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Najid N, Hakizimana JN, Kouzbour S, Gourich B, Ruiz-García A, Vial C, Stiriba Y, Semiat R. Fouling control and modeling in reverse osmosis for seawater desalination: A review. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2022.107794] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Current Understanding on Adhesion and Biofilm Development in Actinobacteria. Int J Microbiol 2021; 2021:6637438. [PMID: 34122552 PMCID: PMC8166509 DOI: 10.1155/2021/6637438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 05/07/2021] [Indexed: 12/30/2022] Open
Abstract
Biofilm formation and microbial adhesion are two related and complex phenomena. These phenomena are known to play an important role in microbial life and various functions with positive and negative aspects. Actinobacteria have wide distribution in aquatic and terrestrial ecosystems. This phylum is very large and diverse and contains two important genera Streptomyces and Mycobacteria. The genus Streptomyces is the most biotechnologically important, while the genus Mycobacteria contains the pathogenic species of Mycobacteriaceae. According to the literature, the majority of studies carried out on actinomycetes are focused on the detection of new molecules. Despite the well-known diversity and metabolic activities, less attention has been paid to this phylum. Research on adhesion and biofilm formation is not well developed. In the present review, an attempt has been made to review the literature available on the different aspects on biofilm formation and adhesion of Actinobacteria. We focus especially on the genus Streptomyces. Furthermore, a brief overview about the molecules and structures involved in the adhesion phenomenon in the most relevant genus is summarized. We mention the mechanisms of quorum sensing and quorum quenching because of their direct association with biofilm formation.
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3
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Electrochemical Polishing of Austenitic Stainless Steels. MATERIALS 2020; 13:ma13112557. [PMID: 32512733 PMCID: PMC7321480 DOI: 10.3390/ma13112557] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 11/17/2022]
Abstract
Improvement of the corrosion resistance capability, surface roughness, shining of stainless-steel surface elements after electrochemical polishing (EP) is one of the most important process characteristics. In this paper, the mechanism, obtained parameters, and results were studied on electropolishing of stainless-steel samples based on the review of the literature. The effects of the EP process parameters, especially current density, temperature, time, and the baths used were presented and compared among different studies. The samples made of stainless steel presented in the articles were analysed in terms of, among other things, surface roughness, resistance to corrosion, microhardness, and chemical composition. All results showed that the EP process greatly improved the analysed properties of the stainless-steel surface elements.
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Arul A, Sivagnanam S, Dey A, Mukherjee O, Ghosh S, Das P. The design and development of short peptide-based novel smart materials to prevent fouling by the formation of non-toxic and biocompatible coatings. RSC Adv 2020; 10:13420-13429. [PMID: 35493017 PMCID: PMC9051384 DOI: 10.1039/c9ra10018k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 03/09/2020] [Indexed: 12/15/2022] Open
Abstract
Biofouling refers to the undesirable process that leads to the accumulation of microorganisms such as bacteria or fungi on substrates. This is one of the major concerns associated with several components of our regular life such as food, health, water and energy. In the healthcare sector, biofouling on medical devices is known to cause infections, which are often resistant to conventional antibiotics and lead to increase in the number of hospital and surgery-related deaths. One of the better ways to tackle the problem of biofouling is the development of smart antifouling materials that can produce a biocompatible, non-toxic, eco-friendly and functional coating and maintain a biological environment without any adverse effect. To this end, in the present study, we have reported the design and synthesis of two simple chemically modified peptides, namely, PA1 (PFB-VVD) and PA2 (PFB-LLE). The design as well as the amino acid sequence of the peptides contains three basic components that enable their ability to (i) self-assemble into functional coatings, (ii) bind with the desired surface via the bi-dentate coordination of dicarboxylate groups and (iii) exhibit antifouling activity and generate a non-toxic biocompatible supramolecular coating on the desired surface. PA1 having aspartic acid as the anchoring moiety exhibits better antifouling activity compared to PA2 that has glutamic acid as the anchoring moiety. This is probably due to the greater adhesive force or binding affinity of aspartic acid to the examined surface compared to that of glutamic acid, as confirmed by force measurement studies using AFM. Most importantly, the simple drop-coating method promises great advantages due to its ease of operation, which leads to a reduction in the production cost and increase in the scope of commercialization. To the best of our knowledge, this is the first attempt to develop an ultra-short peptide-based smart antifouling material with a dicarboxylate group as the surface binding moiety. Furthermore, these findings promise to provide further insights into antifouling mechanisms in the future by the development of a smart material using a dicarboxylate group as an anchoring moiety.
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Affiliation(s)
- Amutha Arul
- Department of Chemistry, SRMIST SRM Nagar, Potheri, Kattankulathur, Kancheepuram District Chennai Tamil Nadu 603203 India
| | - Subramaniyam Sivagnanam
- Department of Chemistry, SRMIST SRM Nagar, Potheri, Kattankulathur, Kancheepuram District Chennai Tamil Nadu 603203 India
| | - Ananta Dey
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad - 201002 India
- CSIR-Central Salt & Marine Chemicals Research Institute Bhavnagar 364002 India
| | - Oindrilla Mukherjee
- Department of Biotechnology, National Institute of Technology Durgapur West Bengal - 713209 India
| | - Soumyajit Ghosh
- Department of Chemistry, SRMIST SRM Nagar, Potheri, Kattankulathur, Kancheepuram District Chennai Tamil Nadu 603203 India
| | - Priyadip Das
- Department of Chemistry, SRMIST SRM Nagar, Potheri, Kattankulathur, Kancheepuram District Chennai Tamil Nadu 603203 India
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5
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Recent advances in functionalized polymer membranes for biofouling control and mitigation in forward osmosis. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117604] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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6
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Singh G, Bremmell K, Griesser HJ, Kingshott P. Colloid-probe AFM studies of the surface functionality and adsorbed proteins on binary colloidal crystal layers. RSC Adv 2017. [DOI: 10.1039/c6ra28491d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We demonstrate the applicability of colloid-probe AFM to detect different surface chemistries on binary colloidal crystal layers of different chemical and protein patterns.
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Affiliation(s)
- Gurvinder Singh
- Interdisciplinary Nanoscience Centre
- Faculty of Science
- Aarhus University
- Denmark
- Department of Materials Science and Engineering
| | - Kristen Bremmell
- School of Pharmacy and Medical Sciences
- University of South Australia
- Adelaide 5000
- Australia
| | - Hans J. Griesser
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
| | - Peter Kingshott
- Interdisciplinary Nanoscience Centre
- Faculty of Science
- Aarhus University
- Denmark
- Department of Chemistry and Biotechnology
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7
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Santiago-Morales J, Amariei G, Letón P, Rosal R. Antimicrobial activity of poly(vinyl alcohol)-poly(acrylic acid) electrospun nanofibers. Colloids Surf B Biointerfaces 2016; 146:144-51. [DOI: 10.1016/j.colsurfb.2016.04.052] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/05/2016] [Accepted: 04/30/2016] [Indexed: 11/28/2022]
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8
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Contreras-Caceres R, Santos CM, Li S, Kumar A, Zhu Z, Kolar SS, Casado-Rodriguez MA, Huang Y, McDermott A, Lopez-Romero JM, Cai C. Modification of fluorous substrates with oligo(ethylene glycol) via "click" chemistry for long-term resistance of cell adhesion. J Colloid Interface Sci 2015. [PMID: 26210101 DOI: 10.1016/j.jcis.2015.07.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
In this work perfluorinated substrates fabricated from SiO2 glass slides are modified with oligo(ethylene glycol) (OEG) units for long-term resistance of cell adhesion purposes, based on fluorous interactions and click chemistry. Specifically, fluorous substrates, prepared by treatment of glass slides with 1H, 1H, 2H, 2H-perfluorodecyltrimethoxysilane (FAS17), were coated with ethynyl-OEG-C8F17, followed by covalent attachment of an azido-OEG via copper-catalyzed azide-alkyne cycloaddition (CuAAC) "click" reaction. We demonstrate that the resultant surface avoid fibrinogen adsorption and resisted cell adhesion for over 14days. X-ray photoemission spectroscopy (XPS) analysis and contact angle goniometry measurements confirm the presence of the OEG molecules on the fluorous substrates. Bright field optical images show total absence of 3T3 fibroblast cells on the OEG modified fluorinated substrate for 1 and 5days, and a remarkably decrease of cell adhesion at 14days.
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Affiliation(s)
- Rafael Contreras-Caceres
- Department of Chemistry, University of Houston, Houston, TX 77204, USA; Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071, Spain.
| | | | - Siheng Li
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
| | - Amit Kumar
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
| | - Zhiling Zhu
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
| | - Satya S Kolar
- College of Optometry, University of Houston, Houston, TX 77204, USA.
| | | | - Yongkai Huang
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
| | - Alison McDermott
- College of Optometry, University of Houston, Houston, TX 77204, USA.
| | | | - Chengzhi Cai
- Department of Chemistry, University of Houston, Houston, TX 77204, USA.
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Araújo PA, Mergulhão F, Melo L, Simões M. The ability of an antimicrobial agent to penetrate a biofilm is not correlated with its killing or removal efficiency. BIOFOULING 2014; 30:675-683. [PMID: 24773258 DOI: 10.1080/08927014.2014.904294] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The penetration ability of 12 antimicrobial agents, including antibiotics and biocides, was determined against biofilms of B. cereus and P. fluorescens using a colony biofilm assay. The surfactants benzalkonium chloride (BAC) and cetyltrimethyl ammonium bromide (CTAB), and the antibiotics ciprofloxacin and streptomycin were of interest due to their distinct activities. Erythromycin and CTAB were retarded by the presence of biofilms, whereas ciprofloxacin and BAC were not. The removal and killing efficacies of these four agents was additionally evaluated against biofilms formed in microtiter plates. The most efficient biocide was CTAB for both bacterial biofilms. Ciprofloxacin was the best antibiotic although none of the selected antimicrobial agents led to total biofilm removal and/or killing. Comparative analysis of the results obtained with colony biofilms and microtiter plate biofilms show that although extracellular polymeric substances and the biofilm structure are considered a determining factor in biofilm resistance, the ability of an antimicrobial agent to penetrate a biofilm is not correlated with its killing or removal efficiency. Also, the results reinforce the role of an appropriate antimicrobial selection as a key step in the design of disinfection processes for biofilm control.
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Affiliation(s)
- Paula A Araújo
- a LEPABE, Faculty of Engineering, Department of Chemical Engineering , University of Porto , Porto , Portugal
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10
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Yun HS, Kim Y, Park MR, Kim SH, Oh S. Inhibitory effects of the κ-casein macropeptide isolated from milk protein on the biofilm formation and virulence of Listeria monocytogenes. Biosci Biotechnol Biochem 2014; 78:490-8. [DOI: 10.1080/09168451.2014.885829] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Abstract
We demonstrate the inhibitory effects of κ-casein macropeptide (CMP) on the biofilm formation and virulence of Listeria monocytogenes Scott A. The inhibition of biofilm formation by CMP was initially investigated by using the protocol applied for the 96-well microtiter plate assay. Low concentrations of CMP (0.1, 0.2, 0.3, 0.4, and 0.5 mg/mL) that were tested resulted in a profound inhibitory effect on biofilm formation at a concentration of 0.4 mg/mL. CMP also significantly repressed the transcription of inlA (encoding internalin A) that was responsible for the initial adhesion and invasion event, and prolonged the survival of Caenorhabditis elegans infected by L. monocytogenes. Two-dimensional gel electrophoresis showed that newly identified proteins in the presence of CMP were involved in the stress response and metabolic processes that have important roles in developing listerial biofilms. Our results suggest that CMP from milk protein would be capable of eliminating biofilm formation and virulence by L. monocytogenes in the food industry.
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Affiliation(s)
- Hyun Sun Yun
- BK21 Plus Graduate Program, Department of Animal Science, Institute of Rare Earth for Biological Application, Chonbuk National University, Jeonju, Korea
| | - Younghoon Kim
- BK21 Plus Graduate Program, Department of Animal Science, Institute of Rare Earth for Biological Application, Chonbuk National University, Jeonju, Korea
| | - Mi Ri Park
- BK21 Plus Graduate Program, Department of Animal Science, Institute of Rare Earth for Biological Application, Chonbuk National University, Jeonju, Korea
| | - Sae Hun Kim
- Division of Food Bioscience and Technology, Korea University, Seoul, Korea
| | - Sejong Oh
- Division of Animal Science, Chonnam National University, Gwangju, Korea
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11
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Zeng M, Soric A, Ferrasse JH, Roche N. Interpreting hydrodynamic behaviour by the model of stirred tanks in series with exchanged zones: preliminary study in lab-scale trickling filters. ENVIRONMENTAL TECHNOLOGY 2013; 34:2571-2578. [PMID: 24527618 DOI: 10.1080/09593330.2013.781199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In trickling filters for wastewater treatment, hydrodynamic behaviour is affected by the growth of biofilm on the porous medium. Therefore, modelling hydrodynamic behaviour is necessary and efficient to predict the biodegradation of pollutants. In this study, laboratory-scale trickling filters were filled with two different porous media (glass beads and plastic rings) and were fed by a synthetic substrate in batch mode. Total organic carbon (TOC) of the effluent was measured and retention time distribution (RTD) was determined by injecting NaCl. Results showed that medium had no significant effect on TOC removal rate (around 80% and 60% respectively for batch time of seven and two days). However, regarding the hydrodynamic behaviour, the effective volume ratio and hydraulic efficiency in the glass beads bed increased remarkably from 28% and 18% to 80% and 70%, respectively, with the reduction of dispersion coefficient (from 4.55 to 1.53). Moreover, the short batch time accelerated this change. Conversely, no variation of hydrodynamic behaviour in plastic rings bed was evident. Along with the feeding of synthetic substrate, biofilm concentration ranged from 1.5 to 10.1 g/L in the glass beads reactor and it achieved around 2.8 g/L in the plastic rings reactor. Hydrodynamic modelling indicated that the model of stirred tanks in series with exchanged zones fitted the experimental results well. These gave values of mobile and immobile volumes of 51 mL and 17 mL, respectively, in the glass beads filter and 25 mL and 15 mL, respectively, in the plastic rings filter.
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Affiliation(s)
- Ming Zeng
- Aix Marseille Université, Marseilles, France
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12
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Li S, Yang D, Tu H, Deng H, Du D, Zhang A. Protein adsorption and cell adhesion controlled by the surface chemistry of binary perfluoroalkyl/oligo(ethylene glycol) self-assembled monolayers. J Colloid Interface Sci 2013; 402:284-90. [DOI: 10.1016/j.jcis.2013.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 04/03/2013] [Accepted: 04/04/2013] [Indexed: 10/26/2022]
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13
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Hamid K, Faten K, Soumya EA, Saad IK, Hasna M, Hassan L, Moktar H. Bacillus cereus adhesion: Real time investigation of the effect on the chemistry of industrial stainless steel. Microbiology (Reading) 2013. [DOI: 10.1134/s0026261713010165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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14
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Wei W, Yu J, Broomell C, Israelachvili JN, Waite JH. Hydrophobic enhancement of Dopa-mediated adhesion in a mussel foot protein. J Am Chem Soc 2012; 135:377-83. [PMID: 23214725 DOI: 10.1021/ja309590f] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dopa (3,4-dihydroxyphenylalanine) is recognized as a key chemical signature of mussel adhesion and has been adopted into diverse synthetic polymer systems. Dopa's notorious susceptibility to oxidation, however, poses significant challenges to the practical translation of mussel adhesion. Using a surface forces apparatus to investigate the adhesion of mussel foot protein 3 (Mfp3) "slow", a hydrophobic protein variant of the Mfp3 family in the plaque, we have discovered a subtle molecular strategy correlated with hydrophobicity that appears to compensate for Dopa instability. At pH 3, where Dopa is stable, Mfp3 slow, like Mfp3 "fast" adhesion to mica, is directly proportional to the mol % of Dopa present in the protein. At pH of 5.5 and 7.5, however, loss of adhesion in Mfp3 slow was less than half that occurring in Mfp3 fast, purportedly because Dopa in Mfp3 slow is less prone to oxidation. Indeed, cyclic voltammetry showed that the oxidation potential of Dopa in Mfp3 slow is significantly higher than in Mfp3 fast at pH of 7.5. A much greater difference between the two variants was revealed in the interaction energy of two symmetric Mfp3 slow films (E(ad) = -3 mJ/m(2)). This energy corresponds to the energy of protein cohesion which is notable for its reversibility and pH independence. Exploitation of aromatic hydrophobic sequences to protect Dopa against oxidation as well as to mediate hydrophobic and H-bonding interactions between proteins provides new insights for developing effective artificial underwater adhesives.
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Affiliation(s)
- Wei Wei
- Materials Research Laboratory, University of California, Santa Barbara, California 93106, United States
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15
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Gao J, Yan D, Ni H, Wang L, Yang Y, Wang X. Protein-resistance performance enhanced by formation of highly-ordered perfluorinated alkyls on fluorinated polymer surfaces. J Colloid Interface Sci 2012; 393:361-8. [PMID: 23151385 DOI: 10.1016/j.jcis.2012.10.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 10/11/2012] [Accepted: 10/12/2012] [Indexed: 10/27/2022]
Abstract
In this paper, the relationship between the surface structure of fluorinated polymers and their protein-resistant property was studied by preparing films of poly(n-alkyl methacrylate) end-capped with 2-perfluorooctylethyl methacrylate (FMA) (PFMA(y)-ec-PnAMA(x)-ec-PFMA(y)) with various ordered structures of perfluorinated alkyls. These fluorinated polymers were synthesized via a controlled/living atom-transfer radical polymerization (ATRP) method. Both the surface free energy and the CF(3)/CF(2) ratio obtained by X-ray photoelectron spectroscopy (XPS) were employed to scale the ordered structures of the perfluorinated alkyls. Protein adsorption studies using fibrinogen as a test molecule were undertaken on the various films by XPS. The results show that the adsorbed mass of fibrinogen decreased linearly with increasing CF(3)/CF(2) ratio on the fluorinated polymer surfaces. When the CF(3)/CF(2) ratio reaches 0.26, there was almost no fibrinogen adsorption. This work not only demonstrates the design of a fluorinated copolymer film on glass substrate with desirable protein-resistant performance, but also provides a fundamental understanding of how the orientation of perfluoroalkyl side chains affects protein-resistant behavior on fluorinated surfaces.
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Affiliation(s)
- Jie Gao
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of The Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
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16
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Subramani C, Saha K, Creran B, Bajaj A, Moyano DF, Wang H, Rotello VM. Cell alignment using patterned biocompatible gold nanoparticle templates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:1209-13, 1126. [PMID: 22354857 PMCID: PMC3605712 DOI: 10.1002/smll.201102405] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Indexed: 05/22/2023]
Abstract
Biocompatible structures are produced for cellular patterning. The biocompatible surfaces are generated to provide protein nonfouling patterns, offering direct communication to the cells for controlling cell adhesion and proliferation. These biofunctional surfaces provide a platform for aligning the cells in the direction of patterns, indicating potential application in the field of tissue engineering.
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Affiliation(s)
| | - Krishnendu Saha
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts 01003
| | - Brian Creran
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts 01003
| | - Avinash Bajaj
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts 01003
| | - Daniel F. Moyano
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts 01003
| | - Hao Wang
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts 01003
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, Massachusetts 01003
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Alnnasouri M, Lemaitre C, Gentric C, Dagot C, Pons MN. Influence of surface topography on biofilm development: Experiment and modeling. Biochem Eng J 2011. [DOI: 10.1016/j.bej.2011.08.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Subramani C, Bajaj A, Miranda OR, Rotello VM. Biocompatible charged and uncharged surfaces using nanoparticle films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:5420-5423. [PMID: 20925103 DOI: 10.1002/adma.201002851] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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19
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Smart Polymer Surfaces: Concepts and Applications in Biosciences. BIOACTIVE SURFACES 2010. [DOI: 10.1007/12_2010_88] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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20
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Chen Y, Thayumanavan S. Amphiphilicity in homopolymer surfaces reduces nonspecific protein adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13795-9. [PMID: 19583189 PMCID: PMC2889211 DOI: 10.1021/la901692a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Amphiphilic homopolymer films have been immobilized onto substrates to study the interactions of these polymers with proteins. X-ray photoelectron spectroscopy (XPS) was utilized to measure the amount of protein adsorption. Amphiphilic homopolymers have been shown to reduce protein adsorption, despite the high affinity of the hydrophobic or hydrophilic functional groups by themselves toward proteins. This protein-resistant property seems to arise from the unique molecular-scale alternation of incompatible functionalities. The combination of incompatible functionalities with a predefined alternating pattern within a monomer could provide a potential design for nonfouling materials.
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Affiliation(s)
- Yangbin Chen
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003
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21
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Statz AR, Kuang J, Ren C, Barron AE, Szleifer I, Messersmith PB. Experimental and theoretical investigation of chain length and surface coverage on fouling of surface grafted polypeptoids. Biointerphases 2009; 4:FA22-32. [PMID: 20300542 PMCID: PMC2838250 DOI: 10.1116/1.3115103] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Numerous strategies exist to prevent biological fouling of surfaces in physiological environments; our strategy focuses on the modification of surfaces with poly-N-substituted glycine oligomers (polypeptoids). We previously reported the synthesis and characterization of three novel polypeptoid polymers that can be used to modify titanium oxide surfaces, rendering the surfaces resistant to adsorption of proteins, to adhesion of mammalian and bacterial cells and to degradation by common protease enzymes. In this study, we investigated the effect of polypeptoid chain length on the antifouling properties of the modified surfaces. For these experiments we used poly(N-methoxyethyl) glycines with lengths between ten and fifty repeat units and determined the influence of chain length on coating thickness and density as well as resistance to protein adsorption and cellular adhesion. Short-term protein resistance remained low for all polymers, as measured by optical waveguide lightmode spectroscopy, while fibroblast adhesion after several weeks indicated reduced fouling resistance for the polypeptoid-modified surfaces with the shortest chain length polymer. Experimental observations were compared to predictions obtained from a molecular theory of polymer and protein adsorption. Good agreement was found between experiment and theory for the chain length dependence of peptoid grafting density, and for protein adsorption as a function of peptoid grafting density. The theoretical predictions provide specific guidelines for the surface coverage for each molecular weight for optimal antifouling. The predictions show the relationship between polymer layer structure and fouling.
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Affiliation(s)
- Andrea R Statz
- Biomedical Engineering Department, Northwestern University, 2145 Sheridan Rd, Rm E310, Evanston, IL 60208
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22
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Fang W, Hu J, Ong S. Influence of phosphorus on biofilm formation in model drinking water distribution systems. J Appl Microbiol 2009; 106:1328-35. [DOI: 10.1111/j.1365-2672.2008.04099.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Statz AR, Barron AE, Messersmith PB. Protein, cell and bacterial fouling resistance of polypeptoid-modified surfaces: effect of side-chain chemistry. SOFT MATTER 2008; 4:131-139. [PMID: 21472038 PMCID: PMC3070312 DOI: 10.1039/b711944e] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Peptidomimetic polymers consisting of poly-N-substituted glycine oligomers (polypeptoids) conjugated to biomimetic adhesive polypeptides were investigated as antifouling surface coatings. The polymers were immobilized onto TiO(2) surfaces via an anchoring peptide consisting of alternating residues of 3,4-dihydroxyphenylalanine (DOPA) and lysine. Three polypeptoid side-chain compositions were investigated for antifouling performance and stability toward enzymatic degradation. Ellipsometry and XPS analysis confirmed that purified polymers adsorbed strongly to TiO(2) surfaces, and the immobilized polymers were resistant to enzymatic degradation as demonstrated by mass spectrometry. All polypeptoid-modified surfaces exhibited significant reductions in adsorption of lysozyme, fibrinogen and serum proteins, and were resistant to 3T3 fibroblast cell attachment for up to seven days. Long-term in vitro cell attachment studies conducted for six weeks revealed the importance of polypeptoid side-chain composition, with a methoxyethyl side chain providing superior long-term fouling resistance compared to hydroxyethyl and hydroxypropyl side chains. Finally, attachment of both gram-positive and gram-negative bacteria for up to four days under continuous-flow conditions was significantly reduced on the polypeptoid-modified surfaces compared to unmodified TiO(2) surfaces. The results reveal the influence of polypeptoid side-chain chemistry on short-term and long-term protein, cell and bacterial fouling resistance.
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Affiliation(s)
- Andrea R. Statz
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA
| | - Annelise E. Barron
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA
- Institute for Bio Nanotechnology in Medicine, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA
| | - Phillip B. Messersmith
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA
- Institute for Bio Nanotechnology in Medicine, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA
- Department of Materials Science and Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA
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Barrett EW, Phelps MVB, Silva RJ, Gaumond RP, Allcock HR. Patterning poly(organophosphazenes) for selective cell adhesion applications. Biomacromolecules 2006; 6:1689-97. [PMID: 15877395 DOI: 10.1021/bm049193z] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Five polyphosphazenes with different hydrophilicites were synthesized and screened in vitro. The purpose was to identify unique types of polymeric substrates that distinctly favored or markedly prevented cellular adhesion. The SK-N-BE(2c) human neuroblastoma cell line, utilized for its electrogenic responses, was used to test this differential adhesion. In particular, the objective was to specifically culture this cell line in a highly selective pattern. Each candidate polymer was cast into films and plated with neuroblastoma cells for 3 days. The polyphosphazene materials which showed negative cellular adhesive properties (-CAPs) were poly[bis(trifluoroethoxy)phosphazene] (TFE) and poly[bis(methoxyethoxyethoxy)phosphazene] (MEEP). The polyphosphazenes which showed positive cellular adhesive properties (+CAPs) were poly[(methoxyethoxyethoxy)(1.0)(carboxylatophenoxy)(1.0)phosphazene] (PMCPP), poly[(methoxyethoxyethoxy)(1.0)(cinnamyloxy)(1.0)phosphazene] (PMCP), and poly[(methoxyethoxyethoxy)(1.0)(p-methylphenoxy)(1.0)phosphazene] (PMMP). To test cellular selectivity, films of -CAP and +CAP were copatterned onto glass substrates. The micropatterned films were plated with SK-N-BE(2c) neuroblastoma cells for one week. The results showed that neuroblastoma cells adhere selectively (over 60%) to the +CAP microfeatures. We also showed that multiple properties can be achieved with a single material and that we can use TFE as both a -CAP and an insulation layer and PMCP as a conductive +CAP layer.
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Affiliation(s)
- Eric W Barrett
- Department of Chemistry, 104 Chemistry Building, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Statz AR, Meagher RJ, Barron AE, Messersmith PB. New Peptidomimetic Polymers for Antifouling Surfaces. J Am Chem Soc 2005; 127:7972-3. [PMID: 15926795 DOI: 10.1021/ja0522534] [Citation(s) in RCA: 294] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exposure of therapeutic and diagnostic medical devices to biological fluids is often accompanied by interfacial adsorption of proteins, cells, and microorganisms. Biofouling of surfaces can lead to compromised device performance or increased cost and in some cases may be life-threatening to the patient. Although numerous antifouling polymer coatings have enjoyed short-term success in preventing protein and cell adsorption on surfaces, none have proven ideal for conferring long-term biofouling resistance. Here we describe a new biomimetic antifouling N-substituted glycine polymer (peptoid) containing a C-terminal peptide anchor derived from residues found in mussel adhesive proteins for robust attachment of the polymer onto surfaces. The methoxyethyl side chain of the peptoid portion of the polymer was chosen for its chemical resemblance to the repeat unit of the known antifouling polymer poly(ethylene glycol) (PEG), whereas the composition of the 5-mer anchoring peptide was chosen to directly mimic the DOPA- and Lys-rich sequence of a known mussel adhesive protein. Surfaces modified with this biomimetic peptide-peptoid conjugate exhibited dramatic reduction of serum protein adsorption and resistance to mammalian cell attachment for over 5 months in an in vitro assay. These new synthetic peptide based antifouling polymers may provide long-term control of surface biofouling in the physiologic, marine, and industrial environments.
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Affiliation(s)
- Andrea R Statz
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
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Parent ME, Velegol D. E. coli adhesion to silica in the presence of humic acid. Colloids Surf B Biointerfaces 2004; 39:45-51. [PMID: 15542339 DOI: 10.1016/j.colsurfb.2004.08.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2004] [Revised: 08/27/2004] [Accepted: 08/30/2004] [Indexed: 10/26/2022]
Abstract
The influence of humic acid on the adhesion of Escherichia coli to silica particles or glass surfaces was investigated. After adsorbing various amounts of humic acid to the particles or surfaces, bacteria were added to the sample and allowed to adhere. For the silica particles the number of bacteria-particle couplets formed were counted from video microscopy images. For the glass surfaces, a differential electrophoresis force was applied, and the force required to detach the bacteria was quantified. These experiments showed a slight increase in the number of couplets formed in the presence of humic acid, and also showed a slight increase in the force required for detachment of the bacteria. Although an increase in adhesion number and strength was measured, the magnitude of the increase was small, indicating that humic acid plays a small role in bacterial adhesion to silica or glass surfaces.
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Affiliation(s)
- Mary E Parent
- Department of Chemical Engineering, The Pennsylvania State University, 111 Fenske Lab, University Park, PA 16802, USA
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Kingshott P, McArthur S, Thissen H, Castner DG, Griesser HJ. Ultrasensitive probing of the protein resistance of PEG surfaces by secondary ion mass spectrometry. Biomaterials 2002; 23:4775-85. [PMID: 12361616 DOI: 10.1016/s0142-9612(02)00228-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The highly sensitive surface analytical techniques X-ray photoelectron spectroscopy (XPS) and time-of-flight static secondary ion mass spectrometry (ToF-SIMS) were used to test the resistance of poly(ethylene glycol) (PEG) coatings towards adsorption of lysozyme (LYS) and fibronectin (FN). PEG coatings were prepared by grafting methoxy-terminated aldehyde-PEG (MW 5000 Da) onto two amino-functionalised surfaces with different amine group densities, generated by radio frequency glow discharge polymerisation of n-heptylamine and allylamine. Grafting was performed at the lower critical solution temperature to maximise the graft density of the PEG chains. XPS showed that the grafted density of PEG chains was slightly higher on the allylamine surface. XPS detected no adsorption of either protein on either PEG coating. ToF-SIMS analysis, on the other hand, found, in the positive ion spectra, minute but statistically significant signals assignable to amino acid fragment ions from both proteins adsorbed to the lower density PEG coating and from LYS but not FN on the higher density PEG coating. Negative ion spectra contained relatively more intense protein fragment ion signals for the lower density PEG coating but no changes assignable to adsorbed proteins on the higher density PEG coating. These results demonstrate the importance of utilising highly sensitive techniques to study protein adsorption on surfaces intended to be protein resistant, and that both positive and negative ion ToF-SIMS spectra should be acquired to probe for possible very low levels of protein adsorption.
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Affiliation(s)
- Peter Kingshott
- CSIRO Molecular Science, Bag 10, Clayton South MDC, Clayton, Vic 3169, Australia.
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Allan VJM, Callow ME, Macaskie LE, Paterson-Beedle M. Effect of nutrient limitation on biofilm formation and phosphatase activity of a Citrobacter sp. MICROBIOLOGY (READING, ENGLAND) 2002; 148:277-88. [PMID: 11782520 DOI: 10.1099/00221287-148-1-277] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A phosphatase-overproducing Citrobacter sp. (NCIMB 40259) was grown in an air-lift reactor in steady-state continuous culture under limitation of carbon, phosphorus or nitrogen. Substantial biofilm formation, and the highest phosphatase activity, were observed under lactose limitation. However, the total amount of biofilm wet biomass and the phosphatase specific activity were reduced in phosphorus- or nitrogen-limited cultures or when glucose was substituted for lactose as the limiting carbon source. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and confocal laser scanning microscopy (CLSM) showed differences in cell and biofilm morphology in relation to medium composition. Electron microscopy suggested that the differences in biofilm formation may relate to differential expression of fimbriae on the cell surface.
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Affiliation(s)
- Victoria J M Allan
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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Effects of ultrafiltration membrane surface properties on Pseudomonas aeruginosa biofilm initiation for the purpose of reducing biofouling. J Memb Sci 2001. [DOI: 10.1016/s0376-7388(01)00468-9] [Citation(s) in RCA: 191] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hayashi H, Tsuneda S, Hirata A, Sasaki H. Soft particle analysis of bacterial cells and its interpretation of cell adhesion behaviors in terms of DLVO theory. Colloids Surf B Biointerfaces 2001; 22:149-157. [PMID: 11451661 DOI: 10.1016/s0927-7765(01)00161-8] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The electrokinetic properties of two nitrifying strains, Nitrosomonas europaea and Nitrobacter winogradskyi, and three heterotrophic bacteria, Escherichia coli, Pseudomonas putida and Pseudomonas aeruginosa, were examined by electrophoretic mobility measurement and analyzed using the soft particle electrophoresis theory that is suitable for biological particles. The bacterial adhesion characteristics onto glass bead substratum were also evaluated by packed bed method. The mobility of the bacterial cells employed converged to a non-zero value as the ionic concentration increased, suggesting that the bacterial cells exhibited typical soft particle characteristics. Moreover, cell surface potentials based on the soft particle theory were lower than those estimated by the conventional Smoluchowski formula, i.e. zeta potential. Cell collision efficiencies onto glass beads (alpha(0)) were largely dependent on interfacial interaction, although almost electrically neutral P. aeruginosa did not follow that trend. From a comparison of alpha(0) with DLVO interaction energy maximum (V(max)), it was assumed that heterocoagulation between cell and substratum at primary minimum potential took place under V(max) of 24-34 kT based on soft particle analysis. On the other hand, V(max) predictions using the Smoluchowski theory gave 81-223 kT, which indicated the possibility of overestimating electrostatic repulsive forces by the conventional Smoluchowski theory. Thus, the application of this new electrophoresis theory to several kinds of bacterial cells has led to the revision of the interpretation of bacterial mobility data and provided a more detailed understanding of the bacterial adhesion phenomenon.
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Affiliation(s)
- H Hayashi
- Department of Chemical Engineering, School of Science and Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku-ku, 169-8555, Tokyo, Japan
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Kingshott P, St John HA, Chatelier RC, Griesser HJ. Matrix-assisted laser desorption ionization mass spectrometry detection of proteins adsorbed in vivo onto contact lenses. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 2000; 49:36-42. [PMID: 10559744 DOI: 10.1002/(sici)1097-4636(200001)49:1<36::aid-jbm5>3.0.co;2-b] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Identification of the biomolecules that form the first adsorbed monolayer, which thus effect "interface conversion", in competitive adsorption from multicomponent biological solutions can be challenging because of limitations in mass resolution and sensitivity of established techniques. In this study matrix-assisted laser desorption ionization (MALDI) time of flight mass spectrometry is developed and applied as a novel surface analytical method to enable analysis of adsorbed multicomponent biomolecule layers directly on the biomaterial surfaces. We show that proteins adsorbed in vivo (on human eyes) on contact lenses can be detected rapidly and conveniently by the diagnostic highly resolved mass signals recorded by MALDI mass spectrometry. This new approach allows detection of minor (and major) proteinaceous constituents of biofouled layers at levels substantially below monolayer coverage. Identification is done by comparison with molecular masses of known proteins. Specifically, it is shown that in addition to lysozyme, other low molecular weight proteins adsorb from human tear fluid onto contact lenses; these proteins had not been detected in earlier studies using other techniques.
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Affiliation(s)
- P Kingshott
- CSIRO Molecular Science, Private Bag 10, Clayton South MDC, Clayton 3169, Australia
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Barnes LM, Lo MF, Adams MR, Chamberlain AH. Effect of milk proteins on adhesion of bacteria to stainless steel surfaces. Appl Environ Microbiol 1999; 65:4543-8. [PMID: 10508087 PMCID: PMC91605 DOI: 10.1128/aem.65.10.4543-4548.1999] [Citation(s) in RCA: 154] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/1999] [Accepted: 07/15/1999] [Indexed: 11/20/2022] Open
Abstract
Stainless steel coupons were treated with skim milk and subsequently challenged with individual bacterial suspensions of Staphylococcus aureus, Pseudomonas fragi, Escherichia coli, Listeria monocytogenes, and Serratia marcescens. The numbers of attached bacteria were determined by direct epifluorescence microscopy and compared with the attachment levels on clean stainless steel with two different surface finishes. Skim milk was found to reduce adhesion of S. aureus, L. monocytogenes, and S. marcescens. P. fragi and E. coli attached in very small numbers to the clear surfaces, making the effect of any adsorbed protein layer difficult to assess. Individual milk proteins alpha-casein, beta-casein, kappa-casein, and alpha-lactalbumin were also found to reduce the adhesion of S. aureus and L. monocytogenes. The adhesion of bacteria to samples treated with milk dilutions up to 0.001% was investigated. X-ray photoelectron spectroscopy was used to determine the proportion of nitrogen in the adsorbed films. Attached bacterial numbers were inversely related to the relative atomic percentage of nitrogen on the surface. A comparison of two types of stainless steel surface, a 2B and a no. 8 mirror finish, indicated that the difference in these levels of surface roughness did not greatly affect bacterial attachment, and reduction in adhesion to a milk-treated surface was still observed. Cross-linking of adsorbed proteins partially reversed the inhibition of bacterial attachment, indicating that protein chain mobility and steric exclusion may be important in this phenomenon.
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Affiliation(s)
- L M Barnes
- School of Biological Sciences, University of Surrey, Guildford, GU2 5XH, United Kingdom
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Kingshott P, St John HA, Griesser HJ. Direct detection of proteins adsorbed on synthetic materials by matrix-assisted laser desorption ionization-mass spectrometry. Anal Biochem 1999; 273:156-62. [PMID: 10469485 DOI: 10.1006/abio.1999.4201] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The irreversible accumulation of biological material on synthetic surfaces ("biofouling") adversely affects for instance contact lenses, implantable biomedical devices, biosensors, water purification, transport and storage systems, and marine structures. It is shown here that proteins adsorbed on contact lenses can be detected directly, rapidly, and conveniently, with high sensitivity, by matrix-assisted laser desorption ionization (MALDI)-mass spectrometry. This new approach allows detection of minor (and major) proteinaceous constituents of biofouled layers on samples retrieved from clinical usage and in vitro protein adsorption studies, at levels substantially below monolayer coverage. Identification of the detected biological molecules can be done by comparison of the detected mass peaks with known protein molecular masses or with spectra recorded of pure compounds or by separate biochemical assays. The MALDI mass spectra recorded on different contact lenses contain peaks assignable to lysozyme and a number of smaller proteins. Such sensitive characterization of the early stages of biofouling enhances the understanding of protein/materials interactions and assists in designing guided strategies toward control of biological adsorption processes.
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Affiliation(s)
- P Kingshott
- CSIRO Molecular Science, Clayton South MDC, Clayton, 3169, Australia
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Shah SS, Desai JD, Ramakrishna C, Bhatt NM. Aerobic biotreatment of wastewater from dimethyl terephthalate plant using biomass support particles. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0922-338x(98)80116-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Masák J, Čejková A, Jirků V. Isolation of acetone/ethylene glycol utilizing and biofilm forming strains of bacteria. J Microbiol Methods 1997. [DOI: 10.1016/s0167-7012(97)00055-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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