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Mateus DMR, Ferraz E, Perna V, Sales P, Hipólito-Correia V. Essential oils and extracts of plants as biocides against microorganisms isolated from the ruins of the Roman city of Conímbriga (Portugal). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:40669-40677. [PMID: 37326731 PMCID: PMC11189986 DOI: 10.1007/s11356-023-28212-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Abstract
Biodeterioration of monumental complexes is in large part due to the proliferation of various microorganisms that attack the physical-chemical structures of support materials. Various conservation and restoration interventions use commercial biocides of synthetic origin, which exhibit some human and environmental toxicity and sometimes side effects on support materials. The main objective of this work is the assessment of new biocides obtained from endemic Mediterranean plants, to be used in the preservation of cultural heritage with the goal of contributing to the sustainable use of ecosystems and to the development of Mediterranean local communities. The biocidal potential of essential oils (EOs) and solvent extracts (SEs) (ethanol and n-hexane) obtained from four plants were evaluated: Thymus mastichina (Tm), Mentha pulegium (Mp), Foeniculum vulgare (Fv), and Lavandula viridis (Lv). Microorganisms collected at an emblematic site of Portuguese cultural heritage, the ruins of the Roman city of Conímbriga, were used to evaluate the biocidal activity of the EOs and SEs. It can be concluded that (i) SEs did not exhibit fungicidal nor bactericidal activity, except for one fungus specie; (ii) biocidal activity of EOs depends on the microorganism specie. The EOs showed a relative average biocidal activity (when compared to the commercial biocide Biotin T (1% v/v)) of 64%, 32%, 30%, and 25% for Mp, Fv, Lv, and Tm. On carbonate rocks, the application of Fv and Mp EOs up to 3 layers do not promote significant color/tonality changes in the surface of the rock. And the application of three layers of Lv and four layers of Fv, Mp, and Lv OEs only promote the occurrence of blurs or stains (variation of tonality) on rocks that presents very low porosity. It can also be noted that the EO of Mp has the broadest spectrum of activity. The results allow considering the use of Mp, Fv, Lv, and Tm EOs as valid alternatives to commercial biocides, providing a prospective application in the field of green conservation of building heritage.
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Affiliation(s)
- Dina M R Mateus
- Technology, Restoration and Arts Enhancement Center (TECHN&ART), Instituto Politécnico de Tomar, Quinta Do Contador, Estrada da Serra, 2300-313, Tomar, Portugal.
| | - Eduardo Ferraz
- Technology, Restoration and Arts Enhancement Center (TECHN&ART), Instituto Politécnico de Tomar, Quinta Do Contador, Estrada da Serra, 2300-313, Tomar, Portugal
| | - Vera Perna
- Instituto Politécnico de Tomar, Quinta Do Contador, Estrada da Serra, 2300-313, Tomar, Portugal
| | - Pedro Sales
- Museu Monográfico de Conímbriga, 3150-220, Condeixa-a-Velha, Portugal
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Novello E, Scalzo G, D’Agata G, Raucci MG, Ambrosio L, Soriente A, Tomasello B, Restuccia C, Parafati L, Consoli GML, Ferreri L, Rescifina A, Zagni C, Zampino DC. Synthesis, Characterisation, and In Vitro Evaluation of Biocompatibility, Antibacterial and Antitumor Activity of Imidazolium Ionic Liquids. Pharmaceutics 2024; 16:642. [PMID: 38794304 PMCID: PMC11125126 DOI: 10.3390/pharmaceutics16050642] [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: 03/29/2024] [Revised: 04/30/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
In recent decades, ionic liquids (ILs) have garnered research interest for their noteworthy properties, such as thermal stability, low or no flammability, and negligible vapour pressure. Moreover, their tunability offers limitless opportunities to design ILs with properties suitable for applications in many industrial fields. This study aims to synthetise two series of methylimidazolium ILs bearing long alkyl chain in their cations (C9, C10, C12, C14, C16, C18, C20) and with tetrafluoroborate (BF4) and the 1,3-dimethyl-5-sulfoisophthalate (DMSIP) as counter ions. The ILs were characterised using 1H-NMR and MALDI-TOF, and their thermal behaviour was investigated through DSC and TGA. Additionally, the antimicrobial, anticancer, and cytotoxic activities of the ILs were analysed. Moreover, the most promising ILs were incorporated at different concentrations (0.5, 1, 5 wt%) into polyvinyl chloride (PVC) by solvent casting to obtain antimicrobial blend films. The thermal properties and stability of the resulting PVC/IL films, along with their hydrophobicity/hydrophilicity, IL surface distribution, and release, were studied using DSC and TGA, contact angle (CA), SEM, and UV-vis spectrometry, respectively. Furthermore, the antimicrobial and cytotoxic properties of blends were analysed. The in vitro results demonstrated that the antimicrobial and antitumor activities of pure ILs against t Listeria monocytogenes, Escherichia coli, Pseudomonas fluorescens strains, and the breast cancer cell line (MCF7), respectively, were mainly dependent on their structure. These activities were higher in the series containing the BF4 anion and increased with the increase in the methylimidazolium cation alkyl chain length. However, the elongation of the alkyl chain beyond C16 induced a decrease in antimicrobial activity, indicating a cut-off effect. A similar trend was also observed in terms of in vitro biocompatibility. The loading of both the series of ILs into the PVC matrix did not affect the thermal stability of PVC blend films. However, their Tonset decreased with increased IL concentration and alkyl chain length. Similarly, both the series of PVC/IL films became more hydrophilic with increasing IL concentration and alkyl chain. The loading of ILs at 5% concentration led to considerable IL accumulation on the blend film surfaces (as observed in SEM images) and, subsequently, their higher release. The biocompatibility assessment with healthy human dermal fibroblast (HDF) cells and the investigation of antitumoral properties unveiled promising pharmacological characteristics. These findings provide strong support for the potential utilisation of ILs in biomedical applications, especially in the context of cancer therapy and as antibacterial agents to address the challenge of antibiotic resistance. Furthermore, the unique properties of the PVC/IL films make them versatile materials for advancing healthcare technologies, from drug delivery to tissue engineering and antimicrobial coatings to diagnostic devices.
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Affiliation(s)
- Elisabetta Novello
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy; (E.N.); (G.S.); (G.D.); (D.C.Z.)
| | - Giuseppina Scalzo
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy; (E.N.); (G.S.); (G.D.); (D.C.Z.)
| | - Giovanni D’Agata
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy; (E.N.); (G.S.); (G.D.); (D.C.Z.)
| | - Maria G. Raucci
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Napoli, Viale J.F. Kennedy n.54, Pad.20, 80125 Napoli, Italy; (L.A.); (A.S.)
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Napoli, Viale J.F. Kennedy n.54, Pad.20, 80125 Napoli, Italy; (L.A.); (A.S.)
| | - Alessandra Soriente
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Napoli, Viale J.F. Kennedy n.54, Pad.20, 80125 Napoli, Italy; (L.A.); (A.S.)
| | - Barbara Tomasello
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (B.T.); (A.R.)
| | - Cristina Restuccia
- Department of Agriculture, Food and Environment, University of Catania, Via Santa Sofia 100, 95123 Catania, Italy; (C.R.); (L.P.)
| | - Lucia Parafati
- Department of Agriculture, Food and Environment, University of Catania, Via Santa Sofia 100, 95123 Catania, Italy; (C.R.); (L.P.)
| | - Grazia M. L. Consoli
- Institute of Biomolecular Chemistry (ICB)-CNR, via Paolo Gaifami 18, 95126 Catania, Italy; (G.M.L.C.); (L.F.)
| | - Loredana Ferreri
- Institute of Biomolecular Chemistry (ICB)-CNR, via Paolo Gaifami 18, 95126 Catania, Italy; (G.M.L.C.); (L.F.)
| | - Antonio Rescifina
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (B.T.); (A.R.)
| | - Chiara Zagni
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (B.T.); (A.R.)
| | - Daniela C. Zampino
- Institute of Polymers, Composites and Biomaterials (IPCB)—CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy; (E.N.); (G.S.); (G.D.); (D.C.Z.)
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Liu X, Xia X, Liu Y, Li Z, Shi T, Zhang H, Dong Q. Recent advances on the formation, detection, resistance mechanism, and control technology of Listeria monocytogenes biofilm in food industry. Food Res Int 2024; 180:114067. [PMID: 38395584 DOI: 10.1016/j.foodres.2024.114067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/15/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024]
Abstract
Listeria monocytogenes is an important foodborne pathogen that causes listeriosis, a severe and fatal condition. Biofilms are communities of microorganisms nested within a self-secreted extracellular polymeric substance, and they protect L. monocytogenes from environmental stresses. Biofilms, once formed, can lead to the persistence of L. monocytogenes in processing equipment and are therefore considered to be a major concern for the food industry. This paper briefly introduces the recent advancements on biofilm formation characteristics and detection methods, and focuses on analysis of the mechanism of L. monocytogenes biofilm resistance; Moreover, this paper also summarizes and discusses the existing different techniques of L. monocytogenes biofilm control according to the physical, chemical, biological, and combined strategies, to provide a theoretical reference to aid the choice of effective control technology in the food industry.
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Affiliation(s)
- Xin Liu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Xuejuan Xia
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Yangtai Liu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Zhuosi Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Tianqi Shi
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China.
| | - Hongzhi Zhang
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China.
| | - Qingli Dong
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
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Balakrishnan A, Govindaraj S, Dhaipule NGK, Thirumalaisamy N, Anne RS, Sublime N, Philip J. Enhancing microbiologically influenced corrosion protection of carbon steels with silanized epoxy-biocide hybrid coatings. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:13302-13326. [PMID: 38243030 DOI: 10.1007/s11356-024-32014-9] [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: 11/07/2023] [Accepted: 01/10/2024] [Indexed: 01/21/2024]
Abstract
Microbial biofilms and microbiologically influenced corrosion (MIC) pose serious problems in pipelines transporting freshwater from the reservoir to service water systems and fire water systems of power reactors. The present work aims to design a silane-based epoxy-biocide hybrid coating along with antibacterial compounds on carbon steels (CS) for controlling the MIC of pipeline materials. The optimal inhibitory concentrations of biocides are identified and a robust protocol has been developed to prepare epoxy-based coatings impregnated with three biocides (25 ppm each of benzalkonium chloride, bronopol, and isothiazoline). Microbiological and accelerated corrosion studies were carried out by exposing the coated CS specimens to the enriched freshwater bacterial culture (FWC). As compared to the impedance value of 102 Ohms for the polished CS, the values were 106 and 105 Ohms, respectively, for epoxy-coated specimens (CSE) and epoxy-coated specimens impregnated with biocides (CSEB). The corrosion protection efficiency of CSE and CSEB coated specimens exposed to FWC was 99.9% and 98.1%, respectively. Confocal microscopic analysis showed the average biomass thickness was 51.3 ± 0.6 µm and 24.4 ± 0.5 µm, respectively, for CSE and CSEB specimens in comparison to 94.1 ± 0.2 µm on CS specimens. The improved anticorrosion and antifouling behaviors observed in the CSEB specimens suggest that the new coating strategy has the potential for the development of multifunctional hybrid epoxy coatings for pipeline materials to mitigate MIC-related issues in water-transporting pipeline systems.
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Affiliation(s)
- Anandkumar Balakrishnan
- Corrosion Science and Technology Division, MCG, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India.
- Homi Bhabha National Institute Kalpakkam, Mumbai, 400094, India.
| | - Sudharsan Govindaraj
- Department of Biotechnology, Vellore Institute of Technology, Vellore, 632014, India
| | - Nanda Gopala Krishna Dhaipule
- Corrosion Science and Technology Division, MCG, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India
| | - Nandakumar Thirumalaisamy
- Corrosion Science and Technology Division, MCG, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India
| | - Ravi Shankar Anne
- Corrosion Science and Technology Division, MCG, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India
- Homi Bhabha National Institute Kalpakkam, Mumbai, 400094, India
| | - Ningshen Sublime
- Corrosion Science and Technology Division, MCG, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India
- Homi Bhabha National Institute Kalpakkam, Mumbai, 400094, India
| | - John Philip
- Homi Bhabha National Institute Kalpakkam, Mumbai, 400094, India
- Materials Characterization Group, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India
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Maktabi S, Rashnavadi R, Tabandeh MR, Sourestani MM. Effective Inhibition of Listeria monocytogenes Biofilm Formation by Satureja rechingeri Essential Oil: Mechanisms and Implications. Curr Microbiol 2024; 81:77. [PMID: 38280935 DOI: 10.1007/s00284-023-03604-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/26/2023] [Indexed: 01/29/2024]
Abstract
Biofilm formation by foodborne pathogens, particularly Listeria monocytogenes, poses a significant challenge in food industry facilities. In this study, we investigated the inhibitory potential of Satureja rechingeri essential oil (Sr-EO) against L. monocytogenes growth and biofilm formation. Gas chromatography-mass spectrometry analysis revealed a high carvacrol content in Sr-EO, a compound with known antimicrobial properties. We examined the effects of Sr-EO on initial attachment and preformed biofilms, using crystal violet and MTT assays to quantify attached biomass and metabolic activity, respectively. Our results demonstrated that Sr-EO not only prevented initial attachment but also effectively disrupted preformed biofilms, indicating its potential as a biofilm-control agent. Microscopy analysis revealed alterations in bacterial cell membranes upon Sr-EO treatment, leading to increased permeability and cell death. Additionally, Sr-EO significantly suppressed bacterial motility, with concentrations exceeding 0.25 μL/mL completely inhibiting motility. Furthermore, gene expression analysis revealed the down regulation of genes associated with biofilm formation, attachment, and quorum sensing, suggesting that Sr-EO modulates bacterial gene transcription. These findings suggest that Sr-EO can be a promising candidate for controlling biofilm formation and bacterial contamination in food processing environments.
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Affiliation(s)
- Siavash Maktabi
- Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Box: 61355-145, Ahvaz, Iran.
| | - Roya Rashnavadi
- Graduated from Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Reza Tabandeh
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Koutsoumanis K, Allende A, Bolton D, Bover‐Cid S, Chemaly M, De Cesare A, Herman L, Hilbert F, Lindqvist R, Nauta M, Nonno R, Peixe L, Ru G, Simmons M, Skandamis P, Suffredini E, Fox E, Gosling R(B, Gil BM, Møretrø T, Stessl B, da Silva Felício MT, Messens W, Simon AC, Alvarez‐Ordóñez A. Persistence of microbiological hazards in food and feed production and processing environments. EFSA J 2024; 22:e8521. [PMID: 38250499 PMCID: PMC10797485 DOI: 10.2903/j.efsa.2024.8521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024] Open
Abstract
Listeria monocytogenes (in the meat, fish and seafood, dairy and fruit and vegetable sectors), Salmonella enterica (in the feed, meat, egg and low moisture food sectors) and Cronobacter sakazakii (in the low moisture food sector) were identified as the bacterial food safety hazards most relevant to public health that are associated with persistence in the food and feed processing environment (FFPE). There is a wide range of subtypes of these hazards involved in persistence in the FFPE. While some specific subtypes are more commonly reported as persistent, it is currently not possible to identify universal markers (i.e. genetic determinants) for this trait. Common risk factors for persistence in the FFPE are inadequate zoning and hygiene barriers; lack of hygienic design of equipment and machines; and inadequate cleaning and disinfection. A well-designed environmental sampling and testing programme is the most effective strategy to identify contamination sources and detect potentially persistent hazards. The establishment of hygienic barriers and measures within the food safety management system, during implementation of hazard analysis and critical control points, is key to prevent and/or control bacterial persistence in the FFPE. Once persistence is suspected in a plant, a 'seek-and-destroy' approach is frequently recommended, including intensified monitoring, the introduction of control measures and the continuation of the intensified monitoring. Successful actions triggered by persistence of L. monocytogenes are described, as well as interventions with direct bactericidal activity. These interventions could be efficient if properly validated, correctly applied and verified under industrial conditions. Perspectives are provided for performing a risk assessment for relevant combinations of hazard and food sector to assess the relative public health risk that can be associated with persistence, based on bottom-up and top-down approaches. Knowledge gaps related to bacterial food safety hazards associated with persistence in the FFPE and priorities for future research are provided.
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Gessi A, Formaglio P, Semeraro B, Summa D, Tamisari E, Tamburini E. Electrolyzed Hypochlorous Acid (HOCl) Aqueous Solution as Low-Impact and Eco-Friendly Agent for Floor Cleaning and Sanitation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6712. [PMID: 37754572 PMCID: PMC10530460 DOI: 10.3390/ijerph20186712] [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: 06/23/2023] [Revised: 08/07/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023]
Abstract
Recently, the use of disinfectants has been becoming a diffused and sometimes indiscriminate practice of paramount importance to limit the spreading of infections. The control of microbial contamination has now been concentrated on the use of traditional agents (i.e., hypochlorite, ozone). However, their prolonged use can cause potential treats, for both human health and environment. Currently, low-impact but effective biocides that are prepared in a way that avoids waste, with a very low toxicity, and safe and easy to handle and store are strongly needed. In this study, produced electrochemically activated hypochlorous (HOCl) acid solutions are investigated and proposed, integrated in a scrubbing machine for floor cleaning treatment. Such an innovative machine has been used for floor cleaning and sanitation in order to evaluate the microbial charge and organic dirt removal capacity of HOCl in comparison with a machine charged with traditional Ecolabel standard detergent. The potential damage on floor materials has also been investigated by means of Scanning Electron Microscope (SEM). A comparative Life Cycle Assessment (LCA) analysis has been carried out for evaluating the sustainability of the use of the HOCl-based and detergent-based machine.
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Affiliation(s)
- Alessandro Gessi
- ENEA Research Center, SSPT-MET-DISPREV, Via Martiri di Montesole, 40129 Bologna, Italy;
| | - Paolo Formaglio
- GATEGREEN Srl, Via Armari 9, 44121 Ferrara, Italy; (P.F.); (B.S.)
- Department of Chemical, Pharmaceutical and Agrarian Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy;
| | - Bruno Semeraro
- GATEGREEN Srl, Via Armari 9, 44121 Ferrara, Italy; (P.F.); (B.S.)
| | - Daniela Summa
- Department of Chemical, Pharmaceutical and Agrarian Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy;
- Department of Environmental and Prevention Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy;
| | - Elena Tamisari
- Department of Environmental and Prevention Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy;
| | - Elena Tamburini
- Department of Environmental and Prevention Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy;
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Ali A, Zahra A, Kamthan M, Husain FM, Albalawi T, Zubair M, Alatawy R, Abid M, Noorani MS. Microbial Biofilms: Applications, Clinical Consequences, and Alternative Therapies. Microorganisms 2023; 11:1934. [PMID: 37630494 PMCID: PMC10459820 DOI: 10.3390/microorganisms11081934] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/05/2023] [Accepted: 07/08/2023] [Indexed: 08/27/2023] Open
Abstract
Biofilms are complex communities of microorganisms that grow on surfaces and are embedded in a matrix of extracellular polymeric substances. These are prevalent in various natural and man-made environments, ranging from industrial settings to medical devices, where they can have both positive and negative impacts. This review explores the diverse applications of microbial biofilms, their clinical consequences, and alternative therapies targeting these resilient structures. We have discussed beneficial applications of microbial biofilms, including their role in wastewater treatment, bioremediation, food industries, agriculture, and biotechnology. Additionally, we have highlighted the mechanisms of biofilm formation and clinical consequences of biofilms in the context of human health. We have also focused on the association of biofilms with antibiotic resistance, chronic infections, and medical device-related infections. To overcome these challenges, alternative therapeutic strategies are explored. The review examines the potential of various antimicrobial agents, such as antimicrobial peptides, quorum-sensing inhibitors, phytoextracts, and nanoparticles, in targeting biofilms. Furthermore, we highlight the future directions for research in this area and the potential of phytotherapy for the prevention and treatment of biofilm-related infections in clinical settings.
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Affiliation(s)
- Asghar Ali
- Clinical Biochemistry Lab, D/O Biochemistry, School of Chemical and Lifesciences, Jamia Hamdard, New Delhi 110062, India;
| | - Andaleeb Zahra
- Department of Botany, School of Chemical and Lifesciences, Jamia Hamdard, New Delhi 110062, India;
| | - Mohan Kamthan
- Clinical Biochemistry Lab, D/O Biochemistry, School of Chemical and Lifesciences, Jamia Hamdard, New Delhi 110062, India;
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Thamer Albalawi
- Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Mohammad Zubair
- Department of Medical Microbiology, Faculty of Medicine, University of Tabuk, Tabuk 71491, Saudi Arabia; (M.Z.); (R.A.)
| | - Roba Alatawy
- Department of Medical Microbiology, Faculty of Medicine, University of Tabuk, Tabuk 71491, Saudi Arabia; (M.Z.); (R.A.)
| | - Mohammad Abid
- Department of Biosciences, Jamia Millia Islamia, New Delhi 110025, India;
| | - Md Salik Noorani
- Department of Botany, School of Chemical and Lifesciences, Jamia Hamdard, New Delhi 110062, India;
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9
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Liu H, Zhang J, Liu J, Cao G, Xu F, Li X. Bactericidal Mechanisms of Chlorine Dioxide against Beta-Hemolytic Streptococcus CMCC 32210. Curr Issues Mol Biol 2023; 45:5132-5144. [PMID: 37367075 DOI: 10.3390/cimb45060326] [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: 04/26/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/28/2023] Open
Abstract
Chlorine dioxide is a globally recognized green and efficient disinfectant. This study aims to investigate the bactericidal mechanism of chlorine dioxide using beta-hemolytic Streptococcus (BHS) CMCC 32210 as a representative strain. BHS was exposed to chlorine dioxide, the minimum bactericidal concentration (MBC) values of chlorine dioxide against BHS were determined by the checkerboard method in preparation for subsequent tests. Cell morphology was observed using electron microscopy. Protein content leakage, adenosine triphosphatase (ATPase) activity, and lipid peroxidation were determined by kits, and DNA damage was determined using agar gel electrophoresis. The concentration of chlorine dioxide during disinfection showed a linear relationship with the concentration of BHS. Scanning electron microscopy (SEM) results showed that chlorine dioxide caused significant damage to the cell walls of BHS at a concentration of 50 mg/L, but had no significant effect on Streptococcus exposed to different exposure times. Furthermore, the extracellular protein concentration increased with increasing chlorine dioxide concentration, while the total protein content remained unchanged. The activities of Na+/K+-ATPase and Ca2+/Mg2+-ATPase decreased with increasing chlorine dioxide concentration. Chlorine dioxide treatment led to significant lipid peroxidation and DNA degradation in BHS. Leakage of intracellular components indicated that chlorine dioxide damaged the cell membrane of BHS. Chlorine dioxide exposure resulted in oxidative damage to lipids and proteins, which negatively impacted the cell wall and membrane of Streptococcus. This caused increased permeability and inactivation of key enzymes (Na+/K+-ATPase and Ca2+/Mg2+-ATPase) involved in respiratory metabolism, ultimately leading to DNA degradation and bacterial death due to either content leakage or metabolic failure.
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Affiliation(s)
- Huan Liu
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jingju Zhang
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jing Liu
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guangjie Cao
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Fei Xu
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Animal Antimicrobial Resistance Surveillance, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Xiubo Li
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Animal Antimicrobial Resistance Surveillance, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
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10
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Antimicrobial and Antibiofilm Potential of Thymus vulgaris and Cymbopogon flexuosus Essential Oils against Pure and Mixed Cultures of Foodborne Bacteria. Antibiotics (Basel) 2023; 12:antibiotics12030565. [PMID: 36978432 PMCID: PMC10044171 DOI: 10.3390/antibiotics12030565] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
The spread of pathogenic and food spoilage microorganisms through the food chain still faces major mitigation challenges, despite modern advances. Although multiple cleaning and disinfection procedures are available for microbial load reduction in food-related settings, microbes can still remain on surfaces, equipment, or machinery, especially if they have the ability to form biofilms. The present study assessed the biofilm-forming properties of pure and mixed cultures of foodborne and spoilage bacteria (Listeria monocytogenes, Enterococcus faecalis, Aeromonas hydrophila, Brochothrix thermosphacta), using polystyrene and stainless steel contact surfaces. Subsequently, the antimicrobial and antibiofilm properties of Thymus vulgaris and Cymbopogon flexuosus essential oils—EOs—were evaluated against these bacteria. Moreover, in silico prediction of the absorption and toxicity values of the EOs’ major constituents was also performed, perceiving the putative application in food-related settings. Overall, biofilm formation was observed for all microbes under study, at different temperatures and both contact surfaces. In polystyrene, at 25 °C, when comparing pure with mixed cultures, the combination Listeria–Aeromonas achieved the highest biofilm biomass. Moreover, at 4 °C, increased biofilm formation was detected in stainless steel. Regarding thyme, this EO showed promising antimicrobial features (especially against A. hydrophila, with a MIC of 0.60 µg/µL) and antibiofilm abilities (MBEC of 110.79 µg/µL against L. monocytogenes, a major concern in food settings). As for lemongrass EO, the highest antimicrobial activity, with a MIC of 0.49 µg/µL, was also observed against L. monocytogenes. Overall, despite promising results, the in situ effectiveness of these essential oils, alone or in combination with other antimicrobial compounds, should be further explored.
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Boivin L, Harvey PD. Virus Management Using Metal-Organic Framework-Based Technologies. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36892577 DOI: 10.1021/acsami.3c00922] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The eradication and isolation of viruses are two concurrent approaches to protect ourselves from viral infections and diseases. The quite versatile porous materials called metal-organic frameworks (MOFs), have recently emerged as efficient nanosized tools to manage viruses, and several strategies to accomplish these tasks have been developed. This review describes these strategies employing nanoscale MOFs against SARS-CoV-2, HIV-1, tobacco mosaic virus, etc., which include the sequestration by host-guest penetration inside pores, mineralization, design of a physical barrier, controlled delivery of organic and inorganic antiviral drugs or bioinhibitors, photosensitization of singlet oxygen, and direct contact with inherently cytotoxic MOFs.
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Affiliation(s)
- Léo Boivin
- Département de Chimie, Université de Sherbrooke, Québec J1K 2R1, Canada
| | - Pierre D Harvey
- Département de Chimie, Université de Sherbrooke, Québec J1K 2R1, Canada
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12
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Zampino DC, Samperi F, Mancuso M, Ferreri T, Ferreri L, Dattilo S, Mirabella EF, Carbone DC, Recca G, Scamporrino AA, Novello E, Puglisi C. Polymer Blends Based on 1-Hexadecyl-3-methyl Imidazolium 1,3-Dimethyl 5-Sulfoisophthalate Ionic Liquid: Thermo-Mechanical, Surface Morphology and Antibacterial Properties. Polymers (Basel) 2023; 15:polym15040970. [PMID: 36850254 PMCID: PMC9965557 DOI: 10.3390/polym15040970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/12/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
In this study, antibacterial polymer blends based on Polyvinyl Chloride (PVC) and Polystyrene-Ethylene-Butylene-Styrene (SEBS), loaded with the ionic liquid (IL) 1-hexadecyl-3-methyl imidazolium 1,3-dimethyl 5-sulfoisophthalate (HdmimDMSIP) at three different concentrations (1%, 5%, and 10%), were produced. The IL/blends were characterized by their thermo-mechanical properties, surface morphology, and wettability. IL release from the blends was also evaluated. The agar diffusion method was used to test the antibacterial activity of the blends against Staphylococcus epidermidis and Escherichia coli. Results from thermal analyses showed compatibility between the IL and the PVC matrix, while phase separation in the SEBS/IL blends was observed. These results were confirmed using PY-GC MS data. SEM analyses highlighted abundant IL deposition on PVC blend film surfaces containing the IL at 5-10% concentrations, whereas the SEBS blend film surfaces showed irregular structures similar to islands of different sizes. Data on water contact angle proved that the loading of the IL into both polymer matrices induced higher wettability of the blends' surfaces, mostly in the SEBS films. The mechanical analyses evidenced a lowering of Young's Modulus, Tensile Stress, and Strain at Break in the SEBS blends, according to IL concentration. The PVC/IL blends showed a similar trend, but with an increase in the Strain at Break as IL concentration in the blends increased. Both PVC/IL and SEBS/IL blends displayed the best performance against Staphylococcus epidermidis, being active at low concentration (1%), whereas the antimicrobial activity against Escherichia coli was lower than that of S. epidermidis. Release data highlighted an IL dose-dependent release. These results are promising for a versatile use of these antimicrobial polymers in a variety of fields.
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Affiliation(s)
- Daniela C. Zampino
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
- Correspondence: (D.C.Z.); (F.S.)
| | - Filippo Samperi
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
- Correspondence: (D.C.Z.); (F.S.)
| | - Monique Mancuso
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR, Section of Messina, Spianata San Raineri, 86, 98122 Messina, Italy
- Department of Integrative Marine Ecology, Stazione Zoologica “Anton Dohrn”, Sicily Marine Centre, Contrada Porticatello, 29, 98167 Messina, Italy
| | - Tiziana Ferreri
- Institute of Biomolecular Chemistry (ICB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Loredana Ferreri
- Institute of Biomolecular Chemistry (ICB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Sandro Dattilo
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Emanuele F. Mirabella
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Domenico C. Carbone
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Giuseppe Recca
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Andrea A. Scamporrino
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Elisabetta Novello
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
| | - Concetto Puglisi
- Institute of Polymers, Composites and Biomaterials (IPCB)-CNR, Section of Catania, Via Paolo Gaifami, 18, 95126 Catania, Italy
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13
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Wang Y, Wang C, Yang X, Ma K, Guo P, Sun Q, Jia S, Pan J. Analysis and control of fungal deterioration on the surface of pottery figurines unearthed from the tombs of the Western Han Dynasty. Front Microbiol 2022; 13:956774. [PMID: 36046016 PMCID: PMC9421245 DOI: 10.3389/fmicb.2022.956774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/28/2022] [Indexed: 12/04/2022] Open
Abstract
In April 2020, 232 tombs of the Western Han Dynasty were found in Sundayuan, Heze City. In total, 141 pottery figurines of significant historical, cultural, and artistic value were unearthed from the tombs. Some of the figurines are currently being stored in warehouses, and the surface of some of the figurines show fungal deterioration. To thoroughly analyze the fungal deterioration on the surface of the pottery figurines and find appropriate control methods, we used high-through sequencing, scanning electron microscopy observation, pure cultures of culturable fungi, and optical microscopy observation and molecular identification of culturable fungi. We conducted fungistatic and simulation experiments in the laboratory to find appropriate control methods. We found that the fungi on the surface of the figurines were mainly of the phylum Ascomycota, and a few fungi were of the phyla Basidiomycota and Mucoromycota. We isolated seven culturable fungal strains and observed their colony morphology. The seven fungal strains were Lecanicillium aphanocladii, Penicillium aurantiogriseum, Clonostachys rosea, Mortierella sp., Mortierella alpina, Aspergillus flavus, and Cladosporium halotolerans. Through the fungistatic and simulation experiments conducted in the laboratory, we found that 50 mg/ml cinnamaldehyde and 0.5% K100 (2-methyl-4-isothiazolin-3-one) have a good fungistatic effect. They can not only inhibit the growth of fungi on medium, but also inhibit the growth of fungi on the surface of pottery figurines. This study has good reference significance for the analysis and control of fungal deterioration of unearthed pottery figurines.
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Affiliation(s)
- Yu Wang
- Ministry of Education Key Laboratory of Molecular Microbiology and Technology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Cen Wang
- Ministry of Education Key Laboratory of Molecular Microbiology and Technology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Xinyu Yang
- Ministry of Education Key Laboratory of Molecular Microbiology and Technology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Kaixuan Ma
- Ministry of Education Key Laboratory of Molecular Microbiology and Technology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Peifeng Guo
- Ministry of Education Key Laboratory of Molecular Microbiology and Technology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Qirui Sun
- Institute of Cultural Relics and Archaeology, Jinan, China
| | - Shili Jia
- Department of Cultural Relics and Museums, College of History and Culture, Qufu Normal University, Qufu, China
| | - Jiao Pan
- Ministry of Education Key Laboratory of Molecular Microbiology and Technology, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
- Institute of Cultural Heritage and History of Science and Technology, University of Science and Technology Beijing, Beijing, China
- *Correspondence: Jiao Pan, ;
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Schug AR, Scholtzek AD, Turnidge J, Meurer M, Schwarz S, Feßler AT. Development of Quality Control Ranges for Biocide Susceptibility Testing. Pathogens 2022; 11:pathogens11020223. [PMID: 35215165 PMCID: PMC8878709 DOI: 10.3390/pathogens11020223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/25/2022] [Accepted: 02/01/2022] [Indexed: 02/01/2023] Open
Abstract
Every laboratory test needs validation by quality controls. For biocide susceptibility testing (BST), neither quality control (QC) strains nor QC ranges applicable to these strains are currently available. As QC strains, four well-defined laboratory reference strains (Staphylococcus aureus ATCC® 6538, Enterococcus hirae ATCC® 10541, Escherichia coli ATCC® 10536 and Pseudomonas aeruginosa ATCC® 15442), which have been used previously for biocide efficacy testing, were selected. In an interlaboratory trial with eleven participating laboratories, BST QC ranges should be developed for the aforementioned four strains and the four biocides benzalkonium chloride, chlorhexidine, octenidine and polyhexanide. The performance of three different lots of tryptic soy broth was explored using the broth microdilution method and the data were subsequently evaluated using the RangeFinder software. As a result, QC ranges were defined for all reference strain–biocide combinations, except for P. aeruginosa ATCC® 15442 with the two biocides chlorhexidine and polyhexanide. The development of the latter two QC ranges was not possible, due to the limited solubility of the biocides in the test range required for P. aeruginosa ATCC® 15442. The newly developed QC ranges comprise three to five dilution steps. The establishment of QC ranges will contribute to the validation of BST in the future.
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Affiliation(s)
- Angela R. Schug
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, Department of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany; (A.R.S.); (A.D.S.); (S.S.)
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
| | - Anissa D. Scholtzek
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, Department of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany; (A.R.S.); (A.D.S.); (S.S.)
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
- Unit Bacterial Toxins, Food Service, Department Biological Safety, German Federal Institute for Risk Assessment, 10589 Berlin, Germany
| | - John Turnidge
- School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Marita Meurer
- Institute for Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Stefan Schwarz
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, Department of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany; (A.R.S.); (A.D.S.); (S.S.)
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
| | - Andrea T. Feßler
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, Department of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany; (A.R.S.); (A.D.S.); (S.S.)
- Veterinary Centre for Resistance Research (TZR), Freie Universität Berlin, 14163 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)-30-838-63074
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15
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Tripathi AK, Thakur P, Saxena P, Rauniyar S, Gopalakrishnan V, Singh RN, Gadhamshetty V, Gnimpieba EZ, Jasthi BK, Sani RK. Gene Sets and Mechanisms of Sulfate-Reducing Bacteria Biofilm Formation and Quorum Sensing With Impact on Corrosion. Front Microbiol 2021; 12:754140. [PMID: 34777309 PMCID: PMC8586430 DOI: 10.3389/fmicb.2021.754140] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/24/2021] [Indexed: 01/02/2023] Open
Abstract
Sulfate-reducing bacteria (SRB) have a unique ability to respire under anaerobic conditions using sulfate as a terminal electron acceptor, reducing it to hydrogen sulfide. SRB thrives in many natural environments (freshwater sediments and salty marshes), deep subsurface environments (oil wells and hydrothermal vents), and processing facilities in an industrial setting. Owing to their ability to alter the physicochemical properties of underlying metals, SRB can induce fouling, corrosion, and pipeline clogging challenges. Indigenous SRB causes oil souring and associated product loss and, subsequently, the abandonment of impacted oil wells. The sessile cells in biofilms are 1,000 times more resistant to biocides and induce 100-fold greater corrosion than their planktonic counterparts. To effectively combat the challenges posed by SRB, it is essential to understand their molecular mechanisms of biofilm formation and corrosion. Here, we examine the critical genes involved in biofilm formation and microbiologically influenced corrosion and categorize them into various functional categories. The current effort also discusses chemical and biological methods for controlling the SRB biofilms. Finally, we highlight the importance of surface engineering approaches for controlling biofilm formation on underlying metal surfaces.
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Affiliation(s)
- Abhilash Kumar Tripathi
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Payal Thakur
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Priya Saxena
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Shailabh Rauniyar
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Vinoj Gopalakrishnan
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Ram Nageena Singh
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Venkataramana Gadhamshetty
- 2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Etienne Z Gnimpieba
- 2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Biomedical Engineering Program, University of South Dakota, Sioux Falls, SD, United States
| | - Bharat K Jasthi
- 2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Department of Materials and Metallurgical Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States
| | - Rajesh Kumar Sani
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States.,2-Dimensional Materials for Biofilm Engineering, Science and Technology, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Data Driven Material Discovery Center for Bioengineering Innovation, South Dakota School of Mines and Technology, Rapid City, SD, United States.,BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, United States.,Composite and Nanocomposite Advanced Manufacturing Centre-Biomaterials, Rapid City, SD, United States
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16
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Exploring the Biodiversity of Red Yeasts for In Vitro and In Vivo Phenotypes Relevant to Agri-Food-Related Processes. FERMENTATION 2020. [DOI: 10.3390/fermentation7010002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Red yeasts grow on food wastes, show antagonistic activity against food-spoilage microorganisms, produce food supplements, and may be utilized as feed-supplements themselves to positively modulate the quali-quantitative composition of intestinal microbiota. Therefore, they show a variety of possible biotechnological applications in agri-food-related processes. Here, to further explore the biotechnological potential of red yeasts, eleven strains ascribed to different species of the genera Rhodotorula and Sporobolomyces, differing for biomass and carotenoids production, were characterized in vitro for biofilm formation, invasive growth, and growth at the temperature range of 20–40 °C and in vivo for their antagonistic activity against the fungal pathogen and patulin producer Penicillium expansum. Most of them formed cellular MAT and showed invasive growth as well as adhesion to plastic materials. Four strains determined a significant reduction of fruit decay caused by P. expansum on apple fruit while the remaining seven showed different degrees of biocontrol activity. Finally, none of them grew at body temperature (>37 °C). Statistical analyses of both qualitative and quantitative phenotypic data, including biomass and carotenoids production, gathered further information on the most interesting strains for the biotechnological exploitation of red yeasts in agri-food-related process.
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Immobilization of alkyl-pterin photosensitizer on silicon surfaces through in situ S N2 reaction as suitable approach for photodynamic inactivation of Staphylococcus aureus. Colloids Surf B Biointerfaces 2020; 198:111456. [PMID: 33246776 DOI: 10.1016/j.colsurfb.2020.111456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/19/2020] [Accepted: 10/30/2020] [Indexed: 12/29/2022]
Abstract
The tuning of surface properties through functionalization is an important field of research with a broad spectrum of applications. Self-assembled monolayers (SAMs) allow the surface tailoring through the adsorption of molecular layers having the appropriate functional group or precursor group enabling in situ chemical reactions and thus to the incorporation of new functionalities. The latter approach is particularly advantageous when the incorporation of huge groups is needed. In this study, we report the immobilization of pterin moieties on 11-bromoundecyltrichlorosilane-modified silicon substrates based on the in situ replacement of the bromine groups by pterin (Ptr), the parent derivative of pterins, by means of a nucleophilic substitution reaction. The modified surface was structurally characterized through a multi-technique approach, including high-resolution XPS analysis, contact angle measurements, and AFM. The designed synthesis method leads to the functionalization of the silicon surface with two compounds, O-undecyl-Ptr and N-undecyl-Ptr, with a higher proportion of the N-derivative (1:8 ratio). The alkyl-pterins immobilized via the proposed strategy, retain their photochemical properties, being able to inhibit Staphylococcus aureus growth under irradiation (84.3 ± 15.6 % reduction in viable cells). Our results open the possibility for the modification of several materials, such as glass and metal, through the formation of SAMs having the proper head group, thus allowing the design of photosensitive surfaces with potential microbiological self-cleaning properties.
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Assessment of acute and repeated pulmonary toxicities of oligo(2-(2-ethoxy)ethoxyethyl guanidium chloride in mice. Toxicol Res 2020; 37:99-113. [PMID: 33489861 DOI: 10.1007/s43188-020-00058-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/16/2020] [Accepted: 07/23/2020] [Indexed: 10/23/2022] Open
Abstract
Oligo(2-(2-ethoxy)ethoxyethyl guanidinium chloride (PGH) and polyhexamethyleneguanidine phosphate (PHMG-P) are cationic biocides containing a guanidine group. Direct exposure of the lungs to PHMG-P is known to induce pulmonary inflammation and fibrotic changes. Few studies have assessed the pulmonary toxicity of PGH, another member of the guanidine family. In this study, we assessed the acute and repeated toxicity of PGH and PHMG-P to compare the pathological progression induced by both chemicals. PGH (1.5 mg/kg) or PHMG (0.6 mg/kg) was instilled intratracheally to mice once or three times every 4 days; subsequently, cytokine levels were quantified and a histopathological examination was performed. To verify the toxic mechanism of PGH, we quantified cell viability and cytokine production induced by PGH or PHMG-P in the presence or absence of anionic material in cells. Instillation of PGH and PHMG-P into the mouse lung increased cytokine production, immune cell infiltration, and pulmonary fibrotic changes. These pathological changes were exacerbated over time in the single- and the repeated-dose PHMG-P groups, but were resolved over time in the PGH groups. PGH or PHMG-P showed cytotoxic effects, IL-1β secretion, and ROS production in a dose-dependent manner in human cell lines. However, the co-treatment of anionic materials with PGH or PHMG-P significantly reduced these toxic responses, which confirmed that the cation of PGH disrupted the plasma membrane via ionic interaction, as observed for PHMG-P. In addition, we suggest the disruption of plasma membrane as a molecular initiating event of cationic chemicals-induced adverse outcomes when exposed directly to the lungs.
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Common Plant-Derived Terpenoids Present Increased Anti-Biofilm Potential against Staphylococcus Bacteria Compared to a Quaternary Ammonium Biocide. Foods 2020; 9:foods9060697. [PMID: 32492772 PMCID: PMC7353659 DOI: 10.3390/foods9060697] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022] Open
Abstract
The antimicrobial actions of three common plant-derived terpenoids (i.e., carvacrol, thymol and eugenol) were compared to those of a typical quaternary ammonium biocide (i.e., benzalkonium chloride; BAC), against both planktonic and biofilm cells of two widespread Staphylococcus species (i.e., S. aureus and S. epidermidis). The minimum inhibitory and bactericidal concentrations (MICs, MBCs) of each compound against the planktonic cells of each species were initially determined, together with their minimum biofilm eradication concentrations (MBECs). Various concentrations of each compound were subsequently applied, for 6 min, against each type of cell, and survivors were enumerated by agar plating to calculate log reductions and determine the resistance coefficients (Rc) for each compound, as anti-biofilm effectiveness indicators. Sessile communities were always more resistant than planktonic ones, depending on the biocide and species. Although lower BAC concentrations were always needed to kill a specified population of either cell type compared to the terpenoids, for the latter, the required increases in their concentrations, to be equally effective against the biofilm cells with respect to the planktonic ones, were not as intense as those observed in the case of BAC, presenting thus significantly lower Rc. This indicates their significant anti-biofilm potential and advocate for their further promising use as anti-biofilm agents.
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Chitosan/Lignosulfonate Nanospheres as "Green" Biocide for Controlling the Microbiologically Influenced Corrosion of Carbon Steel. MATERIALS 2020; 13:ma13112484. [PMID: 32486037 PMCID: PMC7321122 DOI: 10.3390/ma13112484] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 11/23/2022]
Abstract
In this work, uniform cross-linked chitosan/lignosulfonate (CS/LS) nanospheres with an average diameter of 150–200 nm have been successfully used as a novel, environmentally friendly biocide for the inhibition of mixed sulfate-reducing bacteria (SRB) culture, thereby controlling microbiologically influenced corrosion (MIC) on carbon steel. It was found that 500 µg·mL−1 of the CS/LS nanospheres can be used efficiently for the inhibition of SRB-induced corrosion up to a maximum of 85% indicated by a two fold increase of charge transfer resistance (Rct) on the carbon steel coupons. The hydrophilic surface of CS/LS can readily bind to the negatively charged bacterial surfaces and thereby leads to the inactivation or damage of bacterial cells. In addition, the film formation ability of chitosan on the coupon surface may have formed a protective layer to prevent the biofilm formation by hindering the initial bacterial attachment, thus leading to the reduction of corrosion.
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21
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Novel magnetically separable γ-Fe2O3/Ag/AgCl/g-C3N4 composite for enhanced disinfection under visible light. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123981] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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22
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Zara G, Bou Zeidan M, Fancello F, Sanna ML, Mannazzu I, Budroni M, Zara S. The administration of L-cysteine and L-arginine inhibits biofilm formation in wild-type biofilm-forming yeast by modulating FLO11 gene expression. Appl Microbiol Biotechnol 2019; 103:7675-7685. [PMID: 31300852 DOI: 10.1007/s00253-019-09996-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/17/2019] [Accepted: 06/22/2019] [Indexed: 01/25/2023]
Abstract
Microbial biofilms are undesired in food manufacturing, drinking water distribution systems, and clinical realms. Yeast biofilms are particularly problematic because of the strong capacity of yeast cells to adhere to abiotic surfaces, cells, and tissues. Novel approaches have been developed over recent years to prevent the establishment of microbial biofilms, such as through the use of small molecules with inhibiting and dispersing properties. Here, we studied the inhibitory activity of 11 different amino acids on the biofilm formation ability of three wild-type Saccharomyces cerevisiae strains and the reference strain ∑1278b. Subsequent evaluation of different concentrations of the two most effective amino acids, namely, arginine and cysteine, revealed that they acted in different ways. Arginine prevented biofilm formation by reducing FLO11 gene expression; its addition did not affect cell viability and was even found to enhance cell metabolism (vitality marker) as determined by phenotype microarray (PM) analysis. On the contrary, the addition of cysteine reduced both cell viability and vitality as well as FLO11 expression. Thus, the use of cysteine and arginine as agents against biofilm formation can be diversified depending on the most desired action towards yeast growth.
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Affiliation(s)
- Giacomo Zara
- Department of Agricultural Sciences, University of Sassari, Sassari, Italy.
| | - Marc Bou Zeidan
- Department of Agri-Food Sciences, Holy Spirit University of Kaslik, Jounieh, Lebanon
| | - Francesco Fancello
- Department of Agricultural Sciences, University of Sassari, Sassari, Italy
| | - Maria Lina Sanna
- Department of Agricultural Sciences, University of Sassari, Sassari, Italy
| | - Ilaria Mannazzu
- Department of Agricultural Sciences, University of Sassari, Sassari, Italy
| | - Marilena Budroni
- Department of Agricultural Sciences, University of Sassari, Sassari, Italy
| | - Severino Zara
- Department of Agricultural Sciences, University of Sassari, Sassari, Italy.
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23
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Melian C, Segli F, Gonzalez R, Vignolo G, Castellano P. Lactocin AL705 as quorum sensing inhibitor to control
Listeria monocytogenes
biofilm formation. J Appl Microbiol 2019; 127:911-920. [DOI: 10.1111/jam.14348] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/20/2019] [Accepted: 06/04/2019] [Indexed: 12/25/2022]
Affiliation(s)
- C. Melian
- Centro de Referencia para Lactobacilos (CERELA) Tucumán Argentina
| | - F. Segli
- Centro de Referencia para Lactobacilos (CERELA) Tucumán Argentina
| | - R. Gonzalez
- Instituto de Nanobiotecnología, Facultad de Farmacia y Bioquímica Universidad de Buenos Aires Buenos Aires Argentina
| | - G. Vignolo
- Centro de Referencia para Lactobacilos (CERELA) Tucumán Argentina
| | - P. Castellano
- Centro de Referencia para Lactobacilos (CERELA) Tucumán Argentina
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24
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Özcan SS, Dieser M, Parker AE, Balasubramanian N, Foreman CM. Quorum sensing inhibition as a promising method to control biofilm growth in metalworking fluids. J Ind Microbiol Biotechnol 2019; 46:1103-1111. [PMID: 31020467 DOI: 10.1007/s10295-019-02181-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 04/10/2019] [Indexed: 11/24/2022]
Abstract
Microbial contamination in metalworking systems is a critical problem. This study determined the microbial communities in metalworking fluids (MWFs) from two machining shops and investigated the effect of quorum sensing inhibition (QSI) on biofilm growth. In both operations, biofilm-associated and planktonic microbial communities were dominated by Pseudomonadales (60.2-99.7%). Rapid recolonization was observed even after dumping spent MWFs and meticulous cleaning. Using Pseudomonas aeruginosa PAO1 as a model biofilm organism, patulin (40 µM) and furanone C-30 (75 µM) were identified as effective QSI agents. Both agents had a substantially higher efficacy compared to α-amylase (extracellular polymeric substance degrading enzyme) and reduced biofilm formation by 63% and 76%, respectively, in MWF when compared to untreated controls. Reduced production of putatively identified homoserine lactones and quinoline in MWF treated with QS inhibitors support the effect of QSI on biofilm formation. The results highlight the effectiveness of QSI as a potential strategy to eradicate biofilms in MWFs.
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Affiliation(s)
- Safiye Selen Özcan
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, 59715, USA.,Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, 59717, USA
| | - Markus Dieser
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, 59715, USA.,Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, 59717, USA
| | - Albert E Parker
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, 59717, USA.,Department of Mathematical Sciences, Montana State University, Bozeman, MT, 59717, USA
| | | | - Christine M Foreman
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, 59715, USA. .,Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, 59717, USA.
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25
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Ramos M, Burgos N, Barnard A, Evans G, Preece J, Graz M, Ruthes AC, Jiménez-Quero A, Martínez-Abad A, Vilaplana F, Ngoc LP, Brouwer A, van der Burg B, Del Carmen Garrigós M, Jiménez A. Agaricus bisporus and its by-products as a source of valuable extracts and bioactive compounds. Food Chem 2019; 292:176-187. [PMID: 31054663 DOI: 10.1016/j.foodchem.2019.04.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 04/07/2019] [Accepted: 04/08/2019] [Indexed: 01/28/2023]
Abstract
Edible mushrooms constitute an appreciated nutritional source for humans due to their low caloric intake and their high content in carbohydrates, proteins, dietary fibre, phenolic compounds, polyunsaturated fatty acids, vitamins and minerals. It has been also demonstrated that mushrooms have health-promoting benefits. Cultivation of mushrooms, especially of the most common species Agaricus bisporus, represents an increasingly important food industry in Europe, but with a direct consequence in the increasing amount of by-products from their industrial production. This review focuses on collecting and critically investigating the current data on the bioactive properties of Agaricus bisporus as well as the recent research for the extraction of valuable functional molecules from this species and its by-products obtained after industrial processing. The state of the art regarding the antimicrobial, antioxidant, anti-allergenic and dietary compounds will be discussed for novel applications such as nutraceuticals, additives for food or cleaning products.
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Affiliation(s)
- Marina Ramos
- University of Alicante, Department of Analytical Chemistry, Nutrition & Food Sciences, ES-03690, San Vicente del Raspeig, Alicante, Spain
| | - Nuria Burgos
- University of Alicante, Department of Analytical Chemistry, Nutrition & Food Sciences, ES-03690, San Vicente del Raspeig, Alicante, Spain
| | - Almero Barnard
- Neem Biotech Ltd. Units G&H, Abertillery NP13 1SX, United Kingdom
| | - Gareth Evans
- Neem Biotech Ltd. Units G&H, Abertillery NP13 1SX, United Kingdom
| | - James Preece
- Neem Biotech Ltd. Units G&H, Abertillery NP13 1SX, United Kingdom
| | - Michael Graz
- Neem Biotech Ltd. Units G&H, Abertillery NP13 1SX, United Kingdom
| | - Andrea Caroline Ruthes
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Amparo Jiménez-Quero
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Antonio Martínez-Abad
- University of Alicante, Department of Analytical Chemistry, Nutrition & Food Sciences, ES-03690, San Vicente del Raspeig, Alicante, Spain; Neem Biotech Ltd. Units G&H, Abertillery NP13 1SX, United Kingdom
| | - Francisco Vilaplana
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Long Pham Ngoc
- BioDetection Systems b.v, Science Park, 406, 1098 XH Amsterdam, The Netherlands
| | - Abraham Brouwer
- BioDetection Systems b.v, Science Park, 406, 1098 XH Amsterdam, The Netherlands
| | - Bart van der Burg
- BioDetection Systems b.v, Science Park, 406, 1098 XH Amsterdam, The Netherlands
| | - María Del Carmen Garrigós
- University of Alicante, Department of Analytical Chemistry, Nutrition & Food Sciences, ES-03690, San Vicente del Raspeig, Alicante, Spain
| | - Alfonso Jiménez
- University of Alicante, Department of Analytical Chemistry, Nutrition & Food Sciences, ES-03690, San Vicente del Raspeig, Alicante, Spain.
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26
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Overview Perspective of Bacterial Strategies of Resistance to Biocides and Antibiotics. ARCHIVES OF CLINICAL INFECTIOUS DISEASES 2019. [DOI: 10.5812/archcid.65744] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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27
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Yi J, Zhang Y, Lin W, Niu B, Chen Q. Effect of polyhexamethylene biguanide functionalized silver nanoparticles on the growth of Staphylococcus aureus. FEMS Microbiol Lett 2019; 366:5342065. [PMID: 30879081 DOI: 10.1093/femsle/fnz036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 02/18/2019] [Indexed: 12/28/2022] Open
Abstract
Polyhexamethylene biguanide (PHMB) was used as a stabilizing ligand to synthesize uniform silver nanoparticles (Ag NPs). The effects and action mechanism of PHMB functionalized Ag NPs (Ag NPs-PHMB) on the growth of the Gram-positive bacteria Staphylococcus aureus were investigated. The results showed that a high concentration Ag NPs-PHMB could be obtained and prepared particles were fairly uniform. Prepared Ag NPs-PHMB enhanced the bactericidal effect and the log kill reached 5.06 when S. aureus was exposed to Ag NPs-PHMB for 20 min. Ag NPs-PHMB caused damage to cell wall, a decrease in the membrane fluidity, and leakage of K+, Mg2+, ATP and proteins from the cell, eventually leading to the death of S. aureus.
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Affiliation(s)
- Jialin Yi
- School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Yuelin Zhang
- School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Wenshu Lin
- School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Bing Niu
- School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Qin Chen
- School of Life Sciences, Shanghai University, Shanghai 200444, PR China
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28
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Fortunati E, Mazzaglia A, Balestra GM. Sustainable control strategies for plant protection and food packaging sectors by natural substances and novel nanotechnological approaches. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:986-1000. [PMID: 30191564 DOI: 10.1002/jsfa.9341] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/14/2018] [Accepted: 08/26/2018] [Indexed: 06/08/2023]
Abstract
An overview is provided of the current technological strategies (also at the nanoscale level) recently involved in plant and/or food protection. In addition, the potential use of natural and sustainable substances, instead of traditional synthesized molecules or chemical-based compounds, is addressed both with respect to packaging systems and novel pesticide formulations. In this context, nanotechnological approaches represent promising strategies for the entire agriculture industry chain, from the field to consumers. Traditional plant protection strategies are often insufficient and the application of chemical-based pesticides has negative effects on animals, humans and the environment. Novel greener tools could represent efficient alternatives for the management of plant diseases using promising strategies; the use of nanotechnologies allows the promotion of the more efficient assembly and subsequent release of environmentally sustainable active principles, limiting the use of chemicals in terms of economic losses. At the same time, new sustainable, antimicrobial and antioxidant systems have been rapidly promoted and investigated in the food packaging sector as a valid eco-friendly possibility for improving the safety and quality of food products and reducing and/or limiting the environmental impact with respect to traditional materials. Together, the scientific community and the growing interest of consumers have promoted the development of new edible and eco-friendly packaging that reduces waste and any environmental impact. In this context, the aim is to provide evidence of the usefulness of strategies aiming to limit agrochemicals, as well as the potential of nanomaterials, in sustainable plant and food protection for agriculture management and the packaging sector. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Elena Fortunati
- Department of Agricultural and Forestry Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Angelo Mazzaglia
- Department of Agricultural and Forestry Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Giorgio M Balestra
- Department of Agricultural and Forestry Science (DAFNE), University of Tuscia, Viterbo, Italy
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29
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Alvarez-Ordóñez A, Coughlan LM, Briandet R, Cotter PD. Biofilms in Food Processing Environments: Challenges and Opportunities. Annu Rev Food Sci Technol 2019; 10:173-195. [PMID: 30653351 DOI: 10.1146/annurev-food-032818-121805] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review examines the impact of microbial communities colonizing food processing environments in the form of biofilms on food safety and food quality. The focus is both on biofilms formed by pathogenic and spoilage microorganisms and on those formed by harmless or beneficial microbes, which are of particular relevance in the processing of fermented foods. Information is presented on intraspecies variability in biofilm formation, interspecies relationships of cooperativism or competition within biofilms, the factors influencing biofilm ecology and architecture, and how these factors may influence removal. The effect on the biofilm formation ability of particular food components and different environmental conditions that commonly prevail during food processing is discussed. Available tools for the in situ monitoring and characterization of wild microbial biofilms in food processing facilities are explored. Finally, research on novel agents or strategies for the control of biofilm formation or removal is summarized.
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Affiliation(s)
- Avelino Alvarez-Ordóñez
- Department of Food Hygiene and Technology and Institute of Food Science and Technology, Universidad de León, 24071 León, Spain;
| | - Laura M Coughlan
- Teagasc Food Research Centre, Moorepark, Fermoy, County Cork, Ireland.,School of Microbiology, University College Cork, County Cork, Ireland
| | - Romain Briandet
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, 78350 France
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, County Cork, Ireland.,APC Microbiome Ireland, Cork, County Cork, Ireland
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30
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Batista WR, Fernandes FC, Neves MHCB, Nascimento TS, Lopes RSC, Lopes CC, Ziegler GP, Soler-Figueroa BM, Sparks D, Fontaine DN, Carney KJ, Quiñones-Oquendo LE, Ruiz GM. Synthetic lipids as a biocide candidate for disinfection of ballast water. MARINE POLLUTION BULLETIN 2018; 137:702-710. [PMID: 30503487 DOI: 10.1016/j.marpolbul.2018.11.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
The objective of this study is to propose the use of specific synthetic lipid as an active substance (biocide) in the control of harmful aquatic microorganisms, such as pathogens and non-indigenous species, transported in ships' ballast water. The biocide candidate, without metal or halogen components, was produced from a sub-product of the edible oil industry, the lecithin. Laboratory assays were conducted with phytoplankton, zooplankton, and marine bacteria to evaluate the efficiency of the biocide. The study also considers specific biocide's characteristics related to environmental risks, such as chemical composition, persistence, bioaccumulation, and toxicity. Results showed that, in the first 24 h of treatment, the biocide effectively reduced the concentration of the planktonic micro-organisms to very low levels. Additionally, a preliminary risk evaluation pointed that biocide candidate has a low residual toxicity, also a low potential for persistence and bioaccumulation in the environment.
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Affiliation(s)
- William R Batista
- Instituto de Estudos do Mar Almirante Paulo Moreira, Marinha do Brasil, Rua Kioto 253, Praia dos Anjos, Arraial do Cabo, RJ 28930-000, Brazil.
| | - Flavio C Fernandes
- Instituto de Estudos do Mar Almirante Paulo Moreira, Marinha do Brasil, Rua Kioto 253, Praia dos Anjos, Arraial do Cabo, RJ 28930-000, Brazil
| | - Maria H C B Neves
- Instituto de Estudos do Mar Almirante Paulo Moreira, Marinha do Brasil, Rua Kioto 253, Praia dos Anjos, Arraial do Cabo, RJ 28930-000, Brazil
| | - Thiana S Nascimento
- Laboratório de Síntese e Análise de Produtos Estratégicos, Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Bloco A, s.508, Cidade Universitária, RJ 21941-909, Brazil
| | - Rosangela S C Lopes
- Laboratório de Síntese e Análise de Produtos Estratégicos, Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Bloco A, s.508, Cidade Universitária, RJ 21941-909, Brazil
| | - Claudio C Lopes
- Laboratório de Síntese e Análise de Produtos Estratégicos, Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Bloco A, s.508, Cidade Universitária, RJ 21941-909, Brazil
| | - Gregory P Ziegler
- Wye Research and Education Center, University of Maryland, 124 Wye Narrows Drive, Queenstown, MD 21658-0169, USA
| | - Brenda M Soler-Figueroa
- Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA
| | - Darrick Sparks
- Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA
| | - Diana N Fontaine
- Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA
| | - Katharine J Carney
- Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA
| | - Luz E Quiñones-Oquendo
- Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA
| | - Gregory M Ruiz
- Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA
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31
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Kim DY, Kadam A, Shinde S, Saratale RG, Patra J, Ghodake G. Recent developments in nanotechnology transforming the agricultural sector: a transition replete with opportunities. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:849-864. [PMID: 29065236 DOI: 10.1002/jsfa.8749] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/12/2017] [Accepted: 10/16/2017] [Indexed: 05/23/2023]
Abstract
The applications and benefits of nanotechnology in the agricultural sector have attracted considerable attention, particularly in the invention of unique nanopesticides and nanofertilisers. The contemporary developments in nanotechnology are acknowledged and the most significant opportunities awaiting the agriculture sector from the recent scientific and technical literature are addressed. This review discusses the significance of recent trends in nanomaterial-based sensors available for the sustainable management of agricultural soil, as well as the role of nanotechnology in detection and protection against plant pathogens, and for food quality and safety. Novel nanosensors have been reported for primary applications in improving crop practices, food quality, and packaging methods, thus will change the agricultural sector for potentially better and healthier food products. Nanotechnology is well-known to play a significant role in the effective management of phytopathogens, nutrient utilisation, controlled release of pesticides, and fertilisers. Research and scientific gaps to be overcome and fundamental questions have been addressed to fuel active development and application of nanotechnology. Together, nanoscience, nanoengineering, and nanotechnology offer a plethora of opportunities, proving a viable alternative in the agriculture and food processing sector, by providing a novel and advanced solutions. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Dae-Young Kim
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
| | - Avinash Kadam
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
| | - Surendra Shinde
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
| | - Rijuta Ganesh Saratale
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
| | - Jayanta Patra
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
| | - Gajanan Ghodake
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
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32
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Ivanova EP, Nguyen SH, Guo Y, Baulin VA, Webb HK, Truong VK, Wandiyanto JV, Garvey CJ, Mahon PJ, Mainwaring DE, Crawford RJ. Bactericidal activity of self-assembled palmitic and stearic fatty acid crystals on highly ordered pyrolytic graphite. Acta Biomater 2017; 59:148-157. [PMID: 28688988 DOI: 10.1016/j.actbio.2017.07.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/03/2017] [Accepted: 07/03/2017] [Indexed: 11/27/2022]
Abstract
The wings of insects such as cicadas and dragonflies have been found to possess nanostructure arrays that are assembled from fatty acids. These arrays can physically interact with the bacterial cell membranes, leading to the death of the cell. Such mechanobactericidal surfaces are of significant interest, as they can kill bacteria without the need for antibacterial chemicals. Here, we report on the bactericidal effect of two of the main lipid components of the insect wing epicuticle, palmitic (C16) and stearic (C18) fatty acids. Films of these fatty acids were re-crystallised on the surface of highly ordered pyrolytic graphite. It appeared that the presence of two additional CH2 groups in the alkyl chain resulted in the formation of different surface structures. Scanning electron microscopy and atomic force microscopy showed that the palmitic acid microcrystallites were more asymmetric than those of the stearic acid, where the palmitic acid microcrystallites were observed to be an angular abutment in the scanning electron micrographs. The principal differences between the two types of long-chain saturated fatty acid crystallites were the larger density of peaks in the upper contact plane of the palmitic acid crystallites, as well as their greater proportion of asymmetrical shapes, in comparison to that of the stearic acid film. These two parameters might contribute to higher bactericidal activity on surfaces derived from palmitic acid. Both the palmitic and stearic acid crystallite surfaces displayed activity against Gram-negative, rod-shaped Pseudomonas aeruginosa and Gram-positive, spherical Staphylococcus aureus cells. These microcrystallite interfaces might be a useful tool in the fabrication of effective bactericidal nanocoatings. STATEMENT OF SIGNIFICANCE Nanostructured cicada and dragonfly wing surfaces have been discovered to be able physically kill bacterial cells. Here, we report on the successful fabrication of bactericidal three-dimensional structures of two main lipid components of the epicuticle of insect wings, palmitic (C16) and stearic (C18) acids. After crystallisation onto highly ordered pyrolytic graphite, both the palmitic and stearic acid films displayed bactericidal activity against both Gram-negative Pseudomonas aeruginosa and Gram-positive Staphylococcus aureus cells. The simplicity of the production of these microcrystallite interfaces suggests that a fabrication technique, based on solution deposition, could be an effective technique for the application of bactericidal nanocoatings.
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33
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Cai W, Wang J, Quan X, Wang Z. Preparation of bromo-substituted polyaniline with excellent antibacterial activity. J Appl Polym Sci 2017. [DOI: 10.1002/app.45657] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Wei Cai
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering; Tianjin University; Tianjin 300072 China
| | - Jixiao Wang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering; Tianjin University; Tianjin 300072 China
| | - Xiaodong Quan
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering; Tianjin University; Tianjin 300072 China
| | - Zhi Wang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering; Tianjin University; Tianjin 300072 China
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34
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Which Ballast Water Management System Will You Put Aboard? Remnant Anxieties: A Mini-Review. ENVIRONMENTS 2017. [DOI: 10.3390/environments4030054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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35
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Mombeshora M, Mukanganyama S. Development of an accumulation assay and evaluation of the effects of efflux pump inhibitors on the retention of chlorhexidine digluconate in Pseudomonas aeruginosa and Staphylococcus aureus. BMC Res Notes 2017; 10:328. [PMID: 28747232 PMCID: PMC5530522 DOI: 10.1186/s13104-017-2637-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 07/21/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chlorhexidine digluconate (CHG) is used as a disinfectant. The emergence of pathogens resistant to the biocide raises health concern. Information on specific efflux mechanisms utilised by bacteria to confer reduced susceptibility to the biocide, may be used to develop ways of preventing the efflux of the biocide from nosocomial pathogens resulting in higher disinfection activity. The aim of the study was to evaluate the role of ATP-binding cassette transporters on the transport of CHG in bacteria. METHODS Clinical strains of Pseudomonas aeruginosa, Staphylococcus aureus and their respective laboratory strains ATCC 27853 and ATCC 9144 were used for susceptibility tests. The minimum inhibitory concentration (MIC) of CHG with or without an efflux pump inhibitor [reserpine or carbonyl cyanide m-chlorophenylhydrazone (CCCP)] was determined using the broth microdilution method. A spectrophotometric method to quantify the amount of chlorhexidine in a sample was developed, validated and used to quantify CHG within P. aeruginosa and S. aureus cells. RESULTS In the presence of reserpine, the MIC of CHG against the clinical strains of P. aeruginosa and S. aureus decreased from 6.3 to 3.2 µg/ml but showed no change against both ATCC isolates. The MIC of CHG in the presence of CCCP for both strains of P. aeruginosa remained unchanged but showed a reduction for both isolates of S. aureus. The suitability of the spectrophotometric method developed for quantifying the amount of CHG accumulated in microbial cells was validated and used successfully to quantify CHG accumulated within bacterial cells. CONCLUSION The spectrophotometric determination of CHG within microbial cells may be used to quantify CHG in microbial cells. Only the clinical strain of P. aeruginosa showed significant efflux of CHG suggesting the participation of efflux transporters in the pumping out of CHG from this isolate. The use of efflux pump inhibitors together with the biocide may be explored to preventing the efflux of the biocide from P. aeruginosa resulting in order to increase disinfection activity.
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Affiliation(s)
- Molly Mombeshora
- Biomolecular Interactions Analyses Group, Department of Biochemistry, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe
| | - Stanley Mukanganyama
- Biomolecular Interactions Analyses Group, Department of Biochemistry, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe.
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Pérez-Ibarreche M, Mendoza LM, Vignolo G, Fadda S. Proteomic and genetics insights on the response of the bacteriocinogenic Lactobacillus sakei CRL1862 during biofilm formation on stainless steel surface at 10°C. Int J Food Microbiol 2017; 258:18-27. [PMID: 28738195 DOI: 10.1016/j.ijfoodmicro.2017.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 06/07/2017] [Accepted: 07/02/2017] [Indexed: 11/16/2022]
Abstract
Some lactic acid bacteria have the ability to form biofilms on food-industry surfaces and this property could be used to control food pathogens colonization. Lactobacillus sakei CR1862 was selected considering its bacteriocinogenic nature and ability to adhere to abiotic surfaces at low temperatures. In this study, the proteome of L. sakei CRL1862 grown either under biofilm on stainless steel surface and planktonic modes of growth at 10°C, was investigated. Using two-dimensional gel electrophoresis, 29 out of 43 statistically significant spots were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Ten proteins resulted up-regulated whereas 16 were down-regulated during biofilm formation. Differentially expressed proteins were found to belong to carbohydrate, nucleotide, aminoacid and lipid metabolisms as well as translation, peptide hydrolysis, cell envelope/cell wall biosynthesis, adaption to atypical conditions and protein secretion. Some proteins related to carbohydrate and nucleotide metabolisms, translation and peptide degradation were overexpressed whereas those associated to stress conditions were synthesized in lower amounts. It seems that conditions for biofilm development would not imply a stressful environment for L. sakei CRL1862 cells, directing its growth strategy towards glycolytic flux regulation and reinforcing protein synthesis. In addition, L. sakei CRL1862 showed to harbor nine out of ten assayed genes involved in biofilm formation and protein anchoring. By applying qRT-PCR analysis, four of these genes showed to be up regulated, srtA2 being the most remarkable. The results of this study contribute to the knowledge of the physiology of L. sakei CRL1862 growing in biofilm on a characteristic food contact surface. The use of this strain as green biocide preventing L. monocytogenes post-processing contamination on industrial surfaces may be considered.
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Affiliation(s)
- Mariana Pérez-Ibarreche
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Chacabuco 145, T4000ILC Tucumán, Argentina
| | - Lucía M Mendoza
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Chacabuco 145, T4000ILC Tucumán, Argentina
| | - Graciela Vignolo
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Chacabuco 145, T4000ILC Tucumán, Argentina
| | - Silvina Fadda
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Chacabuco 145, T4000ILC Tucumán, Argentina.
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Lou Y, Shi J, Guo D, Qureshi AK, Song L. Function of PD-L1 in antitumor immunity of glioma cells. Saudi J Biol Sci 2017; 24:803-807. [PMID: 28490949 PMCID: PMC5415119 DOI: 10.1016/j.sjbs.2015.06.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 06/20/2015] [Accepted: 06/22/2015] [Indexed: 12/31/2022] Open
Abstract
Human glioma is a highly fatal tumor with a significant feature of immune suppression. The functions of PD-L1 refer to co-simulation and immune regulation. To investigate expression and functional activity of PD-L1 in human glioma cell in vivo and in vitro. Expressions of PD-L1mRNA and protein in the human glioma cell line were analyzed with quantitative RT-PCR and flow cytometer; and then expression of PD-L1 in tissue specimens of 10 glioma patients was treated with immunohistochemical analysis; glioma cell and allogeneic CD4+ and CD8+ T cells were co-cultured, and cytokine IFN-γ, IL-2 and IL-10 in cultured supernatant fluid were determined with ELISA; upon blocking the interaction between glioma cell and the immune cell with PD-L1 monoclonal antibody (5H1), surface markers on immune cells were analyzed using flow cytometer. All human glioma cell lines constitutively expressed PD-L1, and IFN-γ induced glioma cell to highly express PD-L1. It was shown through immunohistochemical analysis that glioma specimen expressed PD-L1, while expression of PD-L1 was not observed in normal tissue and normal human brain near the tumor location. The release of IFN-γ and IL-2 was inhibited, while IL-10 was increased slightly. Glioma cell may escape from immune recognition and injury with the help of PD-L1, which is a significant pathogenic mechanism of glioma.
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Affiliation(s)
- Yongli Lou
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Zhengzhou Central Hospital, Zhengzhou, Henan, China
| | - Jin Shi
- Nanyang Central Hospital, Henan, China
| | - Dewei Guo
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ahmad Kaleem Qureshi
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Laijun Song
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Advances in the treatment of problematic industrial biofilms. World J Microbiol Biotechnol 2017; 33:97. [PMID: 28409363 DOI: 10.1007/s11274-016-2203-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/28/2016] [Indexed: 02/02/2023]
Abstract
In nature, microorganisms tend to form biofilms that consist of extracellular polymeric substances with embedded sessile cells. Biofilms, especially mixed-culture synergistic biofilm consortia, are notoriously difficult to treat. They employ various defense mechanisms against attacks from antimicrobial agents. Problematic industrial biofilms cause biofouling as well as biocorrosion, also known as microbiologically influenced corrosion. Biocides are often used to treat biofilms together with scrubbing or pigging. Unfortunately, chemical treatments suppress vulnerable microbial species while allowing resistant species to take over. Repeated treatment cycles are typically needed in biofilm mitigation. This leads to biocide dosage escalation, causing environmental problems, higher costs and sometimes operational problems such as scale formation. New treatment methods are being developed such as enhanced biocide treatment and bacteriophage treatment. Special materials such as antibacterial stainless steels are also being created to combat biofilms. This review discussed some of the advances made in the fight against problematic industrial biofilms.
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Lin W, Guan X, Cao J, Niu B, Chen Q. Bactericidal mechanism of glutaraldehyde-didecyldimethylammonium bromide as a disinfectant againstEscherichia coli. J Appl Microbiol 2017; 122:676-685. [DOI: 10.1111/jam.13384] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/05/2016] [Accepted: 12/09/2016] [Indexed: 11/29/2022]
Affiliation(s)
- W. Lin
- Shanghai Key Laboratory of Bio-Energy Crops; School of Life Sciences, Shanghai University; Shanghai China
| | - X. Guan
- Shanghai Key Laboratory of Bio-Energy Crops; School of Life Sciences, Shanghai University; Shanghai China
| | - J. Cao
- Shanghai Key Laboratory of Bio-Energy Crops; School of Life Sciences, Shanghai University; Shanghai China
| | - B. Niu
- Shanghai Key Laboratory of Bio-Energy Crops; School of Life Sciences, Shanghai University; Shanghai China
| | - Q. Chen
- Shanghai Key Laboratory of Bio-Energy Crops; School of Life Sciences, Shanghai University; Shanghai China
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Trošt K, Klančnik A, Mozetič Vodopivec B, Sternad Lemut M, Jug Novšak K, Raspor P, Smole Možina S. Polyphenol, antioxidant and antimicrobial potential of six different white and red wine grape processing leftovers. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:4809-4820. [PMID: 27485794 DOI: 10.1002/jsfa.7981] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 07/15/2016] [Accepted: 07/28/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND During winemaking, grape polyphenols are only partly extracted, and consequently unexploited. The main aim was to characterize the phenolic content of freeze-dried grape skin and seed (FDSS) extracts obtained from Slovenian and international grape varieties and to evaluate their antioxidant, antimicrobial and anti-adhesive activities. RESULTS FDSS of six Vitis vinifera L. grapevine cultivars from Vipava Valley region (Slovenia) underwent extraction and sonification under different conditions. Flavonols were the predominant content of extracts from white 'Zelen' and 'Sauvignon Blanc' grape varieties, with strong antimicrobial activities against Gram-negative bacteria. 'Pinot Noir' FDSS extracted with 50% aqueous ethanol extraction produced a high phenolic content in the final extract, which was further associated with strong antioxidant and antimicrobial activities against all tested bacteria. Bacterial adhesion to stainless steel surfaces with minimal and maximal surface roughness was significantly inhibited (up to 60%) across a wide FDSS concentration range, with lower concentrations also effective with two types of stainless steel surfaces. CONCLUSION FDSS extracts from winery by-products show interesting phenolic profiles that include flavonols, catechins, anthocyanins and hydroxycinnamic acids, with yields influenced by grapevine cultivar and extraction conditions. The antioxidant, antimicrobial and anti-adhesive activities of 50% aqueous ethanol 'Pinot Noir' FDSS extract reveals potential applications in food, pharmaceutical and cosmetic industries for these bioactive residues. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Kajetan Trošt
- Wine Research Centre, University of Nova Gorica, Vipava, Slovenia
| | - Anja Klančnik
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | | | | | - Katja Jug Novšak
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Peter Raspor
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Sonja Smole Možina
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia.
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Xu G, Pranantyo D, Xu L, Neoh KG, Kang ET, Teo SLM. Antifouling, Antimicrobial, and Antibiocorrosion Multilayer Coatings Assembled by Layer-by-layer Deposition Involving Host–Guest Interaction. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02190] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gang Xu
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Dicky Pranantyo
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Liqun Xu
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Koon-Gee Neoh
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - En-Tang Kang
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Serena Lay-Ming Teo
- Tropical Marine Science Institute, National University of Singapore, Kent Ridge, Singapore 119223
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Abousaeidi M, Fauzi R, Muhamad R. Geographic Information System (GIS) modeling approach to determine the fastest delivery routes. Saudi J Biol Sci 2016; 23:555-64. [PMID: 27579003 PMCID: PMC4992097 DOI: 10.1016/j.sjbs.2015.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/31/2015] [Accepted: 06/03/2015] [Indexed: 11/29/2022] Open
Abstract
This study involves the adoption of the Geographic Information System (GIS) modeling approach to determine the quickest routes for fresh vegetable delivery. During transport, fresh vegetables mainly deteriorate on account of temperature and delivery time. Nonetheless, little attention has been directed to transportation issues in most areas within Kuala Lumpur. In addition, perishable food normally has a short shelf life, thus timely delivery significantly affects delivery costs. Therefore, selecting efficient routes would consequently reduce the total transportation costs. The regression model is applied in this study to determine the parameters that affect route selection with respect to the fastest delivery of fresh vegetables. For the purpose of this research, ArcGIS software with network analyst extension is adopted to solve the problem of complex networks. The final output of this research is a map of quickest routes with the best delivery times based on all variables. The variables tested from regression analysis are the most effective parameters to make the flow of road networks slower. The objective is to improve the delivery services by achieving the least drive time. The main findings of this research are that Land use such as residential area and population as variables are the effective parameters on drive time.
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Affiliation(s)
- Mohammad Abousaeidi
- Department of Geography, Institute of Graduate Studies (IPS), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rosmadi Fauzi
- Department of Geography, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rusnah Muhamad
- Department of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Peng W, Lin Z, Wang L, Chang J, Gu F, Zhu X. Molecular characteristics of Illicium verum extractives to activate acquired immune response. Saudi J Biol Sci 2016; 23:348-52. [PMID: 27081359 PMCID: PMC4818329 DOI: 10.1016/j.sjbs.2015.10.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 10/28/2015] [Accepted: 10/29/2015] [Indexed: 11/03/2022] Open
Abstract
Illicium verum, whose extractives can activate the demic acquired immune response, is an expensive medicinal plant. However, the rich extractives in I. verum biomass were seriously wasted for the inefficient extraction and separation processes. In order to further utilize the biomedical resources for the good acquired immune response, the four extractives were obtained by SJYB extraction, and then the immunology moleculars of SJYB extractives were identified and analyzed by GC-MS. The result showed that the first-stage extractives contained 108 components including anethole (40.27%), 4-methoxy-benzaldehyde (4.25%), etc.; the second-stage extractives had 5 components including anethole (84.82%), 2-hydroxy-2-(4-methoxy-phenyl)-n-methyl-acetamide (7.11%), etc.; the third-stage extractives contained one component namely anethole (100%); and the fourth-stage extractives contained 5 components including cyclohexyl-benzene (64.64%), 1-(1-methylethenyl)-3-(1-methylethyl)-benzene (17.17%), etc. The SJYB extractives of I. verum biomass had a main retention time between 10 and 20 min what's more, the SJYB extractives contained many biomedical moleculars, such as anethole, eucalyptol, [1S-(1α,4aα,10aβ)]-1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-1-phenanthrenecarboxylic acid, stigmast-4-en-3-one, γ-sitosterol, and so on. So the functional analytical results suggested that the SJYB extractives of I. verum had a function in activating the acquired immune response and a huge potential in biomedicine.
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Affiliation(s)
- Wanxi Peng
- School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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Legras JL, Moreno-Garcia J, Zara S, Zara G, Garcia-Martinez T, Mauricio JC, Mannazzu I, Coi AL, Bou Zeidan M, Dequin S, Moreno J, Budroni M. Flor Yeast: New Perspectives Beyond Wine Aging. Front Microbiol 2016; 7:503. [PMID: 27148192 PMCID: PMC4830823 DOI: 10.3389/fmicb.2016.00503] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 03/29/2016] [Indexed: 11/24/2022] Open
Abstract
The most important dogma in white-wine production is the preservation of the wine aroma and the limitation of the oxidative action of oxygen. In contrast, the aging of Sherry and Sherry-like wines is an aerobic process that depends on the oxidative activity of flor strains of Saccharomyces cerevisiae. Under depletion of nitrogen and fermentable carbon sources, these yeast produce aggregates of floating cells and form an air–liquid biofilm on the wine surface, which is also known as velum or flor. This behavior is due to genetic and metabolic peculiarities that differentiate flor yeast from other wine yeast. This review will focus first on the most updated data obtained through the analysis of flor yeast with -omic tools. Comparative genomics, proteomics, and metabolomics of flor and wine yeast strains are shedding new light on several features of these special yeast, and in particular, they have revealed the extent of proteome remodeling imposed by the biofilm life-style. Finally, new insights in terms of promotion and inhibition of biofilm formation through small molecules, amino acids, and di/tri-peptides, and novel possibilities for the exploitation of biofilm immobilization within a fungal hyphae framework, will be discussed.
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Affiliation(s)
- Jean-Luc Legras
- SPO, Institut National de la Recherche Agronomique - SupAgro, Université de Montpellier Montpellier, France
| | - Jaime Moreno-Garcia
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba Cordoba, Spain
| | - Severino Zara
- Department of Agricultural Sciences, University of Sassari Sassari, Italy
| | - Giacomo Zara
- Department of Agricultural Sciences, University of Sassari Sassari, Italy
| | - Teresa Garcia-Martinez
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba Cordoba, Spain
| | - Juan C Mauricio
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba Cordoba, Spain
| | - Ilaria Mannazzu
- Department of Agricultural Sciences, University of Sassari Sassari, Italy
| | - Anna L Coi
- Department of Agricultural Sciences, University of Sassari Sassari, Italy
| | - Marc Bou Zeidan
- Department of Agri-Food Sciences, Holy Spirit University of Kaslik Jounieh, Lebanon
| | - Sylvie Dequin
- SPO, Institut National de la Recherche Agronomique - SupAgro, Université de Montpellier Montpellier, France
| | - Juan Moreno
- Department of Agricultural Chemistry, Agrifood Campus of International Excellence ceiA3, University of Cordoba Cordoba, Spain
| | - Marilena Budroni
- Department of Agricultural Sciences, University of Sassari Sassari, Italy
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Determination of free amino acids in burley tobacco by high performance liquid chromatography. Saudi J Biol Sci 2016; 23:S64-8. [PMID: 26858568 PMCID: PMC4705281 DOI: 10.1016/j.sjbs.2015.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/13/2015] [Accepted: 08/16/2015] [Indexed: 11/22/2022] Open
Abstract
A reversed-phase high performance liquid chromatographic method was developed for determining free amino acids in burley tobacco. The test was done by OPA/3-mercaptopropionic acid as the pre-column derivatizing reagent. Chromatographic column was Elitte C(18) column (4.6 mm × 250 mm i.d., 5 μm). Mobile phase A was 18 mol/l NaAc (pH7.2) including 0.002%(v/v) triethylamine and 0.3%(v/v) furanidine. Mobile phase B was 100 mol/l NaAc (pH7.2)-acetonitrile-methanol (v/v = 1:2:2). The column temperature was 40 °C and the flow rate was 1.0 ml/min. The fluorescence detector was used with 350 nm excitation wave length and 450 nm emission wave length. The average recoveries of the method ranged from 95.3-100.7% with the relative standard deviation of 2.32-9.24%. The method is simple, accurate and has good repeatability. The results of the determination of seventeen kinds of free amino acids in burley leaves were produced by the way of different ratios of cake fertilizer and inorganic fertilizer. The results show that Aspartic acid has the highest content however ratio of cake fertilizer and inorganic fertilizer. The contents of most of the free amino acids are increased and then gradually decreased with the increase in organic manure. The contents of most of the free amino acids are very close at 15:85% ratio and 30:70% ratio of cake fertilizer and inorganic fertilizer. The total amount of free amino acids is the highest at 30:70% ratio of cake fertilizer and inorganic fertilizer. Considering comprehensively, the quality of burley leaves is the best at 30:70% ratio of cake fertilizer and inorganic fertilizer.
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Yu X, Liu Y, Cui Y, Cheng Q, Zhang Z, Lu JH, Meng Q, Teng L, Ren X. Measurement of filter paper activities of cellulase with microplate-based assay. Saudi J Biol Sci 2016; 23:S93-8. [PMID: 26858572 PMCID: PMC4705267 DOI: 10.1016/j.sjbs.2015.06.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 06/19/2015] [Accepted: 06/20/2015] [Indexed: 11/05/2022] Open
Abstract
It is always a challenge to determine the total cellulase activity efficiently without reducing accuracy. The most common total cellulase activity assay is the filter paper assay (FPA) established by the International Union of Pure and Applied Chemistry (IUPAC). A new procedure to measure the FPA with microplate-based assay was studied in this work, which followed the main idea of IUPAC to dilute cellulase preparation to get fixed glucose release. FPAs of six cellulase preparations were determined with the microplate-based assay. It is shown that FPAs of cellulase Youtell, RCconc, R-10, Lerkam, Yishui and Sinopharm were 67.9, 46.0, 46.1, 27.4, 7.6 and 8.0 IU/ml respectively. There was no significant difference at the 95% confidence level between the FPA determined with IUPAC and the microplate-based assay. It could be concluded that the FPA could be determined by the microplate-based assay with the same accuracy and much more efficiency compared with that by IUPAC.
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Affiliation(s)
- Xiaoxiao Yu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University, Changchun 130023, China
| | - Yan Liu
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Yuxiao Cui
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Qiyue Cheng
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Zaixiao Zhang
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Jia Hui Lu
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Qingfan Meng
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Lirong Teng
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Xiaodong Ren
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, China
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Hao F, He Y, Sun Y, Zheng B, Liu Y, Wang X, Zhang Y, Lee RJ, Teng L, Xie J. Improvement of oral availability of ginseng fruit saponins by a proliposome delivery system containing sodium deoxycholate. Saudi J Biol Sci 2016; 23:S113-25. [PMID: 26858556 PMCID: PMC4705292 DOI: 10.1016/j.sjbs.2015.09.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 09/10/2015] [Accepted: 09/14/2015] [Indexed: 11/24/2022] Open
Abstract
Ginseng fruit saponins (GFS) extracted from the ginseng fruit are the bioactive triterpenoid saponin components. The aim of the present study was to develop a drug delivery system called proliposome using sodium deoxycholate (NaDC) as a bile salt to improve the oral bioavailability of GFS in rats. The liposomes of GFS were prepared by a conventional ethanol injection and formed the solid proliposomes (P-GFS) using spray drying method on mannitol carriers. The formulation of P-GFS was optimized using the response surface methodology. The physicochemical properties of liposome suspensions including encapsulation efficiency, in vitro drug release studies, particle size of the reconstituted liposome were tested. The solid state characterization studies using the method of Field emission-scanning electron microscope (FE-SEM), Fourier transform infrared (FT-IR) and Differential scanning colorimetric (DSC) were tested to study the molecular state of P-GFS and to indicate the interactions among the formulation ingredients. In vitro studies showed a delayed release of ginsenoside Re (GRe). In vivo studies were carried out in rats. The concentrations of GRe in plasma of rats and its pharmacokinetic behaviors after oral administration of GFS, Zhenyuan tablets (commercial dosage form of GFS) and P-GFS were studied using ultra performance liquid chromatography tandem mass spectrometry. It was founded that the GRe concentration time curves of GFS, Zhenyuan tablets and P-GFS were much more different in rats. Pharmacokinetic behaviors of P-GFS showed a second absorption peak on the concentration time curve. The pharmacokinetic parameters of GFS, Zhenyuan tablets, P-GFS in rats were separately listed as follows: T max 0.25 h, C max 474.96 ± 66.06 ng/ml and AUC0-∞ 733.32 ± 113.82 ng/ml h for GFS; T max 0.31 ± 0.043 h, C max 533.94 ± 106.54 ng/ml and AUC0-∞ 1151.38 ± 198.29 ng/ml h for Zhenyuan tablets; T max 0.5 h, C max 680.62 ± 138.051 ng/ml and AUC0-∞ 2082.49 ± 408.33 ng/ml h for the P-GFS. The bioavailability of P-GFS was nearly 284% and 181% of the GFS and Zhengyuan tablets respectively. In conclusion, the proliposomes significantly enhanced the drug bioavailability, absorption in the gastrointestinal tract and decreased its elimination time of GRe in rats and could be selectively applied for oral delivery of GFS.
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Affiliation(s)
- Fei Hao
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Yanxi He
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Yating Sun
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Bin Zheng
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Yan Liu
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Xinmei Wang
- College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Yongkai Zhang
- The Firest Hospital of Jilin University, Changchun, Jilin 130012, China
| | - Robert J. Lee
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
- College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Lirong Teng
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
| | - Jing Xie
- College of Life Sciences, Jilin University, Changchun, Jilin 130012, China
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Liu Y, Lu C, Meng Q, Lu J, Fu Y, Liu B, Zhou Y, Guo W, Teng L. Near infrared spectroscopy coupled with radial basis function neural network for at-line monitoring of Lactococcus lactis subsp. fermentation. Saudi J Biol Sci 2016; 23:S106-12. [PMID: 26858554 PMCID: PMC4705242 DOI: 10.1016/j.sjbs.2015.06.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 06/20/2015] [Accepted: 06/22/2015] [Indexed: 12/01/2022] Open
Abstract
In our previous work, partial least squares (PLSs) were employed to develop the near infrared spectroscopy (NIRs) models for at-line (fast off-line) monitoring key parameters of Lactococcus lactis subsp. fermentation. In this study, radial basis function neural network (RBFNN) as a non-linear modeling method was investigated to develop NIRs models instead of PLS. A method named moving window radial basis function neural network (MWRBFNN) was applied to select the characteristic wavelength variables by using the degree approximation (Da) as criterion. Next, the RBFNN models with selected wavelength variables were optimized by selecting a suitable constant spread. Finally, the effective spectra pretreatment methods were selected by comparing the robustness of the optimum RBFNN models developed with pretreated spectra. The results demonstrated that the robustness of the optimal RBFNN models were better than the PLS models for at-line monitoring of glucose and pH of L. lactis subsp. fermentation.
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Affiliation(s)
- Yan Liu
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
| | - Chengyu Lu
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
| | - Qingfan Meng
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
| | - Jiahui Lu
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
| | - Yao Fu
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
| | - Botong Liu
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
| | - Yongcan Zhou
- Ocean College, Hainan University, Hainan, Haikou 570228, China
| | - Weiliang Guo
- Ocean College, Hainan University, Hainan, Haikou 570228, China
| | - Lesheng Teng
- College of Life Science, Jilin University, Jilin, Changchun 130012, China
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Rrong W, Aiping T, Ashraf MA. The effects of applying sewage sludge into Jiangxi red soil on the growth of vegetables and the migration and enrichment of Cu and Zn. Saudi J Biol Sci 2015; 23:660-6. [PMID: 27579018 PMCID: PMC4992094 DOI: 10.1016/j.sjbs.2015.10.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 10/27/2015] [Accepted: 10/29/2015] [Indexed: 12/04/2022] Open
Abstract
Jiangxi red soil was used as the tested soil and water spinach (Ipomoea aquatic) and Chinese chive (Allium tuberosum) were used as the tested vegetables in this study to investigate the effects of different amounts of sewage-sludge application on the growth of vegetables and the migration and enrichment patterns of Cu and Zn in vegetables using the potted method. The results indicated that the application of sewage sludge could improve the properties of red soil and promote vegetable growth. The dry weight of water spinach and Chinese chive reached the maximal levels when treated with the amount of sewage sludge at 4% and 10%, which was 4.38 ± 0.82 g and 1.56 ± 0.31 g, respectively. The dry weights after the application of sewage sludge were all larger than control treatment (CK) without sludge application. With increases in the applied amount of sewage sludge, the concentrations of Cu and Zu in red soil continued to increase, and the peak value was not reached. After the two vegetables were planted, the concentrations of Cu and Zn in red soil decreased by different degrees. The degrees of decrease of Zn were generally higher than those of Cu. The enrichment coefficient of water spinach on Cu showed a trend of increase followed by a decrease and reached the peak value of 1.04 ± 0.38 when the applied amount was 4%. The enrichment coefficient of Chinese chive on Cu overall showed a decreasing trend and did not reach the peak value under the treatment levels used in this experiment. The enrichment pattern of Chinese chive on Zn was not obvious, and the differences among all treatment levels were not significant (p < 0.05). However, the enrichment coefficient after the application of sewage sludge was significantly lower than that without the application of sludge.
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Affiliation(s)
- Wang Rrong
- College of Land Resource and Environment, Jiangxi Agriculture University, Nanchang 330045, China
| | - Tang Aiping
- School of Environmental and Chemical Engineering, Nanchang Hongkong University, Nanchang City, China
| | - Muhammad Aqeel Ashraf
- Water Research Unit, Faculty of Science & Natural Resources, University Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
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50
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Spectral, electrochemical and molecular docking methods to get an understanding of supramolecular chemistry of sulfa drugs to biomolecules. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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