Buscar recursos académicos

An ultraviolet (UV) spectrophotometric method was developed for the analysis of telithromycin, member of the ketolides, in drug substance and coated tablets. The method validation yielded good results, such as the range,...

Benzocaine (BZC) is an ester-type local anesthetic used mainly in topical, dermal and mucosal formulations. The present work consists of the development and validation of analytical methodology for evaluation of benzocai...

ABSTRACT The acaricidal activity of crude ethanolic extract and fractions from the leaves of Morus nigra (Moraceae) was carried out on female cattle ticks Rhipicephalus microplus, using the adult immersion test. The mort...

Feed is a common vehicle for tetracycline administration in animal farming. However, veterinarians and farmers often overlook that common feed components, such as proteins and calcium, may interact with these drugs and t...

Abstract Vitamin B12 deficiency may lead to serious health issues in both infants and adults. A simple analytical method involving sample pretreatment with enzyme, followed by cyanide addition under acidic conditions; se...

Globe artichoke is rich in nutrients and phenolic compounds. However, nearly 85% of its biomass is discarded following harvest. To propose a scalable and economically attractive process for the revalorization of this mat...

Phylloquinone is a redox active naphthoquinone involved in electron transport in plants. The function of this reduced form remains unclear due to its instability, which has precluded detection. Herein, a simple method th...

ObjectiveThe method of high performance liquid chromatography （HPLC） was developed to study the detection of synthetic colorants in natural pigments and condiment.MethodsThe analytes were extracted by direct ultrason...

Abstract Background Skin disorders are widespread, and there is increasing demand for reliable, standardized herbal therapeutics. Kumkumadi Tailam, a classical Ayurvedic polyherbal oil formulation, incorporates several b...

Abstract Background We previously reported the first-in-human evaluation of 3-[18F]-fluoro-2,2-dimethylpropionic acid ([18F]FPIA) for imaging aberrant lipid metabolism and cancer detection. The first-generation semi-auto...

The green-light driven photocatalytic N-deethylation reaction of Rhodamine B (RhB) on a TiO2 film was investigated by UV-vis absorption and fluorescence emission spectroscopies, in addition to HPLC and HR-MS, to ascertai...

Foram analisadas as concentrações séricas de retinol de 16 éguas gestantes em haras de duas diferentes regiões de Minas Gerais (Vale do Rio Doce e Sul de Minas). Os animais foram mantidos em pastagens com sal minera...

Abstract A novel peptide having free radical scavenging activity was separated, using an on-line high-performance liquid chromatography (HPLC) - ABTS screening method, from bovine skim milk fermented by Lactococcus lacti...

Abstract Muscle-based by-products are often undervalued although commonly reported having a high amount of natural bioactive peptides. In this study, elastin was isolated from the protein of broiler hen skin while its hy...

IntroductionMenotropins is a mixture of gonadotropin glycoproteins extracted from the urine of postmenopausal women. Its composition is complex, with active components including follicle-stimulating hormone (FSH), lutein...

Current quality control patterns are limited to industrial application, for most the natural chemical reference substances are expensive and unavailable. Here in, quantitative analysis of multi-components with single mar...

As ormosílicas (sílicas organicamente modificadas) são materiais de impressão molecular (MIS) que têm surgido como sorventes mais seletivos para a extração em fase sólida (SPE). Nesta pesquisa foi avaliado o de...

A bioanalytical micromethod was described for the quantification of amphotericin B in plasma by HPLC. The method showed high absolute recovery, good linearity (0.1-10.0 μg/mL, r2 = 0.999), sensitivity (limits of quantif...

Se analizaron separadamente hojas y tallos de Ilex argentina con el objeto de determinar su contenido en cafeína, teofilina y teobromina. Se utilizó para ello la cromatografía líquida de alta performance (CLAP). Con ...

Rhizoma Paridis saponins (RPS) were considered to be the principal bioactive components of Paris polyphylla Smith var. yunnanensis. Intestinal microflora-mediated metabolism may affect their pharmacological activities in...

O produto seco por aspersão de Cecropia glazioui Sneth. (PCG) foi caracterizado qualitativamente através do perfil cromatográfico por cromatografia em camada delgada (CCD) e cromatografia líquida de alta eficiencia (...

Las plantas contienen un gran número de compuestos importantes por su valor nutricional y/o farmacológico. Entre esos últimos compuestos, algunos flavonoides tienen actividad estrogénica. En este trabajo se informa l...

Un método de cromatografía líquida de alta eficiencia (HPLC) fue desarrollado y validado para la determinación de difosfato de primaquina (PQ) en tabletas de liberación prolongada. Los parámetros de la validación ...

The aim of this work was to develope a dissolution test for nimesulide immediate release tablets in a medium that assure sink conditions. A solubility study was elaborate to assist in the selection of a dissolution mediu...