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Journal article
Fermentation and Immobilization of Insect-Derived Deltamethrin-Degrading Strain, Microbacterium sp
Insects (Basel, Switzerland), Vol.17(1), 3
2025
PMID: 41598857
Abstract
Extensive application of deltamethrin on agricultural products results in serious contamination of the environment. Its negative impact on environmental and public health necessitates the development of environmental remediation technologies. Detailed investigations of microbial degradation of deltamethrin may be useful for the development of bioremediation strategies. In this study, the deltamethrin removal capability of a bacterial strain,
sp., previously isolated from the gut of
(Herbst) (Coleoptera: Tenebrionidae) was first investigated. When 3 mL of the bacterial solution (OD
= 1) was inoculated into 97 mL of MS media containing 200 μg/mL deltamethrin, it could remove 45.7% deltamethrin after 64 h of incubation. This strain grew fastest in LB media with an inoculum volume of 3% in pH 7 at 175 rpm, 25 °C. To enhance its environmental tolerance, this strain was immobilized with sodium alginate.
sp.-containing calcium alginate microspheres (CAMs) exhibited an enhanced deltamethrin removal capability compared to free bacteria, and CAMs generated by immobilization with 2% sodium alginate and 3% CaCl
cross-linking for 4 h possessed the maximum deltamethrin removal capability. The ultrastructure of
sp.-containing CAMs prepared under optimal conditions was a three-dimensional mesh structure with pores and dense features, and the bacteria grew well in the immobilized carrier. After being reused five times, the deltamethrin removal rate of immobilized
sp. still reached over 50%. When
sp. was inoculated into deltamethrin-contaminated water or soil for 48 h, the deltamethrin removal rate of immobilized bacteria was 1.4 times higher than that of free bacteria. These results suggest that
sp.-containing CAMs possess an excellent deltamethrin removal capability and good reusability, showing great potential for the remediation of deltamethrin-contaminated environments.
Details
- Title
- Fermentation and Immobilization of Insect-Derived Deltamethrin-Degrading Strain, Microbacterium sp
- Authors/Creators
- Zhengyan Wang - Henan University of TechnologyQiong Luo - Henan University of TechnologyYifan Liu - Henan University of TechnologyTianwei Ye - Henan University of TechnologyYujia Zhang - Murdoch UniversityWei Xu - Murdoch University, Centre for Sustainable Farming Systems
- Publication Details
- Insects (Basel, Switzerland), Vol.17(1), 3
- Publisher
- MDPI
- Number of pages
- 16
- Grant note
- No. 32272531 / National Natural Science Foundation of China
- Identifiers
- 991005859693507891
- Copyright
- © 2025 by the authors.
- Murdoch Affiliation
- School of Agricultural Sciences; College of Environmental and Life Sciences; Centre for Sustainable Farming Systems
- Language
- English
- Resource Type
- Journal article
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