Results 61 to 70 of about 1,037 (162)

Chemically engineered essential oils prepared through thiocyanation under solvent-free conditions: chemical and bioactivity alteration

Natural Products and Bioprospecting
The generation of chemically engineered essential oils (CEEOs) prepared from bi-heteroatomic reactions using ammonium thiocyanate as a source of bioactive compounds is described.
Liz E. Lescano, Mario O. Salazar, Ricardo L. E. Furlan   +2 more
doaj   +1 more source

Double the Chemistry, Double the Fun: Structural Diversity and Biological Activity of Marine-Derived Diketopiperazine Dimers

Marine Drugs, 2019
While several marine natural products bearing the 2,5-diketopiperazine ring have been reported to date, the unique chemistry of dimeric frameworks appears to remain neglected.
Nelson G. M. Gomes, Renato B. Pereira, Paula B. Andrade, Patrícia Valentão   +3 more
doaj   +1 more source

1000 Preguntas y respuestas en Farmacognosia

, 2013
Memoria ID12-0315. Ayudas de la Universidad de Salamanca para la innovaci?n docente, curso 2012-2013.
Sevilla Toral, María Ángeles, Carrón de la Calle, Rosalía, Montero Gómez, María Josefa   +2 more
openaire   +1 more source

An integrative review on traditional uses, phytochemical composition, biological activities, nutritional relevance and technological application of Dioscoreaceae species

Discover Plants
The Dioscoreaceae, a family of monocotyledonous flowering plants comprising about 650 species across four genera, is prevalent in tropical regions and plays a vital role in diets across the Global South.
Felipe Ribeiro da Silva, Auygna Pamyda Gomes da Silva, Cledson dos Santos Magalhaes, Marina Maria Barbosa De Oliveira, Karina Perrelli Randau   +4 more
doaj   +1 more source

The Search for Antifungals from Amazonian Trees: A Bio-Inspired Screening

Natural Product Communications, 2015
The anti-fungal activity of 60 extracts from 15 tree species in the French Guiana rainforest against human and wood-rotting fungi was studied. In this way (+)-mopanol ( 1 ) was isolated from the ethyl acetate extract of Peltogyne sp.
Charlie Basset, Véronique Eparvier, Laila S. Espindola   +2 more
doaj   +1 more source

Método de Isolamento e Identificação de Escopolamina em Datura suaveolens (Trombeteira-Branca)

Arquivos de Ciências da Saúde da UNIPAR, 2008
Desenvolveu-se um método de isolamento e identificação de escopolamina das folhas de Datura suaveolens, para ser utilizado em aulas práticas de farmacognosia e fitoterapia, utilizando-se a extração ácido-básica para obtenção dos alcalóides totais. Para o
Diógenes Aparício Garcia Cortez, Lúcia Elanie Ranieri Cortez   +1 more
doaj  

Chemical Composition and Larvicidal Activity of Essential Oil from Venezuelan Andes

Natural Product Communications, 2010
The chemical constituents of the essential oil obtained by hydrodistillation of the leaves of Eugenia triquetra O. Berg, collected in Táchira State, Venezuela, were identified by GC-MS analysis. Twenty-six components, which made up 88.5% of the oil, were
Flor D. Mora, Jorge L. Avila, Luis B. Rojas, Rosslyn Ramírez, Alfredo Usubillaga, Samuel Segnini, Juan Carmona, Bladimiro Silva   +7 more
doaj   +1 more source

Antimicrobial Activity of Fungal Endophytes Associated with Peperomia argyreia (Piperaceae)

Applied Microbiology
The endophytic fungal biodiversity of unique plants like Peperomia argyreia (Miq.) É. Morren (Piperaceae) has antimicrobial properties and can be employed for infection treatment.
Melisa Isabel Barolo, María Victoria Castelli, Silvia Noelí López   +2 more
doaj   +1 more source

A Validated Reverse Phase HPLC Analytical Method for Quantitation of Glycoalkaloids in Solanum lycocarpum and Its Extracts

Journal of Analytical Methods in Chemistry, 2012
Solanum lycocarpum (Solanaceae) is native to the Brazilian Cerrado. Fruits of this species contain the glycoalkaloids solasonine (SN) and solamargine (SM), which display antiparasitic and anticancer properties.
Renata Fabiane Jorge Tiossi, Mariza Abreu Miranda, João Paulo Barreto de Sousa, Fabíola Silva Garcia Praça, Maria Vitória Lopes Badra Bentley, James Dewey McChesney, Jairo Kenupp Bastos   +6 more
doaj   +1 more source

Análise fitoquímica das folhas de Tabebuia serratifolia (Vahl) Nicholson (Ipê Amarelo)

Estação Científica, 2014
Este estudo teve como objetivo realizar a análise fitoquímica nas folhas de Tabebuia serratifolia (Vahl) Nicholson (Bignoniaceae) para avaliar a presença dos principais grupos de metabólitos secundários através do extrato bruto etanólico.
Líbio José Tapajós Mota, Sheylla Susan Moreira da Silva de Almeida, Jonatas Lobato Duarte   +2 more
doaj