Results: 34

Multivariate statistical analysis of the essential oils of five Beilschmiedia species from Peninsular Malaysia

Identification of the chemical compositionof essential oils is very important for ensuring the quality of finished herbal products. The objective of the study was to analyze the chemical components present in the essential oils of five Beilschmiediaspecies (i.e. B. kunstleri, B. maingayi, B. penangiana,...

Contenido de grasa saturada y trans en panes de panaderías de la ciudad de Medellín, Colombia

Rev. chil. nutr; 47 (2), 2020
ANTECEDENTES: Se desconoce el contenido de grasas saturada (GS) y trans (Gtrans) en panes sin etiqueta y sin vigilancia por entidad regulatoria de Colombia. PROPÓSITO: Comparar el contenido de GS y Gtrans en panes de algunas panaderías de Medellín con lo reglamentado: 0,5 g/50 g de pan, para ambos ti...

Bisfenol-A: cuantificacion en orina de mujeres embarazadas por cromatografia gaseosa-espectrometria de masa

El uso de bisfenol-A (BPA) a nivel de la industria global se ha venido incrementando en los ultimos anos, y fueron los mercados emergentes los impulsores de esta demanda creciente. Las aplicaciones de BPA en la industria de los alimentos y bebidas representan solo del 3 al 4% del consumo global de polica...

Estudo longitudinal da halitose por meio da cromatografia gasosa

RFO UPF; 24 (2), 2019
Objetivos: correlacionar os exames organolépticos (método subjetivo) e a cromatografia gasosa (método objetivo) para diagnóstico conclusivo da halitose e avaliar o comportamento dos compostos sulfurados voláteis (CSVs) durante o manuseio clínico desta patologia. Metodologia: estudo longitudinal com...

Persistence of malathion used in dengue control on household surfaces

Arq. Inst. Biol; 86 (), 2019
Dengue is a viral infection transmitted by the mosquito Aedes aegypti. In Brazil, one of the insecticides used to control the mosquito is malathion, which can be diluted in vegetable oil (1:2 v/v). The purpose of this study was to understand the persistence of malathion on different surfaces and soil. Su...

Biocidal effect of a hexane-soluble extract of Lippia graveolens Kunth (Verbenaceae)

Lippia graveolens Kunth (Verbenaceae) is an economically important shrub known in Mexico as Oregano. In this work, the biocidal effect of the hexane extract of L. graveolens leaves was evaluated on two crop pests. Thus, larvae of Spodoptera frugiperda were fed with mixtures of extract and artificial diet...

Zaluzania montagnifolia: essential oil composition and biological properties

The chemical composition of the seasonal essential oils (2015-2016) from the leaves and flowers of Zaluzania montagnifolia is presented. The chemical content of those oils showed quantitative and qualitative differences. Germacrene D (19.9-29.8%), camphor (12.4- 19.4%) and β-caryophyllene (13.7-18.5%) w...

Chemical composition of essential oil from leaves of Ocotea limae Vattimo Gil. and Ocotea gardneri (Meisn. ) Mez. growing wild in Atlantic forest of North-Eastern Brazil

Essential oils from leaves of Ocotea limae and Ocotea gardneri species were analyzed by GC-FID and GC-MS. The analysis revealed the presence of 48 components accounting for 98.1 ± 1.3% e 98.0 ± 0.5% of the essential oils from the O. limae and O. gardneri, respectively. The oils were characterized by hi...

Chemical constituents and insecticidal activity of essential oil of Paullinia pinnata L (Sapindaceae)

The chemical constituents and insecticidal activity of essential oil obtained by hydrodistillation of the leaves of Paullinia pinnata Linn (Sapindaceae) are being reported. The essential oil were analysed by using gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC-MS). Diff...

Essential oil composition, carotenoid profile, antioxidant and antimicrobial activities of the parasitic plant Cuscuta mitraeformis

The chemical composition of the essential oil and carotenoid content of the parasitic plant Cuscuta mitraeformis are described for the first time. The essential oil was analyzed by GC-FID and GC-MS revealing nonanal (24.6%) as the main constituent followed by thymol (16.5%) and eugenol (7.5%). The total ...