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Testou-se a utilização do CO2 supercrítico na extração seletiva de compostos oxigenados (linalol e acetato de linalila) contidos no óleo essencial de bergamota (Citrus bergamia Risso), var. bergamia, adsorvido em sílica gel contendo baixo teor de limoneno e bergapteno. A densidade do dióxido de carbono e a temperatura de extração foram otimizadas, e os extratos obtidos foram analisados por cromatografia. Nas condições estudadas, observou-se uma redução de 72% no teor de limoneno e 92,5% para o bergapteno, sendo extraídos 52% de linalol e 69,4% de acetato de linalila. The use of supercritical CO2 was tested in the selective extraction of the limonene contained in the bergamot essential oil (Citrus bergamia Risso), var. bergamia, and posterior concentration of the oxygenated fraction (linalool and linalyl acetate) with reduced bergapten. It was used silica gel as adsorbent to improve the fractionation between the components of interest. It was tested, firstly, the extraction temperature and carbon dioxide density ideals for the removal of the limonene. Then, in a second stage was determined the best temperature and density for the linalool and linalyl acetate extraction with reduced bergapten. After extraction, the essential oil extract with 52% of linalool and 69.4% linalyl acetate had 72% less limonene and 92.7 less bergapten

Redução do teor de limoneno e bergapteno do óleo essencial de bergamota adsorvido em sílica gel pelo CO2 - supercrítico