Extração de óleo de café verde utilizando co-solvente
Coffee, an importante bean for 20th century brazilian economy, in addition to serving a drink that is highly appreciated all over the world, also has an oil with applicability in several industrial segments such as, for example, cosmetics and pharmaceuticals. This oil is mainly obtained by immersing...
| Principais autores: | Longo, Isabela Andrade, Assis, Rhamonn Pavelik de, Tanaka, Vithoria Gauglitz |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2021
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/23996 |
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| Resumo: |
Coffee, an importante bean for 20th century brazilian economy, in addition to serving a drink that is highly appreciated all over the world, also has an oil with applicability in several industrial segments such as, for example, cosmetics and pharmaceuticals. This oil is mainly obtained by immersing the grain in solvent, with hexane being the most used to present great molecular affinity with a lipid fraction. Despite having a high content, hexane is a toxic compound, creating a risk for the environment and health. For this reason, alternative solvents that are less toxic and have good oil spaces are sought, such as ethanol, a non-toxic solvent, sustainable, easily obtained and economically viable for the extraction of these oils. This project aimed to analyze the viability of ethanol as a co-solvent in the process of obtaining green coffee oil, through assisted ultrasonic extraction. With the construction of a kinetic extraction curve, it was possible to determine the optimal extraction time of 120 minutes for three solvent/co-solvent ratios. By varying the solvent/co-solvent ratio and the particle size of the sample, it was found that the best condition studied occurred with 25% ethanol and 75% hexane and a grain size of 0.7 mm resulting in an oil content of oil 5.95%. Therefore, the use of ethanol together with hexane is feasible, extracting a significant percentage of oil. In addition, there are indications that the ethanol process extracts polar compounds. |
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