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Maddela NR, Abiodun AS, Zhang S, Prasad R. Biofouling in Membrane Bioreactors-Mitigation and Current Status: a Review. Appl Biochem Biotechnol 2023; 195:5643-5668. [PMID: 36418712 DOI: 10.1007/s12010-022-04262-3] [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] [Accepted: 11/08/2022] [Indexed: 11/27/2022]
Abstract
Biological fouling as termed biofouling is caused by varied living organisms and is difficult to eliminate from the environment thus becoming a major issue during membrane bioreactors. Biofouling in membrane bioreactors (MBRs) is a crucial problem in increasing liquid pressure due to reduced pore diameter, clogging of the membrane pores, and alteration of the chemical composition of the water which greatly limits the growth of MBRs. Thus, membrane biofouling and/or microbial biofilms is a hot research topic to improve the market competitiveness of the MBR technology. Though several antibiofouling strategies (addition of bioflocculant or sponge into MBRs) came to light, biological approaches are sustainable and more practicable. Among the biological approaches, quorum sensing-based biofouling control (so-called quorum quenching) is an interesting and promising tool in combating biofouling issues in the MBRs. Several review articles have been published in the area of membrane biofouling and mitigation approaches. However, there is no single source of information about biofouling and/or biofilm formation in different environmental settings and respective problems, antibiofilm strategies and current status, quorum quenching, and its futurity. Thus, the objectives of the present review were to provide latest insights on mechanism of membrane biofouling, quorum sensing molecules, biofilm-associated problems in different environmental setting and antibiofilm strategies, special emphasis on quorum quenching, and its futurity in the biofilm/biofouling control. We believe that these insights greatly help in the better understanding of biofouling and aid in the development of sustainable antibiofouling strategies.
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Affiliation(s)
- Naga Raju Maddela
- Departmento de Ciencias Biológicas, Facultad de Ciencias de la Salud, Universidad Técnica de Manabí, Portoviejo, Ecuador
- Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo, Ecuador
| | - Aransiola Sesan Abiodun
- Bioresources Development Centre, National Biotechnology Development Agency (NABDA), Ogbomoso, Nigeria
| | - Shaoqing Zhang
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari, Bihar, India.
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Cruz-Reina LJ, Flórez-Rojas JS, López GD, Herrera-Orozco I, Carazzone C, Sierra R. Obtention of fatty acids and phenolic compounds from Colombian cashew ( Anacardium occidentale) nut shells using pyrolysis: towards a sustainable biodiesel production. Heliyon 2023; 9:e18632. [PMID: 37576303 PMCID: PMC10415661 DOI: 10.1016/j.heliyon.2023.e18632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 07/14/2023] [Accepted: 07/24/2023] [Indexed: 08/15/2023] Open
Abstract
Sustainable management of non-edible agricultural residues of cashew nut production is a concern in Colombia. Therefore, this study aimed to study the fatty acid content of a pyrolytic liquid obtained from cashew nut shells (CNSs) from the Vichada region in Colombia. Transesterification of pyrolytic liquid was conducted to obtain biodiesel at the micro-scale as the first approach for this valorization route. Proximal analysis of samples was carried out using advanced analytical techniques (UHPLC-MS and CG-MS) whereas phenolic content and antioxidant activity were determined. The production yield of pyrolytic liquid was 69.15 ± 5.07% weight (wt.), at 550 °C and 2h of pyrolysis and the liquid was rich in fatty acids (∼70% wt.) and long-chain phenols (∼18% wt.). Among the phenolic compounds in liquid, mainly unsaturated C15:4 cardanol was identified (82.1 ± 5.5 mg/g), whereas the antioxidant activity of pyrolytic liquid was 0.714 ± 0.030 TE/g. Moreover, the biodiesel yield was 81% using catalyst sodium methoxide (12% v), and 50 °C and 26 min for the reaction. The obtained biodiesel in the hexane fraction was rich in methyl trans-8-octadecanoate (20.9 % wt.) and methyl palmitate (14.3 % wt.), being the representative compounds in the biodiesel. Therefore, the results indicated that thermal conversion of CNSs for obtaining biodiesel on a one-step process is a suitable strategy for the management of toxic and non-edible cashew residues. Finally, this is the first work of its kind that propose in detail the composition of pyrolytic liquid obtained from Colombian cashew nut residues under the proximate analysis approach and using advanced analytical techniques.
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Affiliation(s)
- Luis J. Cruz-Reina
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá D.C. 111711, Colombia
| | - Juan Sebastián Flórez-Rojas
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá D.C. 111711, Colombia
| | - Gerson-Dirceu López
- Laboratory of Advanced Analytical Techniques in Natural Products, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá D.C.111711, Colombia
- Faculty of Science and Humanities, Fundación Universidad de América, Avda. Circunvalar No. 20-53, Bogotá D.C., Colombia
| | - Israel Herrera-Orozco
- Energy Systems Analysis Unit, Energy Department, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Av. Complutense 40, 28040, Madrid, Spain
| | - Chiara Carazzone
- Laboratory of Advanced Analytical Techniques in Natural Products, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá D.C.111711, Colombia
| | - Rocío Sierra
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá D.C. 111711, Colombia
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Agro-byproduct-based hydrophobic polyurethane films/coatings: synthesis, characterization and electrochemical impedance spectroscopic analysis. IRANIAN POLYMER JOURNAL 2022. [DOI: 10.1007/s13726-022-01104-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dame-Teixeira N, El-Gendy R, Monici Silva I, Holanda CA, de Oliveira AS, Romeiro LAS, Do T. Sustainable multifunctional phenolic lipids as potential therapeutics in Dentistry. Sci Rep 2022; 12:9299. [PMID: 35662265 PMCID: PMC9166758 DOI: 10.1038/s41598-022-13292-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/23/2022] [Indexed: 11/09/2022] Open
Abstract
Phenolic lipids components of the cashew nutshell liquid (CNSL) have molecular structures capable of chemical signalling that regulate gene expression, metabolism and inflammation. This study sets out to assess how CNSL derivatives impact oral bacteria, from an antibacterial and anti-collagenolytic perspective, as well as its biocompatibility with dental pulp stem cells. Two hemi-synthetic saturated CNSL derivative compounds were selected (LDT11-Anacardic Acids-derivative and LDT409-cardanol-derivative). Bacteriostatic activity was tested against Streptococcus mutans and Veillonella parvula. Antimicrobial capacity against preformed S. mutans biofilms was investigated using a collagen-coated Calgary Biofilm Device and confocal microscopy. Clostridium histolyticum, P. gingivalis and S. mutans biofilms were used to assess anti-collagenolytic activity. Biocompatibility with human dental pulp stromal cells (HDPSCs) was investigated (MTT for viability proportion, LDH assays for cell death rate). LDTs inhibited the bacterial growth, as well as partially inhibited bacterial collagenases in concentrations higher than 5 μg/mL. Dose–response rates of biofilm cell death was observed (LDT11 at 20, 50, 100 μg/mL = 1.0 ± 0.4, 0.7 ± 0.3, 0.6 ± 0.03, respectively). Maximum cytotoxicity was 30%. After 1 week, LDT409 had no HDPSCs death. HDPSCs viability was decreased after 24 h of treatment with LDT11 and LDT409, but recovered at 72 h and showed a massive increase in viability and proliferation after 1 week. LDTs treatment was associated with odontoblast-like morphology. In conclusion, LDT11 multifunctionality and biocompatibility, stimulating dental pulp stem cells proliferation and differentiation, indicates a potential as a bio-based dental material for regenerative Dentistry. Its potential as a bacterial collagenases inhibitor to reduce collagen degradation in root/dentinal caries can be further explored.
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Affiliation(s)
- Naile Dame-Teixeira
- Department of Dentistry, School of Health Sciences, University of Brasilia, Campus Universitário Darcy Ribeiro - UnB, Federal District, Asa Norte, Brasilia, DF, 70910-900, Brazil. .,Division of Oral Biology, School of Dentistry, University of Leeds, Leeds, LS9 7TF, UK.
| | - Reem El-Gendy
- Division of Oral Biology, School of Dentistry, University of Leeds, Leeds, LS9 7TF, UK.,Department of Oral Pathology, Faculty of Dentistry, Suez Canal University, Ismailia, Egypt
| | - Isabela Monici Silva
- Department of Dentistry, School of Health Sciences, University of Brasilia, Campus Universitário Darcy Ribeiro - UnB, Federal District, Asa Norte, Brasilia, DF, 70910-900, Brazil
| | - Cleonice Andrade Holanda
- Nucleus of Tropical Medicine, School of Medicine, University of Brasilia, Federal District, Brasilia, 70910-900, Brazil
| | - Andressa Souza de Oliveira
- Department of Pharmacy, School of Health Sciences, University of Brasilia, Federal District, Brasilia, 70910-900, Brazil
| | - Luiz Antonio Soares Romeiro
- Department of Pharmacy, School of Health Sciences, University of Brasilia, Federal District, Brasilia, 70910-900, Brazil.,Nucleus of Tropical Medicine, School of Medicine, University of Brasilia, Federal District, Brasilia, 70910-900, Brazil
| | - Thuy Do
- Division of Oral Biology, School of Dentistry, University of Leeds, Leeds, LS9 7TF, UK
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