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Liu Y, Yang Y, Fan Y, Zhao Q, Gao G, Zhi J. Feasibility investigation and development of microbial electrochemical biosensors for marine pollution monitoring. Talanta 2023; 255:124204. [PMID: 36580811 DOI: 10.1016/j.talanta.2022.124204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Electrochemical biosensor, as a real-time and rapid detection method, has rarely been explored in marine monitoring. In present work, microbial electrochemical biosensors based on two design strategies: disperse system and integrated microbial electrode, were systematically discussed and their feasibility in marine biotoxicity assessment were investigated. An isolation method was initially investigated to eliminate the potential interference and detect the biological response accurately. The influence of water salinity on the current response was eliminated by adopting the salt-tolerant bacteria Staphylococcus aureus as test microorganism and buffer solution with sufficient ionic strength. The biotoxicity of heavy metal ions and pesticides were sensitively determined. Furthermore, a novel integrated microbial biosensor was designed by immobilizing S. aureus with a redox-active gel that consists of chitosan and poly (diallyl dimethyl ammonium chloride) mixture and confined potassium ferricyanide via electrostatic interaction. The IC50 values for Cu2+, Zn2+, Cr2O72- and Ni2+ were 3.01 mg/L, 1.34 mg/L, 7.64 mg/L and 9.41 mg/L, respectively. This work not only verified the feasibility of electrochemical biosensor in marine pollution monitoring, but also compared the pros and cons of two biosensor design strategies, which provide a guidance for the future development and application of marine monitoring devices based on electrochemical method.
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Affiliation(s)
- Yanran Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yajie Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yining Fan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Qi Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Guanyue Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
| | - Jinfang Zhi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
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Chen Y, Zhang M, Zhao T, Lai J, Wang Y, Zhou Q, Li J, Hu K, Li Q, Ao X, Chen S, Yang Y, Zou L, Liu S. Optimization and adsorption characteristics of beads based on heat-inactivated bacterial biomaterial towards the pesticide Cypermethrin. J Appl Microbiol 2022; 134:lxac026. [PMID: 36626792 DOI: 10.1093/jambio/lxac026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/30/2022] [Accepted: 10/24/2022] [Indexed: 01/12/2023]
Abstract
AIMS Beads containing heat-inactivated bacterial biomaterial (BBBs) were prepared for removal of cypermethrin (CPM) and the conditions for this removal were evaluated and optimized via single-factor coupled orthogonal experiments based on five factors. The adsorption characteristics of BBBs and the binding mechanism were then explored. METHODS AND RESULTS Results showed that the adsorption rate of CPM could reach 98% with beads prepared under optimized conditions: equal volumes of Lactobacillus cell debris derived from 1×1011 CFU; 2% hydroxypropyl-β-cyclodextrin and 2.5% activated carbon concentration, were mixed to give mixture TM, and this and SA, was mixed 1:4 with sodium alginate (SA) and beads were prepared using a 26-Gauge needle). The best adsorption conditions were initial CPM concentration of 10 mg l-1, incubation time of 24 h, and rotational speed of 180 rpm. BBBs have a well-formed structure and abundant surface functional groups, such as -COOH, -OH, -NH, -CH, -CO, -C=C. The adsorption process conformed to pseudo-second-order kinetic, and it was also a Freundlich monolayer adsorption, and the calculated maximum adsorption capacity was 9.69 mg g-1 under optimized conditions. CONCLUSIONS BBBs showed the highest CPM removal capacity and a good tolerance ability. SIGNIFICANCE AND IMPACT OF THE STUDY Our results provided a theoretical foundation for developing an adsorbent with heat-inactivated Lactobacillus plantarum (L. plantarum) RS60 for removing CPM in wastewater or drinks.
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Affiliation(s)
- Yuan Chen
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Mengmei Zhang
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Tianye Zhao
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Jinghui Lai
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Yuanqing Wang
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Qiao Zhou
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Qin Li
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Xiaolin Ao
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Shujuan Chen
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Yong Yang
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
| | - Likou Zou
- College of Resources, Sichuan Agricultural University, Chengdu, Sichuan 611130, People's Republic of China
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, People's Republic of China
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Li J, Hu K, Hu L, Hou X, Li Q, Liu A, Chen S, Ao X, Hu X, He L, Tang H, Huang D, Yang Y, Zou L, Liu S. Adsorption Behavior of 3-phenoxybenzoic Acid by Lactobacillus Plantarum and Its Potential Application in Simulated Digestive Juices. Int J Mol Sci 2022; 23:ijms23105809. [PMID: 35628620 PMCID: PMC9146835 DOI: 10.3390/ijms23105809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/13/2022] [Accepted: 05/19/2022] [Indexed: 12/03/2022] Open
Abstract
3-PBA is a major degradation intermediate of pyrethroids. Its widespread existence in the environment poses a severe threat to the ecosystem and human health. This study evaluated the adsorption capacity of L. plantarum RS20 toward 3-PBA. Batch adsorption experiments indicated that the optimal adsorption conditions were a temperature of 37 °C and initial pH of 6.0–8.0, under which the removal rate was positively correlated with the cell concentration. In addition, there was no link between the incubation time and adsorption rate. The kinetic study showed that the adsorption process fitted well with the pseudo-second-order model, and the adsorption isotherms could be described by both Langmuir and Freundlich equations. Heat and acid treatments showed that the ability of strain RS20 in removing 3-PBA was independent of microbial vitality. Indeed, it was involved with chemisorption and physisorption via the cell walls. The cell walls made the highest contribution to 3-PBA removal, according to the adsorption experiments using different cellular components. This finding was further reconfirmed by SEM. FTIR spectroscopy analysis indicated that carboxyl, hydroxyl, amino groups, and –C–N were the functional sites for the binding of 3-PBA. The co-culture experiments showed that the adsorption of strain RS20 enhanced the degradation of 3-PBA by strain SC-1. Strain RS20 could also survive and effectively remove 3-PBA in simulated digestive juices. Collectively, strain RS20 could be employed as a biological detoxification agent for humans and animals by eliminating 3-PBA from foods, feeds, and the digestive tract in the future.
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Affiliation(s)
- Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Lu Hu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Xiaoyan Hou
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
- Institute of Food Processing and Safety, Sichuan Agricultural University, Ya’an 625014, China
| | - Qin Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Aiping Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Shujuan Chen
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Xiaolin Ao
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
- Institute of Food Processing and Safety, Sichuan Agricultural University, Ya’an 625014, China
| | - Xinjie Hu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Li He
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
| | - Huaqiao Tang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China;
| | - Daomei Huang
- Integrated Agricultural Development Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China;
| | - Yong Yang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
- Institute of Food Processing and Safety, Sichuan Agricultural University, Ya’an 625014, China
| | - Likou Zou
- College of Resources, Sichuan Agricultural University, Chengdu 611130, China;
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (J.L.); (K.H.); (L.H.); (X.H.); (Q.L.); (A.L.); (S.C.); (X.A.); (X.H.); (L.H.); (Y.Y.)
- Institute of Food Processing and Safety, Sichuan Agricultural University, Ya’an 625014, China
- Correspondence: ; Tel.: +86-0835-2882187
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