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Pedro SI, Fernandes TA, Luís Â, Antunes AMM, Gonçalves JC, Gominho J, Gallardo E, Anjos O. First Chemical Profile Analysis of Acacia Pods. Plants (Basel) 2023; 12:3486. [PMID: 37836226 PMCID: PMC10575431 DOI: 10.3390/plants12193486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/28/2023] [Accepted: 10/01/2023] [Indexed: 10/15/2023]
Abstract
This study intended to evaluate the potential industrial applications of various Acacia species (Acacia melanoxylon, Acacia longifolia, Acacia cyclops, Acacia retinodes, Acacia pycnantha, Acacia mearnsii, and Acacia dealbata) by examining their chemical composition, antioxidant, and antimicrobial properties. Using high-resolution mass spectrometry, a comprehensive analysis successfully identified targeted compounds, including flavonoids (flavonols/flavones) and phenolic acids, such as 4-hydroxybenzoic acid, p-coumaric acid, and ellagic acid. Additionally, p-coumaric acid was specifically identified and quantified within the hydroxycinnamic aldehydes. This comprehensive characterization provides valuable insights into the chemical profiles of the studied species. Among the studied species, A. pycnantha exhibited a higher concentration of total phenolic compounds, including catechin, myricetin, quercetin, and coniferaldehyde. Furthermore, A. pycnantha displayed notable antibacterial activity against K. pneumoniae, E. coli, S. Typhimurium, and B. cereus. The identified compounds in Acacia pods and their shown antibacterial activities exhibit promising potential for future applications. Moreover, vibrational spectroscopy was a reliable method for distinguishing between species. These significant findings enhance our understanding of Acacia species and their potential for various industrial applications.
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Affiliation(s)
- Soraia I. Pedro
- Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal; (S.I.P.); (J.C.G.)
- Centro de Biotecnologia de Plantas da Beira Interior, 6001-909 Castelo Branco, Portugal
| | - Tiago A. Fernandes
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico (IST), Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal; (T.A.F.); (A.M.M.A.)
- Departamento de Ciências e Tecnologia (DCeT), Universidade Aberta,1000-013 Lisboa, Portugal
| | - Ângelo Luís
- Centro de Investigação em Ciências da Saúde (CICS-UBI), Universidade da Beira Interior, 6200-506 Covilhã, Portugal; (Â.L.); (E.G.)
- Laboratório de Fármaco-Toxicologia, UBIMedical, Universidade da Beira Interior, 6200-284 Covilhã, Portugal
| | - Alexandra M. M. Antunes
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico (IST), Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal; (T.A.F.); (A.M.M.A.)
| | - José C. Gonçalves
- Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal; (S.I.P.); (J.C.G.)
- Centro de Biotecnologia de Plantas da Beira Interior, 6001-909 Castelo Branco, Portugal
- CERNAS-IPCB Research Centre for Natural Resources, Environment and Society, Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal
| | - Jorge Gominho
- Centro de Estudos Florestais (CEF), Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, 349-017 Lisboa, Portugal;
| | - Eugenia Gallardo
- Centro de Investigação em Ciências da Saúde (CICS-UBI), Universidade da Beira Interior, 6200-506 Covilhã, Portugal; (Â.L.); (E.G.)
- Laboratório de Fármaco-Toxicologia, UBIMedical, Universidade da Beira Interior, 6200-284 Covilhã, Portugal
| | - Ofélia Anjos
- Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal; (S.I.P.); (J.C.G.)
- Centro de Biotecnologia de Plantas da Beira Interior, 6001-909 Castelo Branco, Portugal
- CERNAS-IPCB Research Centre for Natural Resources, Environment and Society, Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal
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Fernandes TA, Antunes AMM, Caldeira I, Anjos O, de Freitas V, Fargeton L, Boissier B, Catarino S, Canas S. Identification of gallotannins and ellagitannins in aged wine spirits: A new perspective using alternative ageing technology and high-resolution mass spectrometry. Food Chem 2022; 382:132322. [PMID: 35158268 DOI: 10.1016/j.foodchem.2022.132322] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 01/20/2022] [Accepted: 01/30/2022] [Indexed: 11/17/2022]
Abstract
This research was focused on identifying gallotannins and ellagitannins degradation pathways to better understand their behavior in complex media such as wine spirits (WS). A WS was aged with chestnut wood staves with three levels of micro-oxygenation, nitrogen, and using wooden barrels. Gallotannins and ellagitannins were identified by LC-ESI-HRMS/MS using a Q-TOF in samples collected at 8, 21, 60, 180, 270, and 365 days of ageing, allowed comparing their relative abundances according to the ageing technology. It was established for the first time, the importance of oxygen in gallotannins and ellagitannins formation/degradation pathways in WS and shading light into the explanation for the steady increase of gallic and ellagic acid contents on WS during ageing. The results also highlighted the presence of penta-O-galloyl-β-d-glucose, tetra-O-galloyl-β-d-glucose, tri-O-galloyl-β-d-glucose, di-O-galloyl-β-d-glucose, and mono-O-galloyl-β-d-glucose, 2,3-(S)-hexahydroxydiphenoyl-β-d-glucose, pedunculagin, isomers vescalagin/castalagin and two products stemming from ethanol-promoted oxidation of castalagin/vescalagin and vescalin/castalin, in the composition WS aged with chestnut wood.
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Affiliation(s)
- Tiago A Fernandes
- CQE, Centro de Química Estrutural, Institute of Molecular Sciences, Associação do Instituto Superior Técnico para a Investigação e Desenvolvimento (IST-ID), Universidade de Lisboa, 1049-001 Lisboa, Portugal; DCeT, Departamento de Ciências e Tecnologia, Universidade Aberta, Rua da Escola Politécnica,141-147, 1269-001 Lisboa, Portugal.
| | - Alexandra M M Antunes
- CQE, Centro de Química Estrutural, Institute of Molecular Sciences, Associação do Instituto Superior Técnico para a Investigação e Desenvolvimento (IST-ID), Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Ilda Caldeira
- INIAV, Instituto Nacional de Investigação Agrária e Veterinária, Quinta de Almoínha, Pólo de Dois Portos, 2565-191 Dois Portos, Portugal; MED, Mediterranean Institute for Agriculture, Environment and Development, Instituto de Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
| | - Ofélia Anjos
- Instituto Politécnico de Castelo Branco, Quinta da Senhora de Mércules, 6001-909 Castelo Branco, Portugal; CEF, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Victor de Freitas
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | - Laurent Fargeton
- Vivelys, Domaine du Chapître, 34750 Villeneuve-les-Maguelone, France
| | - Benjamin Boissier
- Vivelys, Domaine du Chapître, 34750 Villeneuve-les-Maguelone, France
| | - Sofia Catarino
- LEAF, Linking Landscape, Environment, Agriculture and Food Research Center, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; CEFEMA, Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
| | - Sara Canas
- INIAV, Instituto Nacional de Investigação Agrária e Veterinária, Quinta de Almoínha, Pólo de Dois Portos, 2565-191 Dois Portos, Portugal; MED, Mediterranean Institute for Agriculture, Environment and Development, Instituto de Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
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Oliveira-Alves S, Lourenço S, Anjos O, Fernandes TA, Caldeira I, Catarino S, Canas S. Influence of the Storage in Bottle on the Antioxidant Activities and Related Chemical Characteristics of Wine Spirits Aged with Chestnut Staves and Micro-Oxygenation. Molecules 2021; 27:molecules27010106. [PMID: 35011336 PMCID: PMC8796032 DOI: 10.3390/molecules27010106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/18/2021] [Accepted: 12/21/2021] [Indexed: 12/19/2022] Open
Abstract
Different ageing technology of wine spirits (WSs) has been investigated, but little has been published on the chemical evolution of aged WS during storage in bottle. The purpose of this study was to examine how 12 months of storage in bottle affected the evolution of antioxidant activity (DPPH, FRAP and ABTS assays), total phenolic index (TPI) and low molecular weight (LMW) compounds content of the WSs aged through alternative technology using three micro-oxygenation levels (MOX) and nitrogen control (N). Results revealed the ability of phenolic compounds from aged WSs to scavenge free radicals during storage in bottle. Among the in vitro antioxidant-activity methods, FRAP assay was the more effective to differentiate WSs according to the ageing technology. Concerning the overall influence of storage in bottle on antioxidant activity, and TPI and LMW compounds content, the higher results were obtained for the MOX modalities (O15, O30 and O60), which showed a similar evolution. In summary, this study provides innovative information, demonstrating that the differences between the aged WSs imparted throughout the ageing process (resulting from different MOX levels) were mostly retained, and only slight modifications during storage in bottle were found.
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Affiliation(s)
- Sheila Oliveira-Alves
- Instituto Nacional de Investigação Agrária e Veterinária, Polo de Dois Portos, Quinta de Almoinha, 2565-191 Dois Portos, Portugal; (S.L.); (I.C.)
- Correspondence: (S.O.-A.); (S.C.)
| | - Sílvia Lourenço
- Instituto Nacional de Investigação Agrária e Veterinária, Polo de Dois Portos, Quinta de Almoinha, 2565-191 Dois Portos, Portugal; (S.L.); (I.C.)
| | - Ofélia Anjos
- Instituto Politécnico de Castelo Branco, Quinta da Senhora de Mércules, 6001-909 Castelo Branco, Portugal;
- CEF—Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- Centro de Biotecnologia de Plantas da Beira Interior, Quinta da Senhora de Mércules, 6001-909 Castelo Branco, Portugal
| | - Tiago A. Fernandes
- CQE—Centro de Química Estrutural, Associação do Instituto Superior Técnico para a Investigação e Desenvolvimento (IST-ID), Universidade de Lisboa, 1049-001 Lisboa, Portugal;
- DCeT—Departamento de Ciências e Tecnologia, Universidade Aberta, Rua da Escola Politécnica, 141-147, 1269-001 Lisboa, Portugal
| | - Ilda Caldeira
- Instituto Nacional de Investigação Agrária e Veterinária, Polo de Dois Portos, Quinta de Almoinha, 2565-191 Dois Portos, Portugal; (S.L.); (I.C.)
- MED—Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Universidade de Évora, Polo da Mitra, Ap. 94, 7006-554 Evora, Portugal
| | - Sofia Catarino
- LEAF—Linking Landscape, Environment, Agriculture and Food Research Center, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal;
- CEFEMA—Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
| | - Sara Canas
- Instituto Nacional de Investigação Agrária e Veterinária, Polo de Dois Portos, Quinta de Almoinha, 2565-191 Dois Portos, Portugal; (S.L.); (I.C.)
- MED—Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Universidade de Évora, Polo da Mitra, Ap. 94, 7006-554 Evora, Portugal
- Correspondence: (S.O.-A.); (S.C.)
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Costa IFM, Kirillova MV, André V, Fernandes TA, Kirillov AM. Time-Dependent Self-Assembly of Copper(II) Coordination Polymers and Tetranuclear Rings: Catalysts for Oxidative Functionalization of Saturated Hydrocarbons. Inorg Chem 2021; 60:14491-14503. [PMID: 34128647 DOI: 10.1021/acs.inorgchem.1c01268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This study describes a time-dependent self-assembly generation of new copper(II) coordination compounds from an aqueous-medium reaction mixture composed of copper(II) nitrate, H3bes biobuffer (N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid), ammonium hydroxide, and benzenecarboxylic acid, namely, 4-methoxybenzoic (Hfmba) or 4-chlorobenzoic (Hfcba) acid. Two products were isolated from each reaction, namely, 1D coordination polymers [Cu3(μ3-OH)2(μ-fmba)2(fmba)2(H2O)2]n (1) or [Cu2(μ-OH)2(μ-fcba)2]n (2) and discrete tetracopper(II) rings [Cu4(μ-Hbes)3(μ-H2bes)(μ-fmba)]·2H2O (3) or [Cu4(μ-Hbes)3(μ-H2bes)(μ-fcba)]·4H2O (4), respectively. These four compounds were obtained as microcrystalline air-stable solids and characterized by standard methods, including the single-crystal X-ray diffraction. The structures of 1 and 2 feature distinct types of metal-organic chains driven by the μ3- or μ-OH- ligands along with the μ-benzenecarboxylate linkers. The structures of 3 and 4 disclose the chairlike Cu4 rings assembled from four μ-bridging and chelating aminoalcoholate ligands along with μ-benzenecarboxylate moieties playing a core-stabilizing role. Catalytic activity of 1-4 was investigated in two model reactions, namely, (a) the mild oxidation of saturated hydrocarbons with hydrogen peroxide to form alcohols and ketones and (b) the mild carboxylation of alkanes with carbon monoxide, water, and peroxodisulfate to generate carboxylic acids. Cyclohexane and propane were used as model cyclic and gaseous alkanes, while the substrate scope also included cyclopentane, cycloheptane, and cyclooctane. Different reaction parameters were investigated, including an effect of the acid cocatalyst and various selectivity parameters. The obtained total product yields (up to 34% based on C3H8 or up to 47% based on C6H12) in the carboxylation of propane and cyclohexane are remarkable taking into account an inertness of these saturated hydrocarbons and low reaction temperatures (50-60 °C). Apart from notable catalytic activity, this study showcases a novel time-dependent synthetic strategy for the self-assembly of two different Cu(II) compounds from the same reaction mixture.
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Affiliation(s)
- Ines F M Costa
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Marina V Kirillova
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Vânia André
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Tiago A Fernandes
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Alexander M Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow, 117198, Russian Federation
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Leandro SR, Marques IJ, Torres RS, Fernandes TA, Vaz PD, Nunes CD. Nitroarene and dye reduction with 2:1 Co/Al layered double hydroxide catalysts – Is gold still necessary? Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fernandes TA, Mendo SG, Ferreira LP, Neng NR, Oliveira MC, Gil A, Carvalho MD, Monteiro OC, Nogueira JMF, Calhorda MJ. Photocatalytic degradation of acetaminophen and caffeine using magnetite-hematite combined nanoparticles: kinetics and mechanisms. Environ Sci Pollut Res Int 2021; 28:17228-17243. [PMID: 33394452 DOI: 10.1007/s11356-020-12016-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
The increased use of pharmaceutical and personal care products (PPCPs) has contributed to the contamination of water systems and put pressure on the development of new techniques to deal with this problem. Acetaminophen (paracetamol), a common analgesic and antipyretic drug, and caffeine, a known central nervous system stimulant, are being used frequently by many people and found in large amounts in wastewater systems. In this work, their removal, by photocatalytic degradation, was promoted using magnetic nanoparticles (NPs) based on iron oxides. Besides being obtained from cheap and plentiful source, the magnetic properties of these NPs provide an easy way to separate them from the solution when the reaction is complete. Three types of hematite-based NPs, one pure (1) and two of them composed by a magnetite core partially (2) or completely (3) covered by a hematite shell, were synthesized and characterized. Sample 2 was the best photocatalyst for both pollutants' photo-assisted degradation. Under UV-vis irradiation and using a 0.13 g catalyst/L solution, the total acetaminophen and caffeine degradation (20 ppm/150 mL) was achieved in 45 min and 60 min, respectively. The identification of some of the intermediate products was carried out by liquid chromatography in combination with electrospray ionization mass spectrometry. A complementary Density Functional Theory (DFT) study revealed the relative stability of several species formed during the acetaminophen and caffeine degradation processes and gave some insight about the most favorable degradation pathways.
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Affiliation(s)
- Tiago A Fernandes
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - Sofia G Mendo
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - Liliana P Ferreira
- Physics Department, University of Coimbra, 3004-516, Coimbra, Portugal
- BioISI - Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - Nuno R Neng
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - M Conceição Oliveira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal
| | - Adrià Gil
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
- BioISI - Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
- CIC nanoGUNE BRTA, Tolosa Hiribidea 76, 20018, Donostia-San Sebastián, Euskadi, Spain
| | - Maria Deus Carvalho
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - Olinda C Monteiro
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - José M F Nogueira
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal
| | - Maria José Calhorda
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal.
- BioISI - Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisbon, Portugal.
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Fernandes TA, Costa IFM, Jorge P, Sousa AC, André V, Cerca N, Kirillov AM. Silver(I) Coordination Polymers Immobilized into Biopolymer Films for Antimicrobial Applications. ACS Appl Mater Interfaces 2021; 13:12836-12844. [PMID: 33705111 DOI: 10.1021/acsami.0c19446] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This study describes a template-mediated self-assembly synthesis, full characterization, and structural features of two new silver-based bioactive coordination polymers (CPs) and their immobilization into acrylated epoxidized soybean oil (ESOA) biopolymer films for antimicrobial applications. The 3D silver(I) CPs [Ag4(μ8-H2pma)2]n·4nH2O (1) and [Ag5(μ6-H0.5tma)2(H2O)4]n·2nH2O (2) were generated from AgNO3 and pyromellitic (H4pma) or trimesic (H3tma) acid, also using N,N'-dimethylethanolamine (Hdmea) as a template. Both 1 and 2 feature the intricate 3D layer-pillared structures driven by distinct polycarboxylate blocks. Topological analysis revealed binodal nets with the flu and tcj/hc topology in 1 and 2, respectively. These CPs were used for fabricating new hybrid materials, namely, by doping the [ESOA]n biopolymer films with very low amounts of 1 and 2 (0.05, 0.1, and 0.5%). Their antimicrobial activity and ability to impair bacterial biofilm formation were investigated in detail against both Gram-positive (Staphylococcus epidermidis and Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacteria. Both silver(I) CPs and derived biopolymer films showed activity against all the tested bacteria in a concentration-dependent manner. Compound 1 exhibited a more pronounced activity, especially in preventing biofilm growth, with mean bacterial load reductions ranging from 3.7 to 4.3 log against the four bacteria (99.99% bacterial eradication). The present work thus opens up antibiofilm applications of CP-doped biopolymers, providing new perspectives and very promising results for the design of functional biomaterials.
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Affiliation(s)
- Tiago A Fernandes
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Inês F M Costa
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Paula Jorge
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Ana Catarina Sousa
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Área Departamental de Engenharia Química, ISEL-Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal
| | - Vânia André
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Nuno Cerca
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Alexander M Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow 117198, Russian Federation
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Bitencourt MF, Cerdótes L, Restle J, Costa PT, Fernandes TA, Ferreira OGL, Silveira DD, Vaz RZ. Age and calving time affects production efficiency of beef cows and their calves. AN ACAD BRAS CIENC 2020; 92 Suppl 1:e20181058. [PMID: 32491133 DOI: 10.1590/0001-3765202020181058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 05/10/2019] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to evaluate the influence of two sub-periods of the calving season and two cow maturity stages on the efficiency of beef cows and their calves. A total of 159 cow-calf pairs were divided by calving time (early or late) within the calving season and maturity stage (young or adult). Calves were weaned at 42 or 63 days after birth and evaluated until 210 days of age. Cows and calves had their development examined based on their weight and body condition score at calving, at weaning, and at 210 days. Reproductive performance was evaluated on the basis of time to become pregnant again. Milk yield was assessed by the direct method on three occasions spaced 21 days apart. Adult cows were heavier than young cows, at calving (398.5 vs 327.5 kg, respectively), weaning (397.3 vs 324.1 kg, respectively) at the end breeding season (424.1 vs 342.1 kg, respectively). Reproductive performance was influenced by calving time. Adult cows had higher pregnancy rates (83.75 and 69.17%, for early and for late calving, respectively) than young cows (57.03 and 35.01% for early and for late-calving, respectively). Calves from early-calving young cows weighed 158.8 kg at 210 days of age vs. 123.7 kg for those born from late-calving adult cows. However, late-calving cows produced 10.7% more milk than those that calved early in the season (227.0 vs 205.0 liters, respectively). Early calving associated with non-requirement of growth determine higher productivity efficiency in beef cows.
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Affiliation(s)
| | - Liliane Cerdótes
- Departamento de Zootecnia, Instituto Federal Sul Riograndense, Bagé, RS, Brazil
| | - João Restle
- Departamento de Zootecnia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Pablo T Costa
- Departamento de Zootecnia, Universidade Federal de Pelotas, Brazil
| | | | | | | | - Ricardo Z Vaz
- Departamento de Ciências Biológicas e Zootecnia, Universidade Federal de Santa Maria, Palmeira das Missões, RS, Brazil
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9
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Fernandes TA, André V, Arol AS, França Â, Mikhalyonok S, Cerca N, Kirillov AM. New silver (thio)semicarbazide derivatives: synthesis, structural features, and antimicrobial activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj02013c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
New silver(i) (thio)semicarbazide coordination compounds were prepared, fully characterized, and tested as antimicrobial and antibiofilm agents.
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Affiliation(s)
- Tiago A. Fernandes
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Vânia André
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Aliaksandr S. Arol
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Ângela França
- Centre of Biological Engineering
- University of Minho
- 4710-057 Braga
- Portugal
| | - Sergei Mikhalyonok
- Department of Organic Chemistry
- Belarusian State Technological University
- 220006 Minsk
- Belarus
| | - Nuno Cerca
- Centre of Biological Engineering
- University of Minho
- 4710-057 Braga
- Portugal
| | - Alexander M. Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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10
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Kirillova MV, Fernandes TA, André V, Kirillov AM. Mild C-H functionalization of alkanes catalyzed by bioinspired copper(ii) cores. Org Biomol Chem 2019; 17:7706-7714. [PMID: 31384876 DOI: 10.1039/c9ob01442j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new copper(ii) coordination compounds formulated as [Cu(H1.5bdea)2](hba)·2H2O (1), [Cu2(μ-Hbdea)2(aca)2]·4H2O (2), and [Cu2(μ-Hbdea)2(μ-bdca)]n (3) were generated by aqueous medium self-assembly synthesis from Cu(NO3)2, N-butyldiethanolamine (H2bdea) as a main N,O-chelating building block and different carboxylic acids [4-hydroxybenzoic (Hhba), 9-anthracenecarboxylic (Haca), or 4,4'-biphenyldicarboxylic (H2bdca) acid] as supporting carboxylate ligands. The structures of products range from discrete mono- (1) or dicopper(ii) (2) cores to a 1D coordination polymer (3), and widen a family of copper(ii) coordination compounds derived from H2bdea. The obtained compounds were applied as bioinspired homogeneous catalysts for the mild C-H functionalization of saturated hydrocarbons (cyclic and linear C5-C8 alkanes). Two model catalytic reactions were explored, namely the oxidation of hydrocarbons with H2O2 to a mixture of alcohols and ketones, and the carboxylation of alkanes with CO/S2O82- to carboxylic acids. Both processes proceed under mild conditions with a high efficiency and the effects of different parameters (e.g., reaction time and presence of acid promoter, amount of catalyst and solvent composition, substrate scope and selectivity features) were studied and discussed in detail. In particular, an interesting promoting effect of water was unveiled in the oxidation of cyclohexane that is especially remarkable in the reaction catalyzed by 3, thus allowing a potential use of diluted, in situ generated solutions of hydrogen peroxide. Moreover, the obtained values of product yields (up to 41% based on alkane substrate) are very high when dealing with the C-H functionalization of saturated hydrocarbons and the mild conditions of these catalytic reactions (50-60 °C, H2O/CH3CN medium). This study thus contributes to an important field of alkane functionalization and provides a notable example of new Cu-based catalytic systems that can be easily generated by self-assembly from simple and low-cost chemicals.
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Affiliation(s)
- Marina V Kirillova
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | - Tiago A Fernandes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | - Vânia André
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | - Alexander M Kirillov
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal. and Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow, 117198, Russian Federation
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11
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Armakola E, Salcedo IR, Bazaga-García M, Olivera-Pastor P, Mezei G, Cabeza A, Fernandes TA, Kirillov AM, Demadis KD. Phosphonate Decomposition-Induced Polyoxomolybdate Dumbbell-Type Cluster Formation: Structural Analysis, Proton Conduction, and Catalytic Sulfoxide Reduction. Inorg Chem 2019; 58:11522-11533. [PMID: 31403791 DOI: 10.1021/acs.inorgchem.9b01376] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of MoO42- with a number of phosphonic acids [bis(phosphonomethyl)glycine, R,S-hydroxyphosphonoacetic acid, 1-hydroxyethane-1,1-diphosphonic acid, phenylphosphonic acid, aminotris(methylene phosphonic acid), and 1,2-ethylenediphosphonic acid] under oxidizing (H2O2) hydrothermal conditions at low pH leads to rupture of the P-C bond, release of orthophosphate ions, and generation of the octanuclear, phosphate-bridged, polyoxometalate molybdenum cluster (NH4)5[Mo8(OH)2O24(μ8-PO4)](H2O)2 (POMPhos). This cluster has been fully characterized and its structure determined. It was studied as a proton conductor, giving moderate values of σ = 2.13 × 10-5 S·cm-1 (25 °C) and 1.17 × 10-4 S·cm-1 (80 °C) at 95% relative humidity, with Ea = 0.27 eV. The POMPhos cluster was then thermally treated at 310 °C, yielding (NH4)2.6(H3O)0.4(PO4Mo12O36) together with an amorphous impurity containing phosphate and molybdenum oxide. This product was also studied for its proton conductivity properties, giving rise to an impressively high value of σ = 2.43 × 10-3 S·cm-1 (25 °C) and 6.67 × 10-3 S·cm-1 (80 °C) at 95% relative humidity, 2 orders of magnitude higher than those corresponding to the "as-synthesized" solid. The utilization of POMPhos in catalytic reduction of different sulfoxides was also evaluated. POMPhos acts as an efficient homogeneous catalyst for the reduction of diphenyl sulfoxide to diphenyl sulfide, as a model reaction. Pinacol was used as a low-cost, environmentally friendly, and highly efficient reducing agent. The effects of different reaction parameters were investigated, namely the type of solvent and reducing agent, presence of acid promoter, reaction time and temperature, loading of catalyst and pinacol, allowing to achieve up to 84-99% yields of sulfide products under optimized conditions. Substrate scope was tested on the examples of diaryl, alkylaryl, dibenzyl, and dialkyl sulfoxides and excellent product yields were obtained.
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Affiliation(s)
- Eirini Armakola
- Crystal Engineering, Growth and Design Laboratory, Department of Chemistry , University of Crete , Voutes Campus , Heraklion , Crete , GR-71003 , Greece
| | - Inés R Salcedo
- Departamento de Química Inorgánica, Cristalografía y Mineralogía , Universidad de Málaga , Campus Teatinos s/n , Málaga 29071 , Spain
| | - Montse Bazaga-García
- Departamento de Química Inorgánica, Cristalografía y Mineralogía , Universidad de Málaga , Campus Teatinos s/n , Málaga 29071 , Spain
| | - Pascual Olivera-Pastor
- Departamento de Química Inorgánica, Cristalografía y Mineralogía , Universidad de Málaga , Campus Teatinos s/n , Málaga 29071 , Spain
| | - Gellert Mezei
- Department of Chemistry , Western Michigan University , Kalamazoo , Michigan 49008-5413 , United States
| | - Aurelio Cabeza
- Departamento de Química Inorgánica, Cristalografía y Mineralogía , Universidad de Málaga , Campus Teatinos s/n , Málaga 29071 , Spain
| | - Tiago A Fernandes
- Centro de Química Estrutural, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais , 1049-001 , Lisbon , Portugal
| | - Alexander M Kirillov
- Centro de Química Estrutural, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais , 1049-001 , Lisbon , Portugal.,Research Institute of Chemistry , Peoples' Friendship University of Russia (RUDN University) , 6 Miklukho-Maklaya st., Moscow , 117198 , Russian Federation
| | - Konstantinos D Demadis
- Crystal Engineering, Growth and Design Laboratory, Department of Chemistry , University of Crete , Voutes Campus , Heraklion , Crete , GR-71003 , Greece
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12
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Zhao N, Li Y, Gu J, Fernandes TA, Kirillova MV, Kirillov AM. New Copper(II) Coordination Compounds Assembled from Multifunctional Pyridine-Carboxylate Blocks: Synthesis, Structures, and Catalytic Activity in Cycloalkane Oxidation. Molecules 2018; 24:molecules24010006. [PMID: 30577477 PMCID: PMC6337171 DOI: 10.3390/molecules24010006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 12/15/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022] Open
Abstract
Two new copper(II) coordination compounds, namely a 1D coordination polymer [Cu(µ-cpna)(phen)(H2O)]n (1) and a discrete tetracopper(II) derivative [Cu(phen)2(H2O)]2[Cu2(µ-Hdppa)2(Hdppa)2] (2), were hydrothermally synthesized from copper(II) chloride as a metal source, 5-(4-carboxyphenoxy)nicotinic acid (H2cpna) or 5-(3,4-dicarboxylphenyl)picolinic acid (H3dppa) as a principal building block, and 1,10-phenanthroline (phen) as a crystallization mediator. Compounds 1 and 2 were isolated as air-stable microcrystalline solids and fully characterized by elemental and thermogravimetric analyses, IR spectroscopy, powder and single-crystal X-ray diffraction. In the solid state, the structure of 1 discloses the linear interdigitated 1D coordination polymer chains with the 2C1 topology. The crystal structure of an ionic derivative 2 shows that the mono- and dicopper(II) units are extended into the intricate 1D hydrogen-bonded chains with the SP 1-periodic net (4,4)(0,2) topology. Thermal stability and catalytic properties of 1 and 2 were also investigated. In fact, both Cu derivatives act as efficient homogeneous catalysts (catalyst precursors) for the mild oxidation of cycloalkanes by hydrogen peroxide to give the corresponding alcohols and ketones; the substrate scope and the effects of type and amount of acid promoter as well as bond-, regio-, and stereo-selectivity features were investigated.
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Affiliation(s)
- Na Zhao
- Foshan Research Center for Special Functional Building Materials and Their Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China.
| | - Yu Li
- Foshan Research Center for Special Functional Building Materials and Their Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China.
| | - Jinzhong Gu
- College of chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Tiago A Fernandes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | - Marina V Kirillova
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | - Alexander M Kirillov
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
- Peoples' Friendship University of Russia (RUDN University), Research Institute of Chemistry, 6 Miklukho-Maklaya st., Moscow 117198, Russia.
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13
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Fernandes TA, Kirillova MV, André V, Kirillov AM. Interplay between H-bonding and interpenetration in an aqueous copper(ii)-aminoalcohol-pyromellitic acid system: self-assembly synthesis, structural features and catalysis. Dalton Trans 2018; 47:16674-16683. [PMID: 30427000 DOI: 10.1039/c8dt02983k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new copper(ii) coordination compounds, [Cu(H1.5mdea)2]2(H2pma) (1a) and [{Cu2(μ-Hmdea)2}2(μ4-pma)]n·2nH2O (1b), were self-assembled at different temperatures from the same multicomponent reaction system, comprising copper(ii) nitrate, N-methyldiethanolamine (H2mdea), pyromellitic acid (H4pma), and potassium hydroxide. Products 1a and 1b were isolated as microcrystalline solids and fully characterized and their structures were established by single-crystal X-ray diffraction. Compound 1a features the bis-aminoalcohol(ate) monocopper(ii) units and H2pma2- anions that are multiply interconnected by strong H-bonds into a firm 2D H-bonded layer. Compound 1b reveals the bis-aminoalcoholate dicopper(ii) motifs that are interlinked by the μ4-pma4- spacers into a 3D + 3D interpenetrated metal-organic framework. From a topological perspective, both networks of 1a and 1b are uninodal and driven by similar 4-connected H2pma2- or pma4- nodes, but result in distinct sql and dia topologies, respectively. Compound 1a was applied as an efficient catalyst for two model cycloalkane functionalization reactions: (1) oxidation by H2O2 to form cyclic alcohols and ketones and (2) hydrocarboxylation by CO/H2O and S2O82- to form cycloalkanecarboxylic acids. The substrate scope, effects of various reaction parameters, selectivity and mechanistic features were also investigated.
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Affiliation(s)
- Tiago A Fernandes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
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14
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Kirillova MV, Santos CIM, André V, Fernandes TA, Dias SSP, Kirillov AM. Self-assembly generation, structural features, and oxidation catalytic properties of new aqua-soluble copper(ii)-aminoalcohol derivatives. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00553e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Multidentate aminoalcohols were applied as unexplored building blocks to generate two novel Cu(ii) coordination compounds that act as efficient catalysts for the mild and acid-promoter-free oxidation of C5–C8 cycloalkanes.
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Affiliation(s)
- Marina V. Kirillova
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Carla I. M. Santos
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Vânia André
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Tiago A. Fernandes
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Sara S. P. Dias
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Alexander M. Kirillov
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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15
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Fernandes TA, André V, Kirillov AM, Kirillova MV. Mild homogeneous oxidation and hydrocarboxylation of cycloalkanes catalyzed by novel dicopper(II) aminoalcohol-driven cores. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.07.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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16
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Sousa SCA, Fernandes TA, Fernandes AC. Highly Efficient Deoxygenation of Aryl Ketones to Arylalkanes Catalyzed by Dioxidomolybdenum Complexes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600441] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sara C. A. Sousa
- Centro de Química Estrutural; Instituto Superior Técnico; Av. Rovisco Pais, 1 1049-001 Lisboa Portugal
| | - Tiago A. Fernandes
- Centro de Química Estrutural; Instituto Superior Técnico; Av. Rovisco Pais, 1 1049-001 Lisboa Portugal
| | - Ana C. Fernandes
- Centro de Química Estrutural; Instituto Superior Técnico; Av. Rovisco Pais, 1 1049-001 Lisboa Portugal
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17
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Soares NM, Fernandes TA, Vicente AA. Effect of variables on the thickness of an edible coating applied on frozen fish – Establishment of the concept of safe dipping time. J FOOD ENG 2016. [DOI: 10.1016/j.jfoodeng.2015.10.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fernandes TA, Santos CIM, André V, Dias SSP, Kirillova MV, Kirillov AM. New aqua-soluble dicopper(ii) aminoalcoholate cores for mild and water-assisted catalytic oxidation of alkanes. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02084k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new dicopper(ii) pre-catalysts were synthesized, fully characterized, and applied for the mild homogeneous oxidation of alkanes.
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Affiliation(s)
- Tiago A. Fernandes
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Carla I. M. Santos
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Vânia André
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Sara S. P. Dias
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Marina V. Kirillova
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Alexander M. Kirillov
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
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Fernandes TA, Santos CIM, André V, Kłak J, Kirillova MV, Kirillov AM. Copper(II) Coordination Polymers Self-Assembled from Aminoalcohols and Pyromellitic Acid: Highly Active Precatalysts for the Mild Water-Promoted Oxidation of Alkanes. Inorg Chem 2015; 55:125-35. [DOI: 10.1021/acs.inorgchem.5b01983] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tiago A. Fernandes
- Centro de Química Estrutural, Complexo
I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco
Pais, 1049-001, Lisbon, Portugal
| | - Carla I. M. Santos
- Centro de Química Estrutural, Complexo
I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco
Pais, 1049-001, Lisbon, Portugal
| | - Vânia André
- Centro de Química Estrutural, Complexo
I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco
Pais, 1049-001, Lisbon, Portugal
| | - Julia Kłak
- Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Marina V. Kirillova
- Centro de Química Estrutural, Complexo
I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco
Pais, 1049-001, Lisbon, Portugal
| | - Alexander M. Kirillov
- Centro de Química Estrutural, Complexo
I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco
Pais, 1049-001, Lisbon, Portugal
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Affiliation(s)
- Tiago A. Fernandes
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Ana C. Fernandes
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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Fernandes TA, Solařová H, Císařová I, Uhlík F, Štícha M, Štěpnička P. Synthesis of phosphinoferrocene amides and thioamides from carbamoyl chlorides and the structural chemistry of Group 11 metal complexes with these mixed-donor ligands. Dalton Trans 2015; 44:3092-108. [PMID: 25572958 DOI: 10.1039/c4dt03279a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of in situ generated 1'-(diphenylphosphino)-1-lithioferrocene with carbamoyl chlorides, ClC(E)NMe2, affords the corresponding (thio)amides, Ph2PfcC(E)NMe2 (E = O (), S (); fc = ferrocene-1,1'-diyl). These compounds as well as their analogues, Ph2PfcC(O)NHMe () and Ph2PfcC(O)NH2 (), prepared from 1'-(diphenylphosphino)ferrocene-1-carboxylic acid (Hdpf) were studied as ligands for the Group 11 metal ions. In the reactions with [Cu(MeCN)4][BF4], the amides give rise to bis-chelate complexes of the type [Cu(L-κ(2)O,P)2][BF4]. Similar products, [Ag(L-κ(2)O,P)2]ClO4, are obtained from silver(i) perchlorate and , or . In contrast, the reaction of AgClO4 with produces a unique molecular dimer [Ag()(ClO4-κO)]2, where the metal centres are bridged by the sulfur atoms of the P,S-chelating thioamides. The reactions of with [AuCl(tht)] (tht = tetrahydrothiophene) afford the expected gold(i)-phosphine complexes, [AuCl(L-κP)], containing uncoordinated (thio)amide moieties. Hemilabile coordination of the phosphinoamide ligands in complexes with the soft Group 11 metal ions is established by the crystal structure of a solvento complex, [Cu(-κ(2)O,P)(-κP)(CHCl3-κCl)][BF4], which was isolated serendipitously during an attempted crystallisation of [Cu(-κ(2)O,P)2][BF4]. All of the compounds are characterised by spectroscopic methods, and the structures of several representatives of both the free phosphinoamides and their complexes are determined by X-ray diffraction analysis and further studied by DFT calculations and cyclic voltammetry.
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Affiliation(s)
- Tiago A Fernandes
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic.
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Fernandes TA, Galvão AM, Botelho do Rego AM, Carvalho MFNN. Cu(I) camphor coordination polymers: Synthesis and study of the catalytic activity for cyclization of 4-pentyn-1-oic acid. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27393] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Tiago A. Fernandes
- Centro de Química Estrutural; Instituto Superior Técnico, Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Adelino M. Galvão
- Centro de Química Estrutural; Instituto Superior Técnico, Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Ana M. Botelho do Rego
- Centro de Química-Física Molecular (CQFM) and Institute of Nanoscience and Nanotechnology (IN); Instituto Superior Técnico, Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - M. Fernanda N. N. Carvalho
- Centro de Química Estrutural; Instituto Superior Técnico, Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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Fernandes TA, Ferraria AM, Galvão AM, Botelho do Rego AM, Suárez AC, Carvalho MN. Synthesis, characterization and study of the catalytic properties of Zn(II) camphor derived complexes. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.10.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fernandes TA, Carvalho MFNN, Galvão AM, Bandeira NAG, Calhorda MJ, do Rego AMB. Electronic structure and properties of camphorimine Cu(I) coordination polymers. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25866] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sun B, Neves AC, Fernandes TA, Fernandes AL, Mateus N, De Freitas V, Leandro C, Spranger MI. Evolution of phenolic composition of red wine during vinification and storage and its contribution to wine sensory properties and antioxidant activity. J Agric Food Chem 2011; 59:6550-6557. [PMID: 21561162 DOI: 10.1021/jf201383e] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The objective of this work was to study the evolution of the phenolic composition of red wine during vinification and storage and its relationship with some sensory properties (astringency and bitterness) and antioxidant activities. Thus, red wine was made by a classic vinification method with Castelão and Tinta Miúda grapes (Vitis vinifera L.) harvested at maturity (3:2; w/w). Samples were taken at 2 and 7 days of maceration, at second racking, at the time of bottling and at 6 and 14 months after bottling. The total polyphenols extract (TPx) in each sample was isolated by column chromatography. The phenolic composition (anthocyanins and proanthocyanidins), in vitro antioxidant activity, and sensory property (astringency, bitterness) of the isolated TPx from different winemaking stages were evaluated through high-performance liquid chromatography-diode array detection, 1,1-diphenyl-2-picrylhidrazyl radical test, ferric reducing antioxidant power assay, total phenolic index, MWI (polyphenol molecular weight index), TSA (tannin specific activity), and sensory panel tasting. The results showed that the phenolic composition of red wine varied significantly during winemaking. The intensity of astringency (IA) and the intensity bitterness (IB) of the isolated TPx from different winemaking stages increased from 2 days of maceration until second racking and then decreased. Furthermore, MWI and TSA are positively correlated with IA and IB. The in vitro antioxidant activity of the isolated TPx from different winemaking stages maintained unchanged after alcoholic fermentation, which was independent of the variation of phenolic composition and sensory properties.
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Affiliation(s)
- Baoshan Sun
- INIA Dois Portos, Instituto Nacional de Recursos Biológicos , I.P., Quinta da Almoinha, 2565-191 Dois Portos, Portugal.
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Carvalho MFNN, Duarte MT, Fernandes TA, Galvão AM, Botelho do Rego AM. Pathway from Chain to Dimer in Cu(I) Camphor Hydrazone Complexes. Inorg Chem 2010; 49:10330-7. [DOI: 10.1021/ic101075g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Fernanda N. N. Carvalho
- CQE, Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1049-001 Lisboa, Portugal
| | - M. Teresa Duarte
- CQE, Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1049-001 Lisboa, Portugal
| | - Tiago A. Fernandes
- CQE, Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1049-001 Lisboa, Portugal
| | - Adelino M. Galvão
- CQE, Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1049-001 Lisboa, Portugal
| | - Ana M. Botelho do Rego
- Centro de Química-Física Molecular (CQFM) and Institute of Nanoscience and Nanotechnology (IN), Complexo Interdisciplinar, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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Abstract
Two nitrogen-fixing Anabaena strains were found to be differentially tolerant to salinity and osmotic stresses. Anabaena torulosa, a brackish-water, salt-tolerant strain, was relatively osmosensitive. Anabaena sp. strain L-31, a freshwater, salt-sensitive strain, on the other hand, displayed significant osmotolerance. Salinity and osmotic stresses affected nitrogenase activity differently. Nitrogen fixation in both of the strains was severely inhibited by the ionic, but not by the osmotic, component of salinity stress. Such differential sensitivity of diazotrophy to salinity-osmotic stresses was observed irrespective of the inherent tolerance of the two strains to salt-osmotic stress. Exogenously added ammonium conferred significant protection against salinity stress but was ineffective against osmotic stress. Salinity and osmotic stresses also affected stress-induced gene expression differently. Synthesis of several proteins was repressed by salinity stress but not by equivalent or higher osmotic stress. Salinity and osmotic stresses induced many common proteins. In addition, unique salt stress- or osmotic stress-specific proteins were also induced in both strains, indicating differential regulation of protein synthesis by the two stresses. These data show that cyanobacterial sensitivity and responses to salinity and osmotic stresses are distinct, independent phenomena.
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Affiliation(s)
- T A Fernandes
- Molecular Biology and Agriculture Division, Bhabha Atomic Research Centre, Trombay, Bombay 400 085, India
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Sun B, Fernandes TA, Spranger MI. A new class of anthocyanin-procyanidin condensation products detected in red wine by electrospray ionization multi-stage mass spectrometry analysis. Rapid Commun Mass Spectrom 2010; 24:254-260. [PMID: 20049894 DOI: 10.1002/rcm.4381] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In our previous work, we have identified, in a model wine solution containing malvidin 3-glucoside, epicatechin and acetaldehyde, a new condensation product--hydroxylethyl-malvidin-3-glucoside-ethyl-epicatechin. The objective of this work was to verify the presence of such new condensation products in red wine. For this purpose, red wine was fractionated into various fractions by column chromatography on LiChroprep RP 18 and on Toyopearl 40 (F). The phenolic composition of each fraction was verified by HPLC-DAD and direct-infusion ESI-MS(n) analysis. In addition to the well-known anthocyanins and their acetyl and coumaroyl derivatives, and several direct and indirect anthocyanin-(epi)catechin condensation products, a new class of pigmented products, namely hydroxyethyl-anthocyanin-ethyl-flavanol compounds, have been detected in red wine. The new class of pigmented products would be expected to be the major pigments responsible for the color of aged red wine.
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Affiliation(s)
- Baoshan Sun
- INIA-Dois Portos, Instituto Nacional de Recursos Biológicos, I.P., Quinta da Almoinha, 2565-191 Dois Portos, Portugal.
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Carvalho MFN, Fernandes TA, Galvão AM, von Nidda HAK, Sampaio MA. One-dimensional Cu(I) camphor hydrazone polymers: Structure and catalytic properties. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.09.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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