Extration For Solvent
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Extração de oleos volateis e outros compostos com CO2 supercritico : desenvolvimento de uma metodologia de aumento de escala a partir da modelagem matematica do processo e avaliação dos extratos obtidos / Extration of volateis oils and other composites with Co2 supercriticize : development of a methodology of increase of scale from the matematica modeling of the process and evaluation of gotten extracts
The recovery of extracts from vegetable raw materials with supercritical technology was studied, in order to optimize the process and quality of the products. Three plants were submitted to extraction processes with supercritical carbon dioxide: clove, spiked pepper and vetiver. The yields and compositions of the products obtained by supecritical fluid extra
Publicado em: 2005
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2. Recuperação de acidos graxos livres em resina de troca ionica. / Recuperation of free fatty acids in ion exchange resins.
The drastic operational conditions used in the chemical or physical refining of edible oils can in some cases lead to losses of nutraceutical compounds, high losses of neutral oil or even to the darkening of the end product. Liquid-liquid extration can be used as an alternative refining process, since mild operation conditions are employed in this case. But
Publicado em: 2005
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3. Desacidification of the oil of bran of rice for extration liquid-liquid. / Desacidificação do oleo de farelo de arroz por extração liquido-liquido.
The objective of this work was to evaluate the rice bran oil deacidification process by liquid-liquid extraction (LLE), in a continuous equipment, using aqueous ethanol as solvent. The alternative process was evaluated in terms of: ability to extract the free fatty acids; ability to minimize the neutral oil loss and, ability to preserve nutraceutical compoun
Publicado em: 2004
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4. Obtenção e avaliação de curcumina a partir de rizomas secos de curcuma (Curcuma longa L.)
An investigation was undertaken to obtain the natural colorant - curcumin, of yellow colour, from rhizomes of turmeric (Curcuma longa L.). The colorant was obtained as turmeric oleoresin and crystals of curcumin. The stability of turmeric oleoresin and curcumin was studied in function of the effects of temperature (50°C to 125°C), pH (2,4 to 7,7) and light
Publicado em: 1993