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Qiao Z, Guo P, Yang D, Pei Z, Wang M, Liu J, Wang Q. Evaluation of acute toxicity response to the algae Chlorella pyrenoidosa of biosynthetic silver nanoparticles catalysts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:10955-10968. [PMID: 36087185 DOI: 10.1007/s11356-022-22879-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
Biosynthetic of silver nanoparticles (AgNPs) by using fungi has attracted much attention due to its high catalytic efficiency and environmentally friendly characteristic. However, a few studies have focused on the ecological toxicity effects of biogenic AgNPs on algae. Here, we first investigated the catalytic reduction of 4-nitrophenol (4-NP) by WZ07-AgNPs biosynthesized by Letendraea sp. WZ07. WZ07-AgNPs had significant catalytic activity with 97.08% degradation of 4-NP in 3.5 min. Then, the toxic effects of WZ07-AgNPs and commercial-AgNPs were compared by Chlorella pyrenoidosa growth, chlorophyll content, protein content, physiological, and biochemical indexes. The results demonstrated that the algal cell biomass of C. pyrenoidosa was differentially inhibited after exposure to different concentrations of AgNPs, which showed concentration dependence and time dependence. The 96h-EC50 values of WZ07-AgNPs and commercial-AgNPs on C. pyrenoidosa were 15.99 mg/mL and 12.69 mg/mL, respectively. With the increase concentration of AgNPs, the chlorophyll content was gradually decreased, the protein content was first increased and then decreased, the activities of superoxide dismutase (SOD) and catalase (CAT) were decreased, and the level of malondialdehyde (MDA) was increased significantly of C. pyrenoidosa. In general, AgNPs affect the growth of algae to some extent. However, compared with commercial-AgNPs, WZ07-AgNPs is less toxic to C. pyrenoidosa, which could be used as a potential and an eco-friendly catalyst. This study provides a basis for the safe application of biosynthetic AgNPs.
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Affiliation(s)
- Zipeng Qiao
- Department of Bioengineering and Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
| | - Peiyong Guo
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
- Institute of Environmental and Resources Technology, Huaqiao University, Xiamen, 361021, People's Republic of China
| | - Daomao Yang
- Department of Bioengineering and Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
| | - Zhenqiao Pei
- Department of Bioengineering and Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
| | - Mingyuan Wang
- Department of Bioengineering and Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
| | - Jianfu Liu
- Department of Bioengineering and Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
| | - Qizhi Wang
- Department of Bioengineering and Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China.
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