Olívia Moreira Sampaio

Amide-functionalized cholic acid hybrids: design, bioactivity, and computational analysis

Talha Mashhood, Akbar Ali, Eman Fatima, Muhammad Ibrahim et autres

investigations, including molecular docking, molecular dynamics simulations, and MM-PBSA binding free energy calculations, were conducted against the ATP-binding domain of bacterial DNA gyrase (GyrB). These computational studies revealed stable binding modes and favorable energetics that correlate with observed bioactivity. Density functional theory …

pk, br (code pays fourni par la source)

Phytotoxic Metabolites from Hyptis Species: Chemical Profiling and Bioherbicide Activity Against Amaranthus

Mariana A. Silva, Karen de Jesus Nicácio, Bárbara Sayuri Bellete, Lucas Campos Curcino Vieira et autres

High Resolution Image Download MS PowerPoint Slide The phytotoxic effects of extracts from Hyptis crenata ( Hcre ), Hyptis suaveolens ( Hsua ), Hyptis saxatilis ( Hsax ), Hyptis campestris ( Hcam ), and Hyptis brevipes ( Hbre ) were evaluated against …

br, us (code pays fourni par la source)

Metabolomics of Trichoderma spirale by Mass Spectrometry Data Dereplication

Matheus Lins da Silva, Arielly Celestino Rodrigues dos Santos, Edna Maria dos Anjos Almudi, Bárbara Sayuri Bellete et autres

br (code pays fourni par la source)

Potential of Vochysia divergens extracts as a post-emergence bioherbicide

RITA DE CASSIA DAMIANA DE ALMEIDA, Lucas Campos Curcino Vieira, Miriane Celia Moura Sales, G. P. Nishino et autres

The genus Vochysia, particularly Vochysia divergens Pohl, has been studied for its diverse biological activities and phytochemical composition. This study investigates the phytotoxic potential of V. divergens extracts as bioherbicides, with emphasis on their effects on photosystem II (PSII) and weed growth. …

br, pk (code pays fourni par la source)

Acridone Derivatives as Photosystem II Inhibitors: Synthesis, Herbicidal Activity, and Structure-Activity

Jéssica Maria de Souza, Paula Suélen Corrêa de Medeiros, Taciane Santos Pitteri, Mariana A. Silva et autres

In this study, we report the synthesis of acridone derivatives and their potential as photosystem II (PSII) inhibitors, as well as their pre- and post-emergence herbicidal activities through chlorophyll a fluorescence and germination assays. Among the compounds tested for PSII activity, acridin-9(10H)-one …

Evaluation of Antimicrobial and Antioxidant Potential of Oxalis corymbosa Extracts

Sana Atiq, Muhammad Ibrahim, Changeez Khan, Akbar Ali et autres

This work aimed to assess the antioxidant and antimicrobial properties of Oxalis corymbosa extracts. Biochemical analyses were conducted on various plant parts, utilizing enzymatic and non-enzymatic assays. Parameters such as total soluble protein, chlorophyll, and carotenoid contents were also evaluated to elucidate …

pk, my, us, sa, br (code pays fourni par la source)

Investigation of Diaporthe phaseolorum Chemical Compounds toward Mass Spectral Molecular Networking and in silico Substructure Annotation

Mariana de Souza Moura, Bárbara Sayuri Bellete, Marcos Antônio Soares, Lucas Campos Curcino Vieira et autres

Diaporthe phaseolorum, an endophyte isolated from Combretum lanceolatum, has exhibited diverse biological activities including antimicrobial, leishmanicidal, antitumoral, and herbicidal properties. Regardless of these activities, there remains limited research on its chemical constituents. Therefore, this study aimed to investigate the metabolome of D. …

Synthesis and Evaluation of New Phytotoxic Fluorinated Chalcones as Photosystem II and Seedling Growth Inhibitors

Geilly Mara Silva de Pádua, Taciane Santos Pitteri, Marcelo Augusto Ferreira Basso, Leonardo Gomes de Vasconcelos et autres

The development of novel phytotoxic compounds has been an important aim of weed control research. In this study, we synthesized fluorinated chalcone derivatives featuring both electron-donating and electron-withdrawing groups. These compounds were evaluated both as inhibitors of the photosystem II (PSII) electron …

br, pk (code pays fourni par la source)

INIBIDORES DO FOTOSSISTEMA II: UMA PERSPECTIVA ALELOQUÍMICA

Anthony da Silva, Jéssica Cordeiro Queiroz de Souza, Geilly de Pádua, Arielly Celestino Rodrigues dos Santos et autres

PHOTOSYSTHEM II INHIBITORS: AN ALLELOCHEMICAL PERSPECTIVE. The process of photosynthesis involves the absorption of light energy by photosynthetic pigments found in the thylakoid membrane of chloroplasts in order to produce chemical energy. In the presence of photosynthetic inhibitors, plant development is affected …

br (code pays fourni par la source)

Plantas medicinais no distrito de Coxipó do Ouro. Mato Grosso, Brasil

Thaís Figueiredo Conceição, Ana Carolina Magalhães Rocha, Felipe Corrêa Evangelista Ramos, Luanny Priscila Magalhães Pereira et autres

O uso de plantas medicinais é amplamente adotado por comunidades remotas, onde o acesso a serviços de saúde é limitado. Nestas comunidades, é comum que indivíduos mais experientes tenham conhecimento sobre as propriedades medicinais das plantas e o seu uso é uma …

us, br, pt (code pays fourni par la source)

Antimicrobial metabolites produced by endophytic fungi associated with the leaves of Vochysia divergens

Jéssica A. de M. Souza, Juliana R. Gubiani, Kátia Aparecida de Siqueira, Maria José de Camargo et autres

Investigation of the endophytic fungi Nigrospora sphaerica, Nigrospora oryzae, and Pseudofusicoccum stromaticum MeOH fractions isolated from the leaves of Vochysia divergens, a medicinal species from the Brazilian Pantanal, led to the identification of five compounds, namely a new compound (1E,8Z)-10,11-dihydroxy-5,5,8-trimethyl-4-oxocycloundeca-1,8-diene-1-carbaldehyde (1) and …

br (code pays fourni par la source)

O Método de Enfloração Como Ferramenta Pedagógica no Ensino de Interações Intermoleculares

Geilly Mara Silva de Pádua, Jéssica De Almeida Barradas, Isabella Moreira da Silva Pinho, Arielly Celestino Rodrigues dos Santos et autres

Este trabalho aborda o uso do experimento de enfloração para o ensino de Química empregando materiais acessíveis e disponíveis no comércio, como a gordura de soja hidrogenada (GSH) e pétalas de flores aromáticas. A abordagem pedagógica explorada no experimento pode ser trabalhada …

br (code pays fourni par la source)