involvement in Cr(iii) binding. Moreover, alterations in the protein secondary structure, such as a reduction in α-helix content and an increase in β-sheet and random coil structures, may enhance EPS interaction with Cr(iii). These findings demonstrate that EPS contributes to heavy metal remediation not only through its polysaccharide components but also through changes in protein structure, offering a new theoretical foundation for Cr(iii) bioremediation.

Source: RSC Advances

DOI: 10.1039/d5ra01916h

Authors: Yingying Shen, Huan Cao, Miaomiao Du, Xinfeng Wang, Jia Qin

Institutions: Lanzhou University of Technology, Zhejiang Industry & Trade Vocational College

Language: English

Topic: Chromium effects and bioremediation

Subfield: Health, Toxicology and Mutagenesis

Field: Environmental Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funder: Science and Technology Plan Project of Wenzhou, China