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Characterization of the Biological Potential of the Essential Oils from Five Species of Medicinal Plants

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American Journal of Plant Sciences 2017年第2期8卷 154-170页

作者： Danubia Aparecida Carvalho Selvati Rezende rafaela Vieira Souza Maisa Lamounier Magalh?es Alex Rodrigues Silva Caetano Marcos Schleiden Sousa Carvalho Ellen Cristina de Souza Luiz Gustavo de Lima Guimaraes David Lee Nelson Luís Roberto Batista Maria das Gra?as Cardoso Departamento de Química Universidade Federal de LavrasLavrasBrasil Departamento de Ciencia dos Alimentos Universidade Federal de LavrasLavrasMGBrasil Departamento de Ciência dos Alimentos Universidade Federal de LavrasLavrasMGBrasil Departamento de Agricultura Universidade Federal de LavrasLavrasMGBrasil Universidade Federal de Sao Joao del-Rei Sao Joao del-ReiBrasil Universidade Federal do Vale do Jequitinhonha e Mucuri DiamantinaMGBrasil

Essential oils from Mentha piperita, Cymbopogon citratus, Rosmarinus officinalis, Peumus boldus and Foeniculum vulgare were extracted by hydrodistillation, chemically characterized and quantified by GC/MS and GC/FID. The principal componentes in the essential oil of M. piperita (carvone and limonene), C. citratus (geranial, neral and myrcene), R. officinalis (1,8-cineole, camphor and α-pinene), P. boldus (α-terpinyl formate, p-cymene and 1,8-cineole) and F. vulgare (methyl chavicol, limonene and fenchone) were identified. The oils were tested for antioxidant activity employing the DPPH (2,2-diphenyl-1-picryl-hydrazyl) radical-capture method, the oxidation of the β-carotene/linoleic acid system, and the ABTS radical-capture method. The essential oils were not effective. The antioxidant activities of the oils were determined by the hydroxyl method, and the highest activity (62.80%) was observed with the essential oil from M. piperita. Activities of 1.54 and 1.82 μg μg-1, respectively, were observed for the essential oils from C. citratus and P. Boldus using the phosphomolybdenum method. No activity was observed with respect to reducing power. The essential oil from C. citratus was effective in inhibiting the growth of L. monocytogenes (15.63 mg·L-1), S. choleraesuis (15.63 mg·L-1) and E. coli (31.25 mg·L-1), and the essential oil from P. boldus inhibited the growth of S. aureus (62.5 mg·L-1). No essential oil inhibited the growth of P. aeruginosa. A low antioxidant activity and a promising antibacterial activity were observed for these essential oils.

关键词： Natural Products Antioxidant Antibacterial Activity

Influence of Cold Storage on the Bioactivity Properties and the Quality of the Juice of Moro Blood Orange(Citrus sinensis(L.)Osbeck)

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American Journal of Plant Sciences 2019年第1期10卷 24-37页

作者： Maisa Lamounier Magalhaes Luiz Carlos De Oliveira Lima Allan da Silva Lunguinho Danubia Aparecida De Carvalho Selvati Rezende Vanuzia Rodrigues Fernandes Ferreira rafaela Magalhaes Brandao Josefina Aparecida De Souza Ellen Cristina De Souza Kátia Júlia De Almeida David Lee Nelson Maria Das Gracas Cardoso Departamento de Ciencia dos Alimentos Universidade Federal de Lavras(UFLA)LavrasBrazil Departamento de Química Universidade Federal de Lavras(UFLA)LavrasBrazil Programa de Pos-Graduacao em Biocombustívis Universidade Federal do Vale do Jequitinhonha e MucuriDiamantinaBrazil

The possibility of commercialization of Moro blood oranges in tropical countries such as Brazil was evaluated to verify whether post-harvest management through storage at low temperatures for a period of 60 days can improve the bioactive properties and quality parameters. Moro blood oranges cultivated in Brazil did not contain significant amounts of anthocyanins at the time of harvesting, but these compounds were activated by post-harvest management through storage at low temperatures (4°C and 8°C) for a period of 60 days. The emergence of the anthocyanins in the juices occurred within a few weeks of storage, but the maximum levels were attained after 60 days and at the temperature of 8°C. Cold storage positively influenced other bioactive compounds such as total phenolic compounds, individual phenolic compounds, β-carotene and the antioxidant activity determined by the sequestration of DPPH free radicals. It did not influence the vitamin C content. In addition, storage significantly altered the color, total acidity and pH of the fruits, but it did not prevent its commercial use. The remaining quality parameters were not influenced. It is possible to commercialize these oranges in Brazil through post-harvest management.

关键词： Cyanidin-3-Glycoside Antioxidant Post-Harvest

Chemical Characterization and in Vitro Antitumor Activity of the Essential Oils from the Leaves and Flowers of Callistemon viminalis

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American Journal of Plant Sciences 2015年第16期6卷 2664-2671页

作者： Christiane Maria de Oliveira Maria das Gracas Cardoso Marisa Ionta Marisi Gomes Soares Juliana de Andrade Santiago Guilherme álvaro Ferreira da Silva Maria Luisa Teixeira Danúbia Aparecida de Carvalho Selvati Rezende rafaela Vieira de Souza Luana Isac Soares David Lee Nelson Marcos Schleiden Sousa Carvalho Department of Chemistry Federal University of LavrasLavrasBrazil Institute of Biomedical Sciences Federal University of AlfenasAlfenasBrazil Department of Chemistry Federal University of AlfenasAlfenasBrazil Federal University of Vales de Jequitinhonha e Mucuri DiamantinaBrazil Department of Agriculture Federal University of LavrasLavrasBrazil

The objective of this study was to characterize and verify the in vitro antitumor activity of essential oils (EOs) extracted from the leaves and flowers of Callistemon viminalis. The EOs were extracted by hydrodistillation using a modified Clevenger apparatus. The identification and quantification of constituents were performed on a gas chromatograph coupled to a mass spectrometer and a gas chromatograph with a flame ionization detector. The antitumoral activity was evaluated by a colorimetric assay (MTS) using different cell lines derived from human tumors (breast, lung, glioblastoma, and melanoma). The major constituents of the EOs of leaves and flowers were similar, only quantitative differences being observed. The compounds 1,8-cineole, α-pinene and α-terpineol were found in concentrations of 50.4%, 25.8% and 8.7% in the EOs obtained from the leaves and 48.8%, 24.5% and 3.9% in the EOs obtained from the flowers, respectively. The cytotoxic activity of the EOs was observed only in melanoma cultures (HT144). Cultures treated for 48 h with EOs from leaves and flowers (200 μg·mL-1) reduced the viability by 40% and 25%, respectively. Thus, the antiproliferative activity of the EO from leaves was more pronounced than the EO from flowers in cells derived from melanoma.

关键词： Cancer Volatile Oil Escova-de-Garrafa(Bottle Brush)

Comparison and Quantification of the Development of Phenolic Compounds during the Aging of Cachaca in Oak(Quercus sp)and Amburana(Amburana cearensis)Barrels

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American Journal of Plant Sciences 2014年第21期5卷 3140-3150页

作者： Wilder D.Santiago Maria das G.Cardoso Juliana de A.Santiago Marcos S.Gomes Leonardo M.A.Rodrigues rafaela M.Brandao Rodolfo R.Cardoso Gabriel B.d’Avila Bruno L.da Silva Alex R.S.Caetano Department of Chemistry Federal University of LavrasLavrasBrazil Department of Food Science Federal University of LavrasLavrasBrazil

Aging is a stage of the cachaça production process in which several chemical reactions occur between compounds extracted from the wood and other compounds present on the beverage. In an attempt to establish a profile regarding the chemical characterization of aged cachaças, phenolic compounds have been studied because of the specific characteristics of each wood species and their known antioxidant properties. This work sought to assess and compare the development of 12 phenolic compounds in cachaças aged in oak (Quercus sp) and amburana (Amburana cearenses) barrels during a period of 12 months. There was a progressive increase in the concentration of phenolic compounds in the beverage for both of the types of wood. The principal compounds encountered in the cachaça aged in oak barrels were gallic acid, syringaldehyde and syringic acid, while vanillic acid, syringaldehyde, sinapic acid and gallic acid were isolated from that aged in amburana barrels.

关键词： Beverage Aging Phenolic Compounds Liquid Chromatography

Variation of Morpho-Agronomic and Biomass Quality Traits in Elephant Grass for Energy Purposes According to Nitrogen Levels

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American Journal of Plant Sciences 2015年第11期6卷 1685-1696页

作者： Erik da Silva Oliveira Rogério Figueiredo Daher Niraldo José Ponciano Geraldo de Amaral Gravina José Augusto de Almeida Sant’ana Romildo Domingos Gottardo Bruna rafaela da Silva Menezes Paulo Marcelo de Souza Cláudio Luiz Melo de Souza Veronica Brito da Silva Avelino dos Santos Rocha Antonio Alonso Cecon Novo Universidade Estadual do Norte Fluminense Darcy Ribeiro Campos dos GoytacazesRJBrazil Instituto Federal do Espírito Santo Campus of AlegreAlegreESBrazil Universidade Federal Rural do Rio de Janeiro SeropédicaRJBrazil

Elephant grass is a tropical forage plant widely spread in Brazil, used mainly in the livestock sector and in cattle feeding. Because of its high productivity and photosynthetic capacity, this culture has also been considered an alternative source of renewable energy. Six clones of elephant grass (Pennisetum purpureum Schum.) were evaluated under five levels of nitrogen fertilization (100, 200, 400, 800, and 1600 kg·N·ha-1), in a randomized-block design with a split-plot arrangement with three replicates, from April 2010 to December 2012, in the city of Campos dos Goytacazes— RJ, Brazil. The objective was to obtain estimates of variation in morpho-agronomic traits and biomass quality. We observed that genotypes Cameroon-Piracicaba and Gua?u I/Z2 have great potential to be used, with maximum dry matter yields of 60.97 and 44.10 t·ha-1 per cut for energy purposes among the studied genotypes.

关键词： Nitrogen Fertilization Alternative Energy Energy Biomass Dry Matter Yield Pennisetum purpureum Schum

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可诱导基因在心肌预处理中的表达特征

国外医学（麻醉学与复苏分册） 2004年第2期25卷 120-124页

作者： Pavel Sergeev rafaela da Silva M.S. Eliana Lucchinetti Kathrin Zaugg Thomas Pasch Marcus C.Schaub Michael Zaugg 李军李广明 Institute of Pharmacology and Toxicology University of Zurich. Institute of Pharmacology and Toxicology University of Zurich Department of Medical Biophysics University of TorontoCanadaand the Advanced Medical Discovery InstituteOntario Cancer Institute University Hospital Zurich Cardiovascular Anesthesia Laboratory Institute of AnesthesiologyUniversity Hospital Zurichand Institute of Pharmacology and ToxicologyUniversity of Zurich 徐州医学院江苏省麻醉学重点实验室

和短暂缺血相似,挥发性麻醉药可通过多种复杂的快速磷酸化反应促进心肌组织细胞建立保护状态,这种现象被称为经典或早期预处理,其作用短暂,持续l h～2 h后消失;预处理刺激还可进一步触发第二次长时间持续的基因反应以增加新蛋白质的合成... 详细信息

和短暂缺血相似,挥发性麻醉药可通过多种复杂的快速磷酸化反应促进心肌组织细胞建立保护状态,这种现象被称为经典或早期预处理,其作用短暂,持续l h～2 h后消失;预处理刺激还可进一步触发第二次长时间持续的基因反应以增加新蛋白质的合成,尽管这种延迟性的心肌保护效应(又称为延迟性预处理或第二保护窗)没有早期预处理的作用强,但可持续到72 h,因此在治疗方面更有前景.

关键词：可诱导基因心肌预处理表达特征挥发性麻醉药延迟性预处理

In silico insight into Amurensinine - an N-Methyl-D-Aspartate receptor antagonist

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World Journal of Pharmacology 2023年第3期12卷 25-34页

作者： Cinthia Façanha Wendel Queren Hapuque Oliveira Alencar rafaela Viana Vieira Kádima Nayara Teixeira Programa Multicêntrico de Pós-graduação em Bioquímica e Biologia Molecular-Setor Palotina Universidade Federal do ParanáPalotina 85.950-000ParanáBrazil

BACKGROUND Some isopavines can exhibit important biological activity in the treatment of neurological disorders since it is considered an antagonist of the specific Nmethyl-D-Aspartate(NMDA)*** is an isopavine which still has few *** view of the potential of isopavines as NMDA receptor antagonists,theoretical studies using bioinformatics were carried out in order to investigate whether Amurensinine binds to the NMDA receptor and to analyze the receptor/Ligand *** data can contribute to understanding of the onset of neurological diseases and contribute to the planning of drugs for the treatment of neurological diseases involving the NMDA *** To investigate the interaction of the antagonist Amurensinine on the GluN1A/GluN2B isoform of the NMDA receptor using *** The three-dimen-sional structure of the GluN1A/GluN2B NMDA receptor was selected from the Protein Data Bank(PDB)-PDB:4PE5,and the three-dimensional structure of Amurensinine(ligand)was designed and optimized using ACD/SchemsketchTM *** of the protonation state of Amurensinine at physiological pH was performed using MarvinSketch software(ChemAxon).Protonated and non-protonated Amurensin were prepared using AutoDock Tools 4 software and simulations were performed using Autodock Vina *** receptor/Ligand complexes were analyzed using PyMol(Schrödinger,Inc)and BIOVIA Discovery Studio(Dassault Systemes)*** evaluate the NMDA receptor/Amurensinine complex and validate the molecular docking,simulations using NMDA receptor and Ifenprodil antagonist were performed under the same *** was also designed,optimized and protonated,under the same conditions as *** Molecular docking simulations showed that both non-protonated and protonated Amurensinine bind to the amino terminal domain(ATD)domain of the GluN1A/GluN2B NMDA receptor with significant affinity energy,-7.9 Kcal/mol and-8.1 Kcal/mol,respect

关键词： Amurensinine Bioinformatics analysis Isopavines Molecular docking N-methyl-D-Aspartate receptor

Chemical Composition and Allelopathic Activity of the Essential Oil from Callistemon viminalis(Myrtaceae)Blossoms on Lettuce(Lactuca sativa L.)Seedlings

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American Journal of Plant Sciences 2014年第24期5卷 3551-3557页

作者： Christiane Maria de Oliveira Maria das Gracas Cardoso Ana Cristina da Silva Figueiredo Maria Laene Moreira de Carvalho Cintia Alvarenga Santos Fraga de Miranda Luiz Roberto Marques Albuquerque David Lee Nelson Marcos de Souza Gomes Lucilene Fernandes Silva Juliana de Andrade Santiago Maria Luisa Teixeira rafaela Magalhaes Brandao Department of Chemistry Federal University of LavrasLavrasBrazil Centro de Biotecnologia Vegetal/IBB Departamento de Biologia VegetalFaculdade de Ciencias de LisboaUniversidade de LisboaLisbonPortugal Department of Agriculture Federal University of LavrasLavrasBrazil Federal University of Valleys Jequitinhonha and Mucuri DiamantinaBrazil

The extraction of essential oils was performed by using the technique of hydrodistillation modified Clevenger apparatus, identification and quantification of the constituents was achieved by Gas Chromatography coupled to Mass Spectrometry, and Gas Chromatography equipped with a flame ionization detector. Assessment of allelopathic activity was evaluated with the use of the method that assesses the direct contact of essential oils on germination and vigor of lettuce seeds. The major constituents that characterize the essential oil from the flowers of Callistemon viminalis were 1, 8-cineole, α-pinene and limonene at concentrations of 66.9%, 16.0% and 10.0%, respectively. The essential oil presented allelopathic activity at intensities that varied proportionately to the concentration of the essential oil, with a reduction in the percentage of germination and the germination speed index (GSI) of lettuce seeds and in the dry mass and length of shoots and roots of lettuce seedlings.

关键词： Biological Activity Myrtaceae Allelopathy

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宝马助力卡车搭乘氢风

商业周刊（中文版） 2023年第2期 83-83页

作者： rafaela Lindeberg 简远(译) 不详

这家汽车制造商计划推出小型氢燃料电池测试车队,宝马公司(BMWAG)希望未来的氢燃料站能为卡车所用,从而在一定程度上解决一个旷日持久的难题:为氢动力汽车建造代价不菲的基础设施网络。这家德国豪车制造商2022年开始为一支小型测试车队... 详细信息

这家汽车制造商计划推出小型氢燃料电池测试车队,宝马公司(BMWAG)希望未来的氢燃料站能为卡车所用,从而在一定程度上解决一个旷日持久的难题:为氢动力汽车建造代价不菲的基础设施网络。这家德国豪车制造商2022年开始为一支小型测试车队生产燃料电池系统。在电动汽车大量涌现之际,宝马仍在推进氢动力车型计划。

关键词：氢燃料电池宝马公司燃料电池系统基础设施网络电动汽车汽车制造商氢动力汽车车队