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Vinturelle R, Cabral TDS, Oliveira PCD, Salles JP, Faria JV, Teixeira GP, Faria RX, Veloso MC, Romeiro GA, Chagas ED. Slow pyrolysis of Terminalia catappa L. municipal solid waste and the use of the aqueous fraction produced for bovine mastitis control. Biochem Biophys Rep 2024; 38:101704. [PMID: 38623537 PMCID: PMC11016915 DOI: 10.1016/j.bbrep.2024.101704] [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: 02/01/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/17/2024] Open
Abstract
The Terminalia catappa L. tree is an ornamental and shade tree producter of a large amount of biological waste sent to landfills. Therefore, this plant constitutes so-called municipal solid wood waste (MSWW), which causes undesirable impacts on the environment, such as the generation of methane through the action of microorganisms. Sustainable solutions for the proper use and disposal of MSWW are a topic that has assumed great relevance at present due to the high quantities of MSWW generated worldwide. Pyrolysis constitutes an attractive alternative for the sustainable use of MSWW to produce higher value-added products. This study investigated the slow pyrolysis of Terminalia catappa L. fruit and the use of the aqueous fraction produced for bovine mastitis control. We obtained four fractions from the pyrolysis process, with average yields of the aqueous phase (36.22 ± 2.0 %), bio-oil (5.52 ± 0.4 %), biochar (37.55 ± 2.8 %) and gas (20.71 ± 2.0 %). The aqueous fraction was extracted with organic solvents and analyzed by gas chromatography coupled to mass spectrometry (GC‒MS). The extracts were composed mainly of phenols (50 %), furan derivatives, cyclic ketones, and others with lower contents, such as alcohols and esters. The aqueous fraction had bactericidal activity against Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa and Escherichia coli, which are responsible for bovine mastitis. In addition, the fraction showed low cytotoxicity against a murine melanoma cell line from a C57BL/6J mouse, B16F10 cells and mouse peritoneal cells.
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Affiliation(s)
- Rafaelle Vinturelle
- Laboratory of Pest and Parasite Studies – Federal Fluminense University–Institute of Biology– Department of Cellular and Molecular Biology – Niterói, RJ, Brazil, CEP 24210-201
- Postgraduate Program in Science and Biotechnology – Federal Fluminense University – Niterói, RJ, CEP: 24.210-201, Brazil
| | - Taissa da Silva Cabral
- Postgraduate Program in Chemistry – Federal Fluminense University – Niterói, RJ, CEP; 24.020-141, Brazil
- Laboratory of Synthesis, Chromatography and Environment (SINCROMA) – Federal Fluminense University – Institute of Chemistry – Department of Organic Chemistry – Niterói, RJ, Brazil
| | - Pamella C.O. de Oliveira
- Postgraduate Program in Chemistry – Federal Fluminense University – Niterói, RJ, CEP; 24.020-141, Brazil
- Laboratory of Synthesis, Chromatography and Environment (SINCROMA) – Federal Fluminense University – Institute of Chemistry – Department of Organic Chemistry – Niterói, RJ, Brazil
| | - Juliana P. Salles
- Laboratory of Studies in Experimental Pharmacology, Federal University of Rio de Janeiro, Ilha do Fundão, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Juliana V. Faria
- Laboratory for Environmental Health Assessment and Promotion, Oswaldo Cruz Institute, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Guilherme P. Teixeira
- Laboratory for Environmental Health Assessment and Promotion, Oswaldo Cruz Institute, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Robson X. Faria
- Postgraduate Program in Science and Biotechnology – Federal Fluminense University – Niterói, RJ, CEP: 24.210-201, Brazil
- Laboratory for Environmental Health Assessment and Promotion, Oswaldo Cruz Institute, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Márcia C.C. Veloso
- Laboratory of Synthesis, Chromatography and Environment (SINCROMA) – Federal Fluminense University – Institute of Chemistry – Department of Organic Chemistry – Niterói, RJ, Brazil
| | - Gilberto A. Romeiro
- Postgraduate Program in Chemistry – Federal Fluminense University – Niterói, RJ, CEP; 24.020-141, Brazil
- Laboratory of Synthesis, Chromatography and Environment (SINCROMA) – Federal Fluminense University – Institute of Chemistry – Department of Organic Chemistry – Niterói, RJ, Brazil
| | - EvelizeFolly das Chagas
- Laboratory of Pest and Parasite Studies – Federal Fluminense University–Institute of Biology– Department of Cellular and Molecular Biology – Niterói, RJ, Brazil, CEP 24210-201
- Postgraduate Program in Science and Biotechnology – Federal Fluminense University – Niterói, RJ, CEP: 24.210-201, Brazil
- National Institute of Sciences and Technology - Molecular Entomology INCT-EM – Brazil, Rio de Janeiro, Brazil
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Antimicrobial Activity of Slow Pyrolysis Distillates from Pine Wood Biomass against Three Pathogens. FORESTS 2022. [DOI: 10.3390/f13040559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The aim of this study was to evaluate the antimicrobial activity of wood distillates obtained from Scots pine (Pinus sylvestris) sawdust in order to explore new alternatives for the utilization of wood industry by-products. The distillates were produced by slow pyrolysis thermal conversion in three process phases with increasing temperatures, namely drying, torrefaction and pyrolysis, and three cooling units with different temperatures to condensate the distillates. This yielded nine different liquid fractions. The food-related pathogens, Salmonella, Listeria monocytogenes and Candida albicans, were evaluated for their susceptibility to the distillate fractions using an agar diffusion test. The antimicrobial activity was estimated by measuring the formed inhibition zones after the incubation period. In addition, the minimum inhibitory concentration (MIC) and microbicidic concentration were assayed for a selected fraction (T2) from the torrefaction phase with Bio-screen C. The results indicated that the distillates from the torrefaction and pyrolysis phases had antimicrobial activity against the tested microbes. The MIC value of the T2 fraction for all tested microbes was 0.83% (v/v). Furthermore, the T2 fraction was microbicidic for Salmonella and Listeria strains in 0.83% (v/v) solution and Candida strain in 1.67% (v/v) solution. In conclusion, Scots pine wood distillates obtained from slow pyrolysis have the potential to be developed as antimicrobial agents against pathogenic microbes. Next, research is needed to investigate the chemical composition of the distillates and to assess their safe use.
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