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Perez AV, Gaitan-Oyola JA, Vargas-Delgadillo DP, Castillo JJ, Barbosa O, Fernandez-Lafuente R. Synthesis and Characterization of Cross-Linked Aggregates of Peroxidase from Megathyrsus maximus (Guinea Grass) and Their Application for Indigo Carmine Decolorization. Molecules 2024; 29:2696. [PMID: 38893568 PMCID: PMC11173754 DOI: 10.3390/molecules29112696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/16/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024] Open
Abstract
We present the synthesis of a cross-linking enzyme aggregate (CLEAS) of a peroxidase from Megathyrsus maximus (Guinea Grass) (GGP). The biocatalyst was produced using 50%v/v ethanol and 0.88%w/v glutaraldehyde for 1 h under stirring. The immobilization yield was 93.74% and the specific activity was 36.75 U mg-1. The biocatalyst surpassed by 61% the free enzyme activity at the optimal pH value (pH 6 for both preparations), becoming this increase in activity almost 10-fold at pH 9. GGP-CLEAS exhibited a higher thermal stability (2-4 folds) and was more stable towards hydrogen peroxide than the free enzyme (2-3 folds). GGP-CLEAS removes over 80% of 0.05 mM indigo carmine at pH 5, in the presence of 0.55 mM H2O2 after 60 min of reaction, a much higher value than when using the free enzyme. The operational stability showed a decrease of enzyme activity (over 60% in 4 cycles), very likely related to suicide inhibition.
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Affiliation(s)
- Angie V. Perez
- Grupo de Investigación en Materiales Porosos con Aplicaciones Ambientales y Tecnológicas, Departamento de Química, Universidad del Tolima, Ibagué 730006299, Colombia; (A.V.P.); (J.A.G.-O.); (D.P.V.-D.)
| | - Jorge A. Gaitan-Oyola
- Grupo de Investigación en Materiales Porosos con Aplicaciones Ambientales y Tecnológicas, Departamento de Química, Universidad del Tolima, Ibagué 730006299, Colombia; (A.V.P.); (J.A.G.-O.); (D.P.V.-D.)
| | - Diana P. Vargas-Delgadillo
- Grupo de Investigación en Materiales Porosos con Aplicaciones Ambientales y Tecnológicas, Departamento de Química, Universidad del Tolima, Ibagué 730006299, Colombia; (A.V.P.); (J.A.G.-O.); (D.P.V.-D.)
| | - John J. Castillo
- Grupo de Investigación en Bioquímica y Microbiología, Escuela de Química, Universidad Industrial de Santander, Bucaramanga 680002, Colombia;
| | - Oveimar Barbosa
- Grupo de Investigación en Materiales Porosos con Aplicaciones Ambientales y Tecnológicas, Departamento de Química, Universidad del Tolima, Ibagué 730006299, Colombia; (A.V.P.); (J.A.G.-O.); (D.P.V.-D.)
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis, ICP-CSIC, Campus Cantoblanco UAM-CSIC, C/Marie Curie 2, 28049 Madrid, Spain
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Jia M, Ma J, Zhou Q, Liu L, Jie X, Liu H, Qin S, Li C, Sui F, Fu H, Xie H, Wang L, Zhao P. Effect of calcium and phosphorus on ammonium and nitrate nitrogen adsorption onto iron (hydr)oxides surfaces: CD-MUSIC model and DFT computation. CHEMOSPHERE 2024; 357:142070. [PMID: 38641297 DOI: 10.1016/j.chemosphere.2024.142070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/03/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
Calcium (Ca2+) and phosphorous (PO43-) significantly influence the form and effectiveness of nitrogen (N), however, the precise mechanisms governing the adsorption of ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) are still lacking. This study employed batch adsorption experiments, charge distribution and multi-site complexation (CD-MUSIC) models and density functional theory (DFT) calculations to elucidate the mechanism by which Ca2+ and PO43- affect the adsorption of NH4+-N and NO3--N on the goethite (GT) surface. The results showed that the adsorption of NH4+-N on the GT exhibited an initial increase followed by a decrease as pH increased, peaking at a pH of 8.5. Conversely, the adsorption of NO3--N decreased with rising pH. According to the CD-MUSIC model, Ca2+ minimally affected the NH4+-N adsorption on the GT but enhanced NO3--N adsorption via electrostatic interaction, promoting the adsorption of ≡FeOH-NO3- and ≡Fe3O-NO3- species. Similarly, PO43- inhibited the adsorption of ≡FeOH-NO3- and ≡Fe3O-NO3- species. However, PO43- boosted NH4+-N adsorption by facilitating the formation of ≡Fe3O-NH4+ via electrostatic interaction and site competition. DFT calculations indicates that although bidentate phosphate (BP) was beneficial to stabilize NH4+-N than monodentate phosphate (SP), SP-NH4+ was the main adsorption configuration at pH 5.5-9.5 owing the prevalence of SP on the GT surface under site competition of NH4+-N. The results of CD-MUSIC model and DFT calculation were verified mutually, and provide novel insights into the mechanisms underlying N fixation and migration in soil.
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Affiliation(s)
- Mengke Jia
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Jie Ma
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Qiongqiong Zhou
- College of Horticulture, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Lijie Liu
- Agricultural Ecology and Resource Protection Station, Agriculture and Rural Bureau, Xinxiang, Henan, 453000, China
| | - Xiaolei Jie
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Hongen Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Shiyu Qin
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Chang Li
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Fuqing Sui
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Haichao Fu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd, Hangzhou, Zhejiang, 310003, China
| | - Long Wang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China.
| | - Peng Zhao
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, 450002, China.
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Fehrenbach GW, Murphy E, Pogue R, Carter F, Clifford E, Major I. Comprehensive analysis and assessment of exposure to enteric viruses and bacteria in shellfish. MARINE ENVIRONMENTAL RESEARCH 2024; 196:106404. [PMID: 38341981 DOI: 10.1016/j.marenvres.2024.106404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/30/2024] [Accepted: 02/07/2024] [Indexed: 02/13/2024]
Abstract
Shellfish species, including oysters, clams, and mussels, are extensively cultured in coastal waters. Its location is determined by factors such as nutrient availability, water temperature, tidal cycle, and the presence of contaminants such as Escherichia coli and enteric viruses. With the expansion and intensification of human activities at vicinities, the presence of anthropogenic contaminants has increased, threatening shellfish farms and consumer safety give the prevalent consumption of raw shellfish. This literature review aims to provide a comprehensive analysis of the dietary exposure and assess the risk associated with enteric viruses and bacteria detected in shellfish. The predominant bacteria and viruses detected in shellfish are reported, and the potential interrelation is discussed. The main characteristics of each contaminant and shellfish were reviewed for a more comprehensive understanding. To facilitate a direct estimation of exposure, the estimated daily intake (EDI) of bacteria was calculated based on the average levels of E. coli in shellfish, as reported in the literature. The mean daily ingestion of seafood in each of the five continents was considered. Asia exhibited the highest intake of contaminants, with an average of ±5.6 E. coli units/day.kg body weight in cockles. Simulations were conducted using recommended shellfish consumption levels established by state agencies, revealing significantly lower (p < 0.01) EDI for all continents compared to estimations based on recommended levels. This indicates a higher risk associated with healthy shellfish ingestion, potentially leading to increased intoxication incidents with a change in dietary habits. To promote a healthier lifestyle through increased shellfish consumptions, it is imperative to reduce the exposure of shellfish species to bacteria and enteric viruses. The conventional use of E. coli as the sole indicator for consumption safety and water quality in shellfish farms has been deemed insufficient. Instances where shellfish met E. coli limits established by state agencies were often found to be contaminated with human enteric viruses. Therefore, a holistic approach considering the entire production chain is necessary to support the shellfish industry and ensure food safety.
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Affiliation(s)
- Gustavo Waltzer Fehrenbach
- Materials Research Institute, Technological University of the Shannon, Midlands Campus, N37 HD68, Athlone, Ireland.
| | - Emma Murphy
- Materials Research Institute, Technological University of the Shannon, Midlands Campus, N37 HD68, Athlone, Ireland; LIFE - Health and Biosciences Research Institute, Technological University of the Shannon, Midwest Campus, V94 EC5T, Limerick, Ireland
| | - Robert Pogue
- Post-Graduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasilia, 71966-700, Brasilia, Brazil
| | - Frank Carter
- Coney Island Shellfish Ltd., F91 YH56, Sligo, Ireland
| | - Eoghan Clifford
- School of Engineering, National University of Ireland Galway, H91 HX31, Galway, Ireland; Ryan Institute, National University of Ireland Galway, H91 HX31, Galway, Ireland
| | - Ian Major
- Materials Research Institute, Technological University of the Shannon, Midlands Campus, N37 HD68, Athlone, Ireland
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Kundu S, Biswas A, Ray A, Roy S, Das Gupta S, Ramteke MH, Kumar V, Das BK. Bisphenol A contamination in Hilsa shad and assessment of potential health hazard: A pioneering investigation in the national river Ganga, India. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132532. [PMID: 37748308 DOI: 10.1016/j.jhazmat.2023.132532] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/27/2023]
Abstract
The anadromous Hilsa, often known as the "Queen of Fishes" (Tenualosa ilisha), is the most valuable fishery in the Ganga-Hooghly delta estuary. Although BPA exposure has been shown to be harmful to aquatic organisms, no research has looked at the effects of BPA on the commercially valuable Hilsa shad of river Ganga. To close this information vacuum, we examined BPA levels in Hilsa fish from the Ganga estuary. Liver, muscle, kidney, and gonads were all positive for BPA among the Hilsa fish of all ages. Liver BPA levels were highest in adult males (272.16 ± 0.38 ng/g-dw), and lowest in juveniles (5.46 ± 0.06 ng/g-dw). BPA concentrations in the Hilsa shad muscle were highest in reproductively mature females (196.23 ± 0.41 ng/g-dw). The study also discovered a correlation between fish development and BPA exposure, with higher levels of BPA being identified in adult Hilsa species. This is the first study to look at the impact of BPA pollution on aquatic ecosystems and fisheries, and it showed that Hilsa shad is contaminated with BPA and poses health hazards to human beings. The results, which demonstrate BPA contamination, are useful for protecting Hilsa in the river Ganga.
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Affiliation(s)
- Sourav Kundu
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Ayan Biswas
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Archisman Ray
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Shreya Roy
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Subhadeep Das Gupta
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Mitesh Hiradas Ramteke
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Vikas Kumar
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India
| | - Basanta Kumar Das
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, West Bengal, India.
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Castaño-Ortiz JM, Courant F, Gomez E, García-Pimentel MM, León VM, Campillo JA, Santos LHMLM, Barceló D, Rodríguez-Mozaz S. Combined exposure of the bivalve Mytilus galloprovincialis to polyethylene microplastics and two pharmaceuticals (citalopram and bezafibrate): Bioaccumulation and metabolomic studies. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131904. [PMID: 37356174 DOI: 10.1016/j.jhazmat.2023.131904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/09/2023] [Accepted: 06/19/2023] [Indexed: 06/27/2023]
Abstract
Pharmaceuticals and microplastics constitute potential hazards in aquatic systems, but their combined effects and underlying toxicity mechanisms remain largely unknown. In this study, a simultaneous characterization of bioaccumulation, associated metabolomic alterations and potential recovery mechanisms was performed. Specifically, a bioassay on Mediterranean mussels (Mytilus galloprovincialis) was carried out with polyethylene microplastics (PE-MPLs, 1 mg/L) and citalopram or bezafibrate (500 ng/L). Single and co-exposure scenarios lasted 21 days, followed by a 7-day depuration period to assess their potential recovery. PE-MPLs delayed the bioaccumulation of citalopram (lower mean at 10 d: 447 compared to 770 ng/g dw under single exposure), although reaching similar tissue concentrations after 21 d. A more limited accumulation of bezafibrate was observed overall, regardless of PE-MPLs co-exposure (<MQL-3.2 ng/g dw). Metabolic profiles showed a strong effect of pharmaceuticals, generally independent of PE-MPLs co-exposure. Alterations of the citrate cycle (bezafibrate exposure) and steroid and prostaglandin metabolism (citalopram and bezafibrate exposures) were highlighted. PE-MPLs alone also impacted metabolic pathways, such as neurotransmitters or purine metabolism. After depuration, relevant latent or long-lasting effects were demonstrated as, for instance, the effect of citalopram on neurotransmitters metabolism. Altogether, the observed molecular-level responses to pharmaceuticals and/or PE-MPLs may lead to a dysregulation of mussels' reproduction, energy metabolism, and/or immunity.
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Affiliation(s)
- J M Castaño-Ortiz
- University of Girona, Girona, Spain; Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003 Girona, Spain.
| | - F Courant
- HydroSciences Montpellier, University of Montpellier, IRD, CNRS, Montpellier, France
| | - E Gomez
- HydroSciences Montpellier, University of Montpellier, IRD, CNRS, Montpellier, France
| | - M M García-Pimentel
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Murcia, C/Varadero 1, San Pedro del Pinatar, Murcia, Spain
| | - V M León
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Murcia, C/Varadero 1, San Pedro del Pinatar, Murcia, Spain
| | - J A Campillo
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Murcia, C/Varadero 1, San Pedro del Pinatar, Murcia, Spain
| | - L H M L M Santos
- University of Girona, Girona, Spain; Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003 Girona, Spain
| | - D Barceló
- University of Girona, Girona, Spain; Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003 Girona, Spain; Institute of Environmental Assessment and Water Research (IDAEA-CSIC) Severo Ochoa Excellence Centre, Department of Environmental Chemistry, C/ Jordi Girona 18-26, 08034 Barcelona, Spain
| | - S Rodríguez-Mozaz
- University of Girona, Girona, Spain; Catalan Institute for Water Research (ICRA-CERCA), C/ Emili Grahit 101, 17003 Girona, Spain
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Rowan NJ. Current decontamination challenges and potentially complementary solutions to safeguard the vulnerable seafood industry from recalcitrant human norovirus in live shellfish: Quo Vadis? THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 874:162380. [PMID: 36841407 DOI: 10.1016/j.scitotenv.2023.162380] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Safeguarding the seafood industry is important given its contribution to supporting our growing global population. However, shellfish are filter feeders that bioaccumulate microbial contaminants in their tissue from wastewater discharged into the same coastal growing environments leading to significant human disease outbreaks unless appropriately mitigated. Removal or inactivation of enteric viruses is very challenging particularly as human norovirus (hNoV) binds to specific histo-blood ligands in live oyster tissue that are consumed raw or lightly cooked. The regulatory framework that sets out use of clean seawater and UV disinfection is appropriate for bacterial decontamination at the post-harvest land-based depuration (cleaning) stage. However, additional non-thermal technologies are required to eliminate hNoV in live shellfish (particularly oysters) where published genomic studies report that low-pressure UV has limited effectiveness in inactivating hNoV. The use of the standard genomic detection method (ISO 15, 216-1:2017) is not appropriate for assessing the loss of infectious hNoV in treated live shellfish. The use of surrogate viral infectivity methods appear to offer some insight into the loss of hNoV infectiousness in live shellfish during decontamination. This paper reviews the use of existing and potentially other combinational treatment approaches to enhance the removal or inactivation of enteric viruses in live shellfish. The use of alternative and complementary novel diagnostic approaches to discern viable hNoV are discussed. The effectiveness and virological safety of new affordable hNoV intervention(s) require testing and validating at commercial shellfish production in conjunction with laboratory-based research. Appropriate risk management planning should encompass key stakeholders including local government and the wastewater industry. Gaining a mechanistic understanding of the relationship between hNoV response at molecular and structural levels in individually treated oysters as a unit will inform predictive modeling and appropriate treatment technologies. Global warming of coastal growing environments may introduce additional contaminant challenges (such as invasive species); thus, underscoring need to develop real-time ecosystem monitoring of growing environments to alert shellfish producers to appropriately mitigate these threats.
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Affiliation(s)
- Neil J Rowan
- Centre for Sustainable Disinfection and Sterilization, Bioscience Research Institute, Technological University of the Shannon Midlands Midwest, Athlone Campus, Ireland.
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Fehrenbach GW, Murphy E, Pogue R, Carter F, Clifford E, Major I, Rowan N. Pulsed ultraviolet (PUV) disinfection of artificially contaminated seawater seeded with high levels of pathogen disease indicators as an alternative for the shellfish industry depuration systems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27286-6. [PMID: 37155092 DOI: 10.1007/s11356-023-27286-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 04/24/2023] [Indexed: 05/10/2023]
Abstract
The increase in pathogen levels in seawater threatens the safety of entire aquatic ecosystems. Foodborne pathogens can potentially accumulate in shellfish, especially in filter feeders such as bivalves, requiring an efficient depuration process before consumption. Alternative approaches to promote a cost-efficient purge at depuration plants are urgently needed. A small prototype pulsed ultraviolet (PUV) light recirculation system was designed, and its depuration potential was tested in a seawater matrix artificially contaminated with high levels of microbial pathogens Escherichia coli, Staphylococcus aureus, Salmonella typhimurium, Bacillus cereus and Candida albicans. The analysis of treatment parameters including voltage, number of pulses and duration of treatment was performed to ensure the highest reduction in contaminant levels. Optimal PUV disinfection was attained at 60 pulses/min at 1 kV for 10 min (a UV output of 12.9 J/cm2). All reductions were statistically significant, and the greatest was observed for S. aureus (5.63 log10), followed by C. albicans (5.15 log10), S. typhimurium (5 log10), B. cereus (4.59 log10) and E. coli (4.55 log10). PUV treatment disrupted the pathogen DNA with the result that S. aureus, C. albicans and S. typhimurium were not detectable by PCR. Regulations were reviewed to address the applicability of PUV treatment as a promising alternative to assist in the reduction of microbial pathogens at depuration plants due to its high efficiency, short treatment period, high UV dose and recirculation system as currently employed in shellfish depuration plants.
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Affiliation(s)
- Gustavo Waltzer Fehrenbach
- Materials Research Institute, Technological University of the Shannon - Midlands Campus, N37 HD68, Athlone, Ireland.
| | - Emma Murphy
- Materials Research Institute, Technological University of the Shannon - Midlands Campus, N37 HD68, Athlone, Ireland
- LIFE - Health and Biosciences Research Institute, Technological University of the Shannon - Midwest Campus, V94 EC5T, Limerick, Ireland
| | - Robert Pogue
- Post-Graduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasilia, 71966-700, Brasilia, Brazil
- Center for Sustainable Disinfection and Sterilization, Bioscience Research Institute, Technological University of the Shannon - Midlands Campus, N37 F6D7, Athlone, Ireland
| | - Frank Carter
- Coney Island Shellfish Ltd., F91 YH56, Sligo, Ireland
| | - Eoghan Clifford
- School of Engineering, National University of Ireland Galway, H91 HX31, Galway, Ireland
- Ryan Institute, National University of Ireland Galway, H91 HX31, Galway, Ireland
| | - Ian Major
- Materials Research Institute, Technological University of the Shannon - Midlands Campus, N37 HD68, Athlone, Ireland
| | - Neil Rowan
- Center for Sustainable Disinfection and Sterilization, Bioscience Research Institute, Technological University of the Shannon - Midlands Campus, N37 F6D7, Athlone, Ireland
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