Lipids Extraction
Mostrando 1-12 de 132 artigos, teses e dissertações.
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1. EXTRAÇÃO ASSISTIDA POR ULTRASSOM PARA DETERMINAÇÃO DE LIPÍDEOS EM ALIMENTOS: UM EXPERIMENTO DE LABORATÓRIO
The ultrasound-assisted extraction (UAE) is an alternative approach for the total lipid content determination in food samples. The high extraction efficiency, being less time-consuming and with the possibility of using less toxic solvents are the main advantages of UAE. It is, thus, an excellent alternative to be applied as a laboratory experiment for underg
Quím. Nova. Publicado em: 2020-09
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2. A Protocol for Fish Lipid Analysis Using Nuclear Magnetic Resonance Spectroscopy
This article reports on an easy-to-follow methodology for fish lipids analysis, including the biological sample collection, lipid extraction, sample preparation, nuclear magnetic resonance (NMR) spectroscopy analysis and statistical data analysis, with details on parameters used for the NMR analysis and the care needed in each step execution. As an example o
J. Braz. Chem. Soc.. Publicado em: 2020-04
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3. DISRUPTION OF Nannochloropsis gaditana (EUSTIGMATOPHYCEAE) RIGID CELL WALL BY NON-THERMAL PLASMA PRIOR TO LIPID EXTRACTION AND ITS EFFECT ON FATTY ACID COMPOSITION
Abstract This study assessed the effect of non-thermal plasma (NTP) on Nannochloropsis gaditana cell rupture and subsequent lipid extraction. Micrograph images showed that the surface of original N. gaditana cells appeared smooth and had no apparent holes, whereas after NTP the cells showed a non-uniform apparently fractured surface with many pores and large
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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4. STUDY OF LIPID BIOMARKERS OF PATIENTS WITH POLYPS AND COLORECTAL CÂNCER
RESUMO CONTEXTO: O câncer colorretal (CCR) é, mundialmente, uma das principais causas de câncer. Métodos de diagnóstico precoce através de biomarcadores séricos são necessários. O estudo das ômicas, mais recentemente a lipidômica, tem a finalidade de analisar os lipídeos para melhor compreensão do lipidoma humano. A evolução dos métodos de
Arq. Gastroenterol.. Publicado em: 28/11/2019
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5. Characterization of Seed Oils of Pterodon emarginatus Vogel (Sucupira) Obtained by Different Extraction Methods
Abstract The present study aims to evaluate the influence of extraction methods on the quality of bioactive compounds and antioxidant capacity in Pterodon emarginatusVogel (sucupira) oils. The oils were extracted from the sucupira seeds by Soxhlet and by the extraction system of Bligh & Dyer. The oils were analyzed as to fatty acid profile, tocopherols, phyt
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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6. Eugenia Klotzschiana O. Berg Fruits as New Sources of Nutrients: Determination of their Bioactive Compounds, Antioxidant Activity and Chemical Composition
Abstract: The Cerrado is one of the world's biodiversity hotspots and Brazil’s second largest biome. Many native species of the Brazilian Cerrado provide fruits that have unique sensory characteristics and high nutritional value. This study aimed at characterizing the pulp of Eugenia klotzschiana O. Berg, concerning its proximal composition, bioactive comp
Braz. arch. biol. technol.. Publicado em: 13/06/2019
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7. Farinhas e subprodutos da laranja sanguínea-de-mombuca: caracterização química e aplicação em sorvete
Resumo No presente estudo, foram caracterizados os componentes químicos de flavedo, albedo, semente, bagaço e das farinhas obtidas da laranja Citrus sinensis L. Osbeck sanguínea- de-mombuca e as farinhas foram utilizadas na substituição de gordura em sorvete. Foram desenvolvidas quatro formulações de sorvete de chocolate com diferentes concentrações
Braz. J. Food Technol.. Publicado em: 13/06/2019
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8. Lipid Profile Determination by Direct Infusion ESI-MS and Fatty Acid Composition by GC-FID in Human Milk Pools by Folch and Creamatocrit Methods
Human milk (HM) is extremely important to the baby, containing a varied and balanced range of nutrients fundamental to the ideal development of the newborn. Among these nutrients, HM lipids provide 40-60% of the energy. In HM banks, the creamatocrit method is employed as a quick and solvent-free tool, however, since Folch methodology is considered reference
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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9. Using a Multivariate Approach to Compare Lipid Extraction Protocols from Microalgae Scenedesmus sp.
Microalgae lipid-derived biofuels is considered promising candidates for substitution of petroleum-based energy sources. However, the lipid extraction from the algal biomass stands as a challenge due to its low yields and cost-intensive cell disruption procedures. In this study a multivariate optimization of the extraction conditions was suggested, aiming a
J. Braz. Chem. Soc.. Publicado em: 2019-03
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10. FATTY ACID ETHYL ESTERS FROM MICROALGAE OF Scenedesmus ecornis BY ENZYMATIC AND ACID CATALYSIS
Microalgae are an indispensable food source for the various growth stages of mollusks, crustaceans, and several fish species. Using a microalgae biomass present in the Amazonian ecosystem (Macapá-AP), we study extraction methods for fatty acid such as solvent extraction (magnetic stirring and/or Soxhlet) and/or hydrolysis (acid and/or enzymatic catalysis) f
Quím. Nova. Publicado em: 2018-01
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11. In vitro rumen fermentation and effect of protein fractions of canola meals on methane production
ABSTRACT: Canola provides oil for human consumption and a by-product from the extraction of its oil canola meal (CM), is used as a good quality protein and lipid supplement for ruminants. The aim of this study was to determine the chemical composition and fermentation profile associated with the potential for methane production of three types of CM: solvent-
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-01
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12. Chemometric Analysis of UV Characteristic Profile and Infrared Fingerprint Variations of Coffea arabica Green Beans under Different Space Management Treatments
Ultraviolet characteristic profiles and infrared spectroscopic (FTIR) fingerprints of green bean extracts of Coffea arabica L., cv. IAPAR 59, cultivated in two planting patterns, rectangular and square, and at two different densities, 10,000 and 6,000 plants ha-1, identified as R10, R6, S10, and S6 were analyzed with principal component and hierarchical clus
J. Braz. Chem. Soc.. Publicado em: 2016-06