1
|
Xu H, Xing H, Chen S, Wang Q, Dong L, Hu KD, Wang B, Xue J, Lu Y. Oak-inspired anti-biofouling shape-memory unidirectional scaffolds with stable solar water evaporation performance. NANOSCALE 2022; 14:7493-7501. [PMID: 35438102 DOI: 10.1039/d2nr00671e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Biomimetic porous materials have contributed to the enhancement of solar-driven evaporation rate in interfacial desalination and clean water production. However, due to the presence of numerous microbes in water environment, biofouling should occur inside porous materials to clog the channels for water transfer, resulting in obvious inhibition of the solar-driven evaporation efficacy in long-term use. To prevent and control biofouling in porous materials for solar-driven evaporation, a facile and environment-friendly design is required in real application. Oak wood possesses vertically aligned channels for transpiration and polyphenol compounds with antimicrobial activity. In this work, inspired by the oak wood, we developed an anti-biofouling shape-memory chitosan scaffold with unidirectional channels and tannic acid coating (oak-inspired scaffold). The shape-memory property facilitated rapid decoration with oak-inspired photothermal and anti-biofouling coating inside the scaffold, respectively, which also promotes the material durability by avoiding the external force-induced permanent structure failure. More importantly, the oak-inspired tannic acid coating not only prevented bacterial adhesion and colonization, but also inhibited fungal interference. They were subjected to a microbe-rich environment, and after 3 days, the evaporation rates of the untreated chitosan scaffolds were obviously decreased to 1.24, 1.16 and 1.19 kg m-2 h-1 for C. albicans, S. aureus and E. coli, respectively, which were only 65.6, 61.4 and 63.0% of original performance (1.89 kg m-2 h-1). In comparison, the oak-inspired scaffold exhibited a high solar-driven water evaporation rate after incubation in microbial suspensions (1.80, 1.70 and 1.75 kg m-2 h-1 for C. albicans, S. aureus and E. coli after 3 days) and lake water (1.74 kg m-2 h-1 after one month). The bioinspired anti-biofouling scaffolds maintain as high as 86.7-91.8% of the solar-driven water evaporation ability after exposure to a microbe-rich environment, which is conducive to develop a biomimetic long-term durable structure in water treatment.
Collapse
Affiliation(s)
- Hao Xu
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| | - Hanye Xing
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| | - Sheng Chen
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| | - Qian Wang
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| | - Liang Dong
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Kang-Di Hu
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| | - Bao Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, P. R. China
| | - Jingzhe Xue
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| | - Yang Lu
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, P. R. China.
| |
Collapse
|
2
|
Munir MT, Maneewan N, Pichon J, Gharbia M, Oumarou-Mahamane I, Baude J, Thorin C, Lepelletier D, Le Pape P, Eveillard M, Irle M, Pailhoriès H, Aviat F, Belloncle C, Federighi M, Dubreil L. Confocal spectral microscopy, a non-destructive approach to follow contamination and biofilm formation of mCherry Staphylococcus aureus on solid surfaces. Sci Rep 2021; 11:15574. [PMID: 34341378 PMCID: PMC8329050 DOI: 10.1038/s41598-021-94939-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 07/01/2021] [Indexed: 01/23/2023] Open
Abstract
Methods to test the safety of wood material for hygienically sensitive places are indirect, destructive and limited to incomplete microbial recovery via swabbing, brushing and elution-based techniques. Therefore, we chose mCherry Staphylococcus aureus as a model bacterium for solid and porous surface contamination. Confocal spectral laser microscope (CSLM) was employed to characterize and use the autofluorescence of Sessile oak (Quercus petraea), Douglas fir (Pseudotsuga menziesii) and poplar (Populus euramericana alba L.) wood discs cut into transversal (RT) and tangential (LT) planes. The red fluorescent area occupied by bacteria was differentiated from that of wood, which represented the bacterial quantification, survival and bio-distribution on surfaces from one hour to one week after inoculation. More bacteria were present near the surface on LT face wood as compared to RT and they persisted throughout the study period. Furthermore, this innovative methodology identified that S. aureus formed a dense biofilm on melamine but not on oak wood in similar inoculation and growth conditions. Conclusively, the endogenous fluorescence of materials and the model bacterium permitted direct quantification of surface contamination by using CSLM and it is a promising tool for hygienic safety evaluation.
Collapse
Affiliation(s)
| | | | - Julien Pichon
- UMR703 PAnTher APEX, INRAE/ONIRIS - La Chantrerie, 101 Route de Gachet, 44307, Nantes, France
| | | | | | - Jessica Baude
- CIRI, Inserm U1111, Lyon 1 University, ENS Lyon, CNRS UMR 5308, Lyon, France
| | | | | | - Patrice Le Pape
- EA 1155 IICiMed, IRS 2, University of Nantes, 44200, Nantes, France
| | - Matthieu Eveillard
- CRCINA, Inserm, University of Nantes, University of Angers, 44200, Angers, France.,Laboratory of Bacteriology-Hygiene, University Hospital of Angers, 49933, Angers, France
| | - Mark Irle
- LIMBHA, Ecole Supérieure du Bois, 44000, Nantes, France
| | - Hélène Pailhoriès
- Laboratory of Bacteriology-Hygiene, University Hospital of Angers, 49933, Angers, France.,HIFIH, UPRES EA3859, SFR 4208, University of Angers, Angers, France
| | - Florence Aviat
- Your ResearcH-Bio-Scientific, 44430, Le Landreau, France
| | | | | | - Laurence Dubreil
- UMR703 PAnTher APEX, INRAE/ONIRIS - La Chantrerie, 101 Route de Gachet, 44307, Nantes, France.
| |
Collapse
|
3
|
Survival of Bacterial Strains on Wood ( Quercus petraea) Compared to Polycarbonate, Aluminum and Stainless Steel. Antibiotics (Basel) 2020; 9:antibiotics9110804. [PMID: 33202723 PMCID: PMC7698295 DOI: 10.3390/antibiotics9110804] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/26/2020] [Accepted: 11/10/2020] [Indexed: 12/04/2022] Open
Abstract
Healthcare-associated infections (HAI) remain a burden in healthcare facilities, environmental surfaces being a potential reservoir for healthcare-associated pathogens. In this context, exploration of materials with potential antimicrobial activities represents a way forward for the future. Here, we explored the survival of four bacterial species commonly involved in HAI (Acinetobacter baumannii, Enterococcus faecalis, Klebsiella pneumoniae, Staphylococcus aureus), on oak versus three other materials (aluminum, polycarbonate, stainless steel). Twenty microliters of each bacterial suspension (approximatively 107 bacteria) were deposited on each material. Bacterial counts were measured by grinding and culturing on day 0, 1, 2, 6, 7 and 15. Analyses were performed in triplicate for each material and each time evaluated. It appeared that the bacteria viable count decreased rapidly on transversal and tangential oak compared with the other materials for all bacterial species. Furthermore, no difference was noticed between transversal and tangential oak. These results underline the potential for use of oak materials in healthcare facilities, a consideration that should be supported by further investigations.
Collapse
|