1
|
Ameen F, Alsarraf MJ, Abalkhail T, Stephenson SL. Tannery effluent treatments with mangrove fungi, grass root biomass, and biochar. World J Microbiol Biotechnol 2024; 40:249. [PMID: 38907753 DOI: 10.1007/s11274-024-04055-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 06/14/2024] [Indexed: 06/24/2024]
Abstract
Tannery effluents contain high amounts of polluting chemicals, such as salts and heavy metals released often to surface waters. New economic and eco-friendly purification methods are needed. Two adsorbing materials and five salt-tolerant fungal isolates from mangrove habitat were studied. Purification experiments were carried out using the pollutant adsorbents biochar and the biomass of vetiver grass (Chrysopogon zizanioides) roots and the fungi Cladosporium cladosporioides, Phomopsis glabrae, Aspergillus niger, Emericellopsis sp., and Scopulariopsis sp., which were isolated from mangrove sediment. They efficacy to reduce pollutants was studied in different combinations. Salinity, turbidity, total dissolved solids, total suspended solids, phenols, nitrogen, ammonia. Biological and chemical oxygen demand (BOD, COD) and several heavy metals were measured. The adsorbents were efficient reducing the pollutants to 15-50% of the original. The efficiency of the combination of biochar and roots was generally at the same level as the adsorbents alone. Some pollutants such as turbidity, COD and ammonium were reduced slightly more by the combination than the adsorbents alone. From all 14 treatments, Emericellopsis sp. with biochar and roots appeared to be the most efficient reducing pollutants to < 10-30%. BOD and COD were reduced to ca 5% of the original. The treatment was efficient in reducing also heavy metals (As, Cd, Cr, Mn Pb, Zn). The fungal species originating from the environment instead of the strains present in the tannery effluent reduced pollutants remarkably and the adsorbents improved the reduction efficiency. However, the method needs development for effluents with high pollutant concentrations to fulfil the environmental regulations.
Collapse
Affiliation(s)
- Fuad Ameen
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Mohammad J Alsarraf
- Department of Science, College of Basic Education, The Public Authority of Applied Education and Training (PAAET), Kuwait
| | - Tarad Abalkhail
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Steven L Stephenson
- Department Biological Sciences, University of Arkansas, Fayetteville, AR, USA
| |
Collapse
|
2
|
Ghezzi D, Graziani G, Cappelletti M, Fadeeva IV, Montesissa M, Sassoni E, Borciani G, Barbaro K, Boi M, Baldini N, Rau JV. New strontium-based coatings show activity against pathogenic bacteria in spine infection. Front Bioeng Biotechnol 2024; 12:1347811. [PMID: 38665815 PMCID: PMC11044685 DOI: 10.3389/fbioe.2024.1347811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Infections of implants and prostheses represent relevant complications associated with the implantation of biomedical devices in spine surgery. Indeed, due to the length of the surgical procedures and the need to implant invasive devices, infections have high incidence, interfere with osseointegration, and are becoming increasingly difficult to threat with common therapies due to the acquisition of antibiotic resistance genes by pathogenic bacteria. The application of metal-substituted tricalcium phosphate coatings onto the biomedical devices is a promising strategy to simultaneously prevent bacterial infections and promote osseointegration/osseoinduction. Strontium-substituted tricalcium phosphate (Sr-TCP) is known to be an encouraging formulation with osseoinductive properties, but its antimicrobial potential is still unexplored. To this end, novel Sr-TCP coatings were manufactured by Ionized Jet Deposition technology and characterized for their physiochemical and morphological properties, cytotoxicity, and bioactivity against Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538P human pathogenic strains. The coatings are nanostructured, as they are composed by aggregates with diameters from 90 nm up to 1 μm, and their morphology depends significantly on the deposition time. The Sr-TCP coatings did not exhibit any cytotoxic effects on human cell lines and provided an inhibitory effect on the planktonic growth of E. coli and S. aureus strains after 8 h of incubation. Furthermore, bacterial adhesion (after 4 h of exposure) and biofilm formation (after 24 h of cell growth) were significantly reduced when the strains were cultured on Sr-TCP compared to tricalcium phosphate only coatings. On Sr-TCP coatings, E. coli and S. aureus cells lost their organization in a biofilm-like structure and showed morphological alterations due to the toxic effect of the metal. These results demonstrate the stability and anti-adhesion/antibiofilm properties of IJD-manufactured Sr-TCP coatings, which represent potential candidates for future applications to prevent prostheses infections and to promote osteointegration/osteoinduction.
Collapse
Affiliation(s)
- Daniele Ghezzi
- University of Bologna, Department of Pharmacy and Biotechnology, Bologna, Italy
| | - Gabriela Graziani
- IRCCS Istituto Ortopedico Rizzoli, Biomedical Science and Technologies and Nanobiotechnology Lab, Bologna, Italy
| | - Martina Cappelletti
- University of Bologna, Department of Pharmacy and Biotechnology, Bologna, Italy
| | - Inna V. Fadeeva
- AA Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Matteo Montesissa
- University of Bologna, Department of Biomedical and Neuromotor Sciences, Bologna, Italy
| | - Enrico Sassoni
- University of Bologna, Department of Civil, Chemical, Environmental and Materials Engineering, Bologna, Italy
| | - Giorgia Borciani
- IRCCS Istituto Ortopedico Rizzoli, Biomedical Science and Technologies and Nanobiotechnology Lab, Bologna, Italy
| | | | - Marco Boi
- IRCCS Istituto Ortopedico Rizzoli, Biomedical Science and Technologies and Nanobiotechnology Lab, Bologna, Italy
| | - Nicola Baldini
- IRCCS Istituto Ortopedico Rizzoli, Biomedical Science and Technologies and Nanobiotechnology Lab, Bologna, Italy
- University of Bologna, Department of Biomedical and Neuromotor Sciences, Bologna, Italy
| | - Julietta V. Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome, Italy
| |
Collapse
|
3
|
Kassem A, Abbas L, Coutinho O, Opara S, Najaf H, Kasperek D, Pokhrel K, Li X, Tiquia-Arashiro S. Applications of Fourier Transform-Infrared spectroscopy in microbial cell biology and environmental microbiology: advances, challenges, and future perspectives. Front Microbiol 2023; 14:1304081. [PMID: 38075889 PMCID: PMC10703385 DOI: 10.3389/fmicb.2023.1304081] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 11/03/2023] [Indexed: 01/02/2024] Open
Abstract
Microorganisms play pivotal roles in shaping ecosystems and biogeochemical cycles. Their intricate interactions involve complex biochemical processes. Fourier Transform-Infrared (FT-IR) spectroscopy is a powerful tool for monitoring these interactions, revealing microorganism composition and responses to the environment. This review explores the diversity of applications of FT-IR spectroscopy within the field of microbiology, highlighting its specific utility in microbial cell biology and environmental microbiology. It emphasizes key applications such as microbial identification, process monitoring, cell wall analysis, biofilm examination, stress response assessment, and environmental interaction investigation, showcasing the crucial role of FT-IR in advancing our understanding of microbial systems. Furthermore, we address challenges including sample complexity, data interpretation nuances, and the need for integration with complementary techniques. Future prospects for FT-IR in environmental microbiology include a wide range of transformative applications and advancements. These include the development of comprehensive and standardized FT-IR libraries for precise microbial identification, the integration of advanced analytical techniques, the adoption of high-throughput and single-cell analysis, real-time environmental monitoring using portable FT-IR systems and the incorporation of FT-IR data into ecological modeling for predictive insights into microbial responses to environmental changes. These innovative avenues promise to significantly advance our understanding of microorganisms and their complex interactions within various ecosystems.
Collapse
Affiliation(s)
- Amin Kassem
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Lana Abbas
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Oliver Coutinho
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Somie Opara
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Hawraa Najaf
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Diana Kasperek
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Keshav Pokhrel
- Department of Mathematics and Statistics, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Xiaohua Li
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| | - Sonia Tiquia-Arashiro
- Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, MI, United States
| |
Collapse
|