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Soriano-Jerez Y, Gallardo-Rodríguez JJ, López-Rosales L, García-Camacho F, Bressy C, Molina-Grima E, Cerón-García MC. Preventing biofouling in microalgal photobioreactors. BIORESOURCE TECHNOLOGY 2024:131125. [PMID: 39025371 DOI: 10.1016/j.biortech.2024.131125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/15/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Photobioreactors (PBRs) are used to grow the light-requiring microalgae in diverse commercial processes. Often, they are operated as continuous culture over months period. However, with time, biofouling layer develops on the inner surfaces of their walls. The fouling layer formation deteriorates the PBR performance as foulants reduce light penetration in it. Light is essential for photosynthetic cultures, and a deterioration in lighting adversely impacts algae growth and biomass productivity. Fouling requires a frequent shutdown to clean the PBR and add to the environmental impact of the operation by generating many wastewaters contaminated with the cleaning chemicals. Antibiofouling coatings could be used to modify the surfaces of existing and future PBRs. Therefore, transparent and non-toxic fouling-release coatings, produced using hydrogel technology, could transform the existing PBRs into efficient and enduring microalgae culture systems, requiring only the application of the coating to the inner walls, without additional investments in new PBRs.
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Affiliation(s)
- Y Soriano-Jerez
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - J J Gallardo-Rodríguez
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - L López-Rosales
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - F García-Camacho
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - C Bressy
- Université de Toulon, MAPIEM, Toulon, France
| | - E Molina-Grima
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain.
| | - M C Cerón-García
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
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2
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Zhu W, Li B, Liu J, Sun S, Zhang Y, Zhang D, Li C, Sun T, Qin H, Shi J, Shi Z. A Versatile Approach for the Synthesis of Antimicrobial Polymer Brushes on Natural Rubber/Graphene Oxide Composite Films via Surface-Initiated Atom-Transfer Radical Polymerization. Molecules 2024; 29:913. [PMID: 38398663 PMCID: PMC10891501 DOI: 10.3390/molecules29040913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/07/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
A simple strategy was adopted for the preparation of an antimicrobial natural rubber/graphene oxide (NR/GO) composite film modified through the use of zwitterionic polymer brushes. An NR/GO composite film with antibacterial properties was prepared using a water-based solution-casting method. The composited GO was dispersed uniformly in the NR matrix and compensated for mechanical loss in the process of modification. Based on the high bromination activity of α-H in the structure of cis-polyisoprene, the composite films were brominated on the surface through the use of N-bromosuccinimide (NBS) under the irradiation of a 40 W tungsten lamp. Polymerization was carried out on the brominated films using sulfobetaine methacrylate (SBMA) as a monomer via surface-initiated atom transfer radical polymerization (SI-ATRP). The NR/GO composite films modified using polymer brushes (PSBMAs) exhibited 99.99% antimicrobial activity for resistance to Escherichia coli and Staphylococcus aureus. A novel polymer modification strategy for NR composite materials was established effectively, and the enhanced antimicrobial properties expand the application prospects in the medical field.
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Affiliation(s)
- Wenya Zhu
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Bangsen Li
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Jinrui Liu
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Shishu Sun
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Yan Zhang
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Dashuai Zhang
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Chen Li
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Tianyi Sun
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Huaide Qin
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China;
| | - Jianjun Shi
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
| | - Zaifeng Shi
- Collage of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (W.Z.); (B.L.); (J.L.); (Y.Z.); (C.L.); (T.S.)
- Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou 571158, China
- Haikou Key Laboratory of Water Environmental Pollution Control, Haikou 571158, China
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3
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Soriano-Jerez Y, García-Abad L, Cerón-García MDC, Gallardo-Rodríguez JJ, Bressy C, García-Camacho F, Molina-Grima E. Long-lasting biofouling formation on transparent fouling-release coatings for the construction of efficient closed photobioreactors. BIOFOULING 2023; 39:483-501. [PMID: 37394974 DOI: 10.1080/08927014.2023.2228208] [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: 12/29/2022] [Revised: 06/07/2023] [Accepted: 06/17/2023] [Indexed: 07/04/2023]
Abstract
In order to build an efficient closed-photobioreactor (PBR) in which biofouling formation is avoided, a non-toxic coating with high transparency is required, which can be applied to the interior surface of the PBR walls. Nowadays, amphiphilic copolymers are being used to inhibit microorganism adhesion, so poly(dimethylsiloxane)-based coatings mixed with poly(ethylene glycol)-based copolymers could be a good option. The 7 poly(dimethylsiloxane)-based coatings tested in this work contained 4% w/w of poly(ethylene glycol)-based copolymers. All were a good alternative to glass because they presented lower cell adhesion. However, the DBE-311 copolymer proved the best option due to its very low cell adhesion and high transmittance. Furthermore, XDLVO theory indicates that these coatings should have no cell adhesion at time 0 since they create a very high-energy barrier that microalgae cells cannot overcome. Nevertheless, this theory also shows that their surface properties change over time, making cell adhesion possible on all coatings after 8 months of immersion. The theory is useful in explaining the interaction forces between the surface and microalgae cells at any moment in time, but it should be complemented with models to predict the conditioning film formation and the contribution of the PBR's fluid dynamics over time.
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Affiliation(s)
- Yolanda Soriano-Jerez
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - Lucía García-Abad
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | | | | | - Christine Bressy
- Laboratoire MAPIEM, U.R. 4323, SeaTech Ecole d'Ingénieur, Université de Toulon, La Valette-du-Var, France
| | - Francisco García-Camacho
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - Emilio Molina-Grima
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, Almería, Spain
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Burmeister N, Vollstedt C, Kröger C, Friedrich T, Scharnagl N, Rohnke M, Zorn E, Wicha SG, Streit WR, Maison W. Zwitterionic surface modification of polyethylene via atmospheric plasma-induced polymerization of (vinylbenzyl-)sulfobetaine and evaluation of antifouling properties. Colloids Surf B Biointerfaces 2023; 224:113195. [PMID: 36758459 DOI: 10.1016/j.colsurfb.2023.113195] [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: 11/18/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/05/2023]
Abstract
Zwitterionic polymer brushes were grafted from bulk polyethylene (PE) by air plasma activation of the PE surface followed by radical polymerization of the zwitterionic styrene derivative (vinylbenzyl)sulfobetaine (VBSB). Successful formation of dense poly-(VBSB)-brush layers was confirmed by goniometry, IR spectroscopy, XPS and ToF-SIMS analysis. The resulting zwitterionic layers are about 50-100 nm thick and cause extremely low contact angles of 10° (water) on the material. Correspondingly we determined a high density of > 1.0 × 1016 solvent accessible zwitterions/cm2 (corresponding to 2,0 *10-8 mol/cm2) by a UV-based ion-exchange assay with crystal violet. The elemental composition as determined by XPS and characteristic absorption bands in the IR spectra confirmed the presence of zwitterionic sulfobetaine polymer brushes. The antifouling properties of the resulting materials were evaluated in a bacterial adhesion test against gram-positive bacteria (S. aureus). We observed significantly reduced cellular adhesion of the zwitterionic material compared to pristine PE. These microbiological tests were complemented by tests in natural seawater. During a test period of 21 days, confocal microscopy revealed excellent antifouling properties and confirmed the operating antifouling mechanism. The procedure reported herein allows the efficient surface modification of bulk PE with zwitterionic sulfobetaine polymer brushes via a scalable approach. The resulting modified PE retains important properties of the bulk material and has excellent and durable antifouling properties.
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Affiliation(s)
- Nils Burmeister
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Christel Vollstedt
- Universität Hamburg, Department of Microbiology and Biotechnology, Ohnhorststrasse 18, 22609 Hamburg, Germany
| | - Cathrin Kröger
- Universität Hamburg, Department of Microbiology and Biotechnology, Ohnhorststrasse 18, 22609 Hamburg, Germany
| | - Timo Friedrich
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Nico Scharnagl
- Helmholtz-Zentrum Hereon GmbH, Institute of Surface Science, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Marcus Rohnke
- Justus-Liebig-Universität Gießen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Eilika Zorn
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Sebastian G Wicha
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Wolfgang R Streit
- Universität Hamburg, Department of Microbiology and Biotechnology, Ohnhorststrasse 18, 22609 Hamburg, Germany
| | - Wolfgang Maison
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany.
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5
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Reduction of algal wall-growth biofilm for the cultivation of Chlorococcum in photobioreactors using commercial surfactants and floating plastic media. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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García-Abad L, Soriano-Jerez Y, Cerón-García MDC, Muñoz-Bonilla A, Fernández-García M, García-Camacho F, Molina-Grima E. Adsorption Analysis of Exopolymeric Substances as a Tool for the Materials Selection of Photobioreactors Manufacture. Int J Mol Sci 2022; 23:ijms232213924. [PMID: 36430401 PMCID: PMC9697444 DOI: 10.3390/ijms232213924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
An improved method that allows the robust characterization of surfaces is necessary to accurately predict the biofouling formation on construction materials of photobioreactors (PBR). Exopolymeric substances (EPS), such as proteins and polysaccharides, have been demonstrated to present a similar behavior to cells in terms of surface adhesion. In this work, these EPS were used to optimize parameters, such as EPS concentration or adsorption time, to evaluate accurately the adsorption capacity of surfaces and, with it, predict the biofouling formation in contact with microalgae cultures. Once the method was optimized, the characterization of seven commercial polymeric surfaces was submitted to different abrasive particles sizes, which modified the roughness of the samples, as well as protein and polysaccharide lawns, which were prepared and carried out in order to evaluate the characteristics of these substances. The characterization consisted of the determination of surface free energy, water adhesion tension, and critical tension determined from the measurement of the contact angle, roughness, surface zeta potential, and the EPS adhesion capacity of each material. This will be useful to understand the behavior of the surface in the function of its characteristics and the interaction with the solutions of EPS, concluding that the hydrophobic and smooth surfaces present good anti-biofouling characteristics.
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Affiliation(s)
- Lucía García-Abad
- Chemical Engineering Department, University of Almería, 04120 Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, 04120 Almería, Spain
| | - Yolanda Soriano-Jerez
- Chemical Engineering Department, University of Almería, 04120 Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, 04120 Almería, Spain
| | - María del Carmen Cerón-García
- Chemical Engineering Department, University of Almería, 04120 Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, 04120 Almería, Spain
- Correspondence: (M.d.C.C.-G.); (M.F.-G.)
| | | | - Marta Fernández-García
- Institute of Polymer Science and Technology (ICTP-CSIC), 28006 Madrid, Spain
- Correspondence: (M.d.C.C.-G.); (M.F.-G.)
| | - Francisco García-Camacho
- Chemical Engineering Department, University of Almería, 04120 Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, 04120 Almería, Spain
| | - Emilio Molina-Grima
- Chemical Engineering Department, University of Almería, 04120 Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, 04120 Almería, Spain
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7
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García-Abad L, López-Rosales L, Cerón-García MDC, Fernández-García M, García-Camacho F, Molina-Grima E. Influence of abiotic conditions on the biofouling formation of flagellated microalgae culture. BIOFOULING 2022; 38:507-520. [PMID: 35729852 DOI: 10.1080/08927014.2022.2089564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 06/03/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
This work analyses the adhesion of flagellated microalgae to seven surfaces that have different water adhesion tension characteristics. Chlamydomonas reinhardtii and Isochrysis galbana, were cultivated in batch and fed-batch mode at four nitrogen/phosphorus (N/P) ratios (from 1.29 to 70) and subjected to four irradiance levels (50, 100, 200 and 400 µE·s-1·m-2) at 23 °C. Cell adhesion was greater in C. reinhardtii and a higher biomass concentration was obtained for this strain, reaching 2 g·L-1 compared to 1 g·L-1 for I. galbana. The adhesion of cells and exopolymeric substances was measured upon the batch and the first fed-batch reaching the stationary growth phase, observing a direct correlation between them and inversely to biomass generation in the cultures. The protein adhesion data for the different materials are comparable to those for cell adhesion coinciding with minimums of Baier's theory and Vogler. It is observed displacements in the curves as a function of the irradiance level.
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Affiliation(s)
- Lucía García-Abad
- Chemical Engineering Department, University of Almería, Almería, Spain
| | - Lorenzo López-Rosales
- Chemical Engineering Department, University of Almería, Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, Almería, Spain
| | - María Del Carmen Cerón-García
- Chemical Engineering Department, University of Almería, Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, Almería, Spain
| | - Marta Fernández-García
- Chemistry and Properties of Polimeric Materials Department, Institute of Polymer Science and Technology (ICT P-CSIC), Madrid, Spain
| | - Francisco García-Camacho
- Chemical Engineering Department, University of Almería, Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, Almería, Spain
| | - Emilio Molina-Grima
- Chemical Engineering Department, University of Almería, Almería, Spain
- Research Center in Agrifood Biotechnology (CIAMBITAL), University of Almería, Almería, Spain
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Mushtaq S, Abbas MA, Nasir H, Mahmood A, Iqbal M, Janjua HA, Malik Q, Ahmad NM. Amphiphilic copolymers of dimethyl aminoethyl methacrylate and methyl methacrylate with controlled hydrophilicity for antialgal activity. J Appl Polym Sci 2022. [DOI: 10.1002/app.51578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shehla Mushtaq
- Department of Chemistry, School of Natural Sciences National University of Sciences and Technology (NUST) Islamabad Pakistan
| | - Muhammad Asad Abbas
- Polymer Research Lab, School of Chemical and Materials Engineering (SCME) National University of Sciences and Technology (NUST) Islamabad Pakistan
| | - Habib Nasir
- Department of Chemistry, School of Natural Sciences National University of Sciences and Technology (NUST) Islamabad Pakistan
| | - Azhar Mahmood
- Department of Chemistry, School of Natural Sciences National University of Sciences and Technology (NUST) Islamabad Pakistan
| | - Mudassir Iqbal
- Department of Chemistry, School of Natural Sciences National University of Sciences and Technology (NUST) Islamabad Pakistan
| | - Hussnain A. Janjua
- Department of Industrial Biotechnology, Atta‐Ur‐Rahman School of Applied Biosciences (ASAB) National University of Sciences and Technology (NUST) Islamabad Pakistan
| | - Qamar Malik
- ABBOT Energy and Environment Inc., Alastair Ross Technology Center Calgary Alberta Canada
| | - Nasir M. Ahmad
- Polymer Research Lab, School of Chemical and Materials Engineering (SCME) National University of Sciences and Technology (NUST) Islamabad Pakistan
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9
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Talluri SNL, Winter RM, Salem DR. Nanoscale characteristics of conditioning film development on photobioreactor materials: influence on the initial adhesion and biofilm formation by a cyanobacterium. BIOFOULING 2021; 37:777-790. [PMID: 34455869 DOI: 10.1080/08927014.2021.1971201] [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: 03/21/2021] [Revised: 08/10/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Adsorption of conditioning films on a solid surface is the first step in the development of biofilms. With the goal of understanding the preliminary adhesion mechanisms of cyanobacteria on photobioreactor (PBR) materials to prevent biofouling, the physical changes occurring on PBR materials were investigated during the initial adhesion and biofilm formation by Anabaena sp. PCC 7120, a cyanobacterium that is genetically modified to produce linalool. Atomic force microscopy (AFM) revealed that the conditioning film deposition was in the form of spike-like structures on all the materials except PVC. The average heights (in the range 9 - 16 nm) of the conditioning films deposited on glass, PMMA, PC and HDPE were 11 to 20 times higher than on PVC at 96 h. The time dependent change in thickness of conditioning films correlated well with Anabaena cell attachment to the PBR materials. The rapid and significant colonization of Anabaena on glass within 48 h was consistent with the increase in thickness of the conditioning film within this time period. Lack of the conditioning film spike structures and no change in thickness of the conditioning films with time on the PVC together with comparatively delayed cell attachment and conditioning-film protein deposition on this material, indicated that the nanoscale spike structures on the other PBR materials may be accelerating the cell attachment process but are not a prerequisite for cell attachment. These results suggest that PVC should be explored further as an antifouling material for photobioreactors. The thickness of the conditioning films on glass measured by a scratch and scan method was in good agreement with the thickness values measured by an adhesive tape method, indicating that both these methods can be used for fast and reliable AFM thickness determination of bacterial conditioning films.
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Affiliation(s)
- Suvarna N L Talluri
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composite and Nanocomposite Advanced Manufacturing - Biomaterials Center (CNAM-Bio), South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - Robb M Winter
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composites and Polymer Engineering Laboratory, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - David R Salem
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composites and Polymer Engineering Laboratory, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composite and Nanocomposite Advanced Manufacturing - Biomaterials Center (CNAM-Bio), South Dakota School of Mines and Technology, Rapid City, SD, USA
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10
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Soriano-Jerez Y, López-Rosales L, Cerón-García MC, Sánchez-Mirón A, Gallardo-Rodríguez JJ, García-Camacho F, Molina-Grima E. Long-term biofouling formation mediated by extracellular proteins in Nannochloropsis gaditana microalga cultures at different medium N/P ratios. Biotechnol Bioeng 2020; 118:1152-1165. [PMID: 33236769 DOI: 10.1002/bit.27632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 11/14/2020] [Accepted: 11/19/2020] [Indexed: 12/20/2022]
Abstract
Biofouling represents an important limitation in photobioreactor cultures. The biofouling propensity of different materials (polystyrene, borosilicate glass, polymethyl methacrylate, and polyethylene terephthalate glycol-modified) and coatings (two spray-applied and nanoparticle-based superhydrophobic coatings and a hydrogel-based fouling release coating) was evaluated by means of a short-term protein test, using bovine serum albumin (BSA) as a model protein, and by the long-term culture of the marine microalga Nannochloropsis gaditana under practical conditions. The results from both methods were similar, confirming that the BSA test predicts microalgal biofouling on surfaces exposed to microalgae cultures whose cells secrete macromolecules, such as proteins, with a high capacity for forming a conditioning film before cell adhesion. The hydrogel-based coating showed significantly reduced BSA and N. gaditana adhesion, whereas the other surfaces failed to control biofouling. Microalgal biofouling was associated with an increased concentration of sticky extracellular proteins at low N/P ratios (below 15).
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Affiliation(s)
- Y Soriano-Jerez
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - L López-Rosales
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - M C Cerón-García
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - A Sánchez-Mirón
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - J J Gallardo-Rodríguez
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - F García-Camacho
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
| | - E Molina-Grima
- Department of Chemical Engineering, Research Centre CIAIMBITAL, University of Almería, Almería, Spain
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11
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Hasan A, Lee K, Tewari K, Pandey LM, Messersmith PB, Faulds K, Maclean M, Lau KHA. Surface Design for Immobilization of an Antimicrobial Peptide Mimic for Efficient Anti-Biofouling. Chemistry 2020; 26:5789-5793. [PMID: 32059067 PMCID: PMC7318250 DOI: 10.1002/chem.202000746] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Indexed: 11/11/2022]
Abstract
Microbial surface attachment negatively impacts a wide range of devices from water purification membranes to biomedical implants. Mimics of antimicrobial peptides (AMPs) constituted from poly(N-substituted glycine) "peptoids" are of great interest as they resist proteolysis and can inhibit a wide spectrum of microbes. We investigate how terminal modification of a peptoid AMP-mimic and its surface immobilization affect antimicrobial activity. We also demonstrate a convenient surface modification strategy for enabling alkyne-azide "click" coupling on amino-functionalized surfaces. Our results verified that the N- and C-terminal peptoid structures are not required for antimicrobial activity. Moreover, our peptoid immobilization density and choice of PEG tether resulted in a "volumetric" spatial separation between AMPs that, compared to past studies, enabled the highest AMP surface activity relative to bacterial attachment. Our analysis suggests the importance of spatial flexibility for membrane activity and that AMP separation may be a controlling parameter for optimizing surface anti-biofouling.
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Affiliation(s)
- Abshar Hasan
- Bio-Interface & Environmental Engineering LabDepartment of Biosciences and BioengineeringIndian Institute of Technology GuwahatiAssam781039India
- Department of Pure & Applied ChemistryUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Kyueui Lee
- Department of BioengineeringUniversity of California, BerkeleyBerkeleyUSA
| | - Kunal Tewari
- Department of Pure & Applied ChemistryUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Lalit M. Pandey
- Bio-Interface & Environmental Engineering LabDepartment of Biosciences and BioengineeringIndian Institute of Technology GuwahatiAssam781039India
| | - Phillip B. Messersmith
- 1. Department of Bioengineering2. Department of Materials Science and EngineeringUniversity of California, BerkeleyBerkeleyUSA
- Materials Sciences DivisionLawrence Berkeley National LaboratoryBerkeleyUSA
| | - Karen Faulds
- Department of Pure & Applied ChemistryUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Michelle Maclean
- 1.Department of Electronic & Electrical Engineering2.Department of Biomedical EngineeringUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - King Hang Aaron Lau
- Department of Pure & Applied ChemistryUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
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12
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Talluri SNL, Winter RM, Salem DR. Conditioning film formation and its influence on the initial adhesion and biofilm formation by a cyanobacterium on photobioreactor materials. BIOFOULING 2020; 36:183-199. [PMID: 32281883 DOI: 10.1080/08927014.2020.1748186] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 03/16/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
Although cyanobacteria are a common group of microorganisms well-suited to utilization in photobioreactors (PBRs), studies of cyanobacteria fouling and its prevention are scarce. Using a cyanobacterium, Anabaena sp. PCC 7120, which had been genetically modified to enhance linalool production, the formation of conditioning films and the effects of these on the physico-chemical surface properties of various PBR materials during initial adhesion and biofilm formation were investigated. The adhesion assay revealed that the overall attachment of Anabaena was substratum dependent and no correlation between the hydrophobicity/roughness of clean material and cell attachment was found. Surface hydrophilicity/hydrophobicity of all the materials changed within 12 h due to formation of conditioning films. ATR-FTIR spectroscopy revealed that the fractional change in protein deposition between 12 to 96 h was consistent with Anabaena cell attachment but polysaccharide deposition was material specific and did not correlate with cell attachment on the PBR materials. Also, the delay in conditioning film proteins on PVC and PTFE indicated that components other than proteins may be responsible for the decrease in contact angles on these surfaces within 12 h. This indicates the important role of the chemical nature of adsorbed conditioning films in determining the initial attachment of Anabaena to PBR materials. The lower rate of attachment of Anabaena on the hydrophilic surfaces (glass and PMMA) between 72 h to 96 h (regime 3) showed that these surfaces could potentially have low fouling characteristics at extended time scales and should be considered for further research.
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Affiliation(s)
- Suvarna N L Talluri
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - Robb M Winter
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - David R Salem
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composites and Polymer Engineering Laboratory, South Dakota School of Mines and Technology, Rapid City, SD, USA
- Composite and Nanocomposite Advanced Manufacturing - Biomaterials Center (CNAM-Bio), South Dakota School of Mines and Technology, Rapid City, SD, USA
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13
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Ishihara K. Blood-Compatible Surfaces with Phosphorylcholine-Based Polymers for Cardiovascular Medical Devices. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1778-1787. [PMID: 30056709 DOI: 10.1021/acs.langmuir.8b01565] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For the acquisition of blood-compatible materials, various hydrophilic polymers for surface modification have been examined. Among them, polymers with a representative phospholipid polar group, the phosphorylcholine (PC) group, are a successful example. These polymers were designed from inspiration of the cell membrane surface and provide protein adsorption resistance even following contact with plasma. This important property is based on the unique hydration state of water molecules surrounding hydrated polymer; in other words, water molecules weakly interact with the polymers and maintain their favorable cluster structure through hydrogen bonding. These polymers are not only hydrophilic, but also electrically neutral, important characteristics which make hydrogen bonding with water molecules less likely to occur and avoid hydrophobic interactions. Phosphorylcholine groups and other zwitterionic structures are significant as hydrophilic functional groups meeting these important requirements. In this review, blood compatibility of a polymer having a PC group is introduced in relation to its hydration structure, followed by a description of the applications of this polymer to cardiovascular medical devices.
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Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
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