Vegetable Oils And Fats
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. SALICILATOS COMO INIBIDORES DO PROCESSO OXIDATIVO MEDIADO POR COBRE E FERRO NO BIODIESEL B100
Biodiesel is a renewable fuel produced from vegetable oils and animal fats transesterification. However, due to its chemical characteristics, it is susceptible to oxidation causing losses to its manufacturers and users. In this work a series of salicylates were synthesized and employed as secondary antioxidants in biodiesel B100. The accelerated oxidation te
Química Nova. Publicado em: 2022
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2. Optimization of beef patties produced with vegetable oils: a mixture design approach and sensory evaluation
Abstract The exaggerated consumption of fast food and ready to eat products is a common practice which results in an unbalanced intake of saturated fats. In order to improve the fat composition of beef patties, mixture design was used to optimize the inclusion of pomace olive oil (POO) and canola oil (CO). Cooking yield, moisture retention, diameter reductio
Food Sci. Technol. Publicado em: 2020-06
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3. Appliance of a high pressure semi-batch reactor: supercritical transesterification of soybean oil using methanol
Abstract This work presents the results of a supercritical transesterification process of soybean oil using methanol, performed in a laboratory high pressure semi-batch reactor. A full description of the equipment and a standard operating procedure are also provided. Since fossil fuels are not renewable, biofuels such biodiesel, have gained attention over t
Food Sci. Technol. Publicado em: 31/01/2019
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4. ESTERIFICAÇÃO E TRANSESTERIFICAÇÃO HOMOGÊNEA DE ÓLEOS VEGETAIS CONTENDO ALTO TEOR DE ÁCIDOS GRAXOS LIVRES
The high free fatty acids content in some vegetable oils can have a negative impact in the sustainable production of biodiesel. The previous treatment of these feedstock oils can contribute to the reduction of the process total costs as well as the environment, turning the biodiesel a more competitive in relation to the fossil diesel. The aim of this work wa
Quím. Nova. Publicado em: 2018-01
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5. Energy utilization of by-products from the soybean oil industry by broiler chickens: acidulated soapstock, lecithin, glycerol and their mixture
Acidulated soy soapstock (ASS) and lecithin (LEC) are by-products from processing soy oil (SO) for human consumption, whereas glycerol (GLY) can be obtained through the transesterification of vegetable oils during the production of biodiesel. These are valuable by-products for poultry feeds that have been underutilized in many parts of the world. One study w
Rev. Bras. Cienc. Avic.. Publicado em: 2014-12
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6. Química e sustentabilidade: novas fronteiras em biocombustíveis
This contribution discusses the state of the art and the challenges in producing biofuels, as well as the need to develop chemical conversion processes of CO2 in Brazil. Biofuels are sustainable alternatives to fossil fuels for providing energy, whilst minimizing the effects of CO2 emissions into the atmosphere. Ethanol from fermentation of simple sugars and
Quím. Nova. Publicado em: 2013
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7. Determinação eletroquímica de glicerol em biodiesel por amperometria de múltiplos pulsos com eletrodo de ouro
Biodiesel is the fuel obtained from vegetable oils or animal fats that can partially or totally replace diesel oil. Besides being obtained from renewable sources, biodiesel is less polluting than diesel and biodegradable. One disadvantage of biodiesel is the byproduct of transesterification reaction of raw material, glycerol, which can cause damages to combu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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8. Use of ionic liquids in biodiesel production: a review
This paper discusses the feasibility of the use of ionic liquids as catalysts in the biodiesel production field, describing some studies already published in the literature on this theme. Ionic liquids are regarded as a new generation of catalysts in the chemical industry, with several uses in different commercial segments. However only a few publications in
Brazilian Journal of Chemical Engineering. Publicado em: 2012-03
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9. DESENVOLVIMENTO DE UM PROCESSO CONTÍNUO PARA PRODUÇÃO DE BIODIESEL A BAIXAS TEMPERATURAS. / DEVELOPMENT OF A CONTINUOUS PROCESS FOR PRODUCING BIODIESEL AT LOW TEMPERATURES.
Biodiesel has emerged worldwide as a promising alternative to oil-derived mineral fuels. It is biodegradable, renewable, obey to the carbon cycle and can be defined as fatty acid monoalquyl esters derived from renewable sources, such as vegetable oils and animal fats. It can be produced from a transesterification reaction, in which there is the transformatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
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10. Uso da espectrometria de massas como ferramenta metabolômica e controle de qualidade de óleos vegetais e gorduras animais / Use of mass spectrometry as a metabolomic tool and quality control of vegetable oils and animal fats
Este trabalho direcionou-se ao controle de qualidade de óleos vegetais e gorduras animais pelo emprego de análise de baixa massa molecular pela técnica EASI-MS utilizando a ferramenta metabolômica. As matérias-primas graxas (óleos e gorduras vegetais e animais) e os produtos sintetizados a partir destes insumos são misturas complexas, com aplicações
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/03/2011
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11. Glicerol: um breve histórico e aplicação em sínteses estereosseletivas
Presently glycerol is considered a co-product of biodiesel industry. As the biodiesel production is exponentially increasing, glycerol generated from the transesterification of vegetable oils and fats is also being produced on a large scale, and turned out to be essential seeking for novel alternatives to the consumption of the extra volume, in crude and/or
Química Nova. Publicado em: 2011
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12. Produção de monoéster via etanólise por hidrotalcitas termoativadas : síntese e caracterização
Among biofuels of the 1st generation, biodiesel stands out for its equivalent features to those of mineral diesel, however less polluting. It can be obtained by transesterification of triglyceride fats or vegetable oils by (m)ethanolysis. Aiming at improving the chemical process, different types of catalysis have been studied: i) homogeneous (acid e.g. H2SO4
Publicado em: 2011