Evaluación de la extracción de lípidos presentes en la borra de café utilizando un solvente alternativo
The spent coffee grounds, or also called SCG, are an abundant residue from the elaboration of the coffee drink, which has many components of interest to the industry such as lipids. In this work, the extraction of oil from the SCG using an alternative solvent different to hexane using the Soxhlet ex...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2020
- Institución:
- Universidad de América
- Repositorio:
- Lumieres
- Idioma:
- spa
- OAI Identifier:
- oai:repository.uamerica.edu.co:20.500.11839/8116
- Acceso en línea:
- https://hdl.handle.net/20.500.11839/8116
- Palabra clave:
- Borra de café
Extracción Soxhlet
Solventes
Spent coffee grounds
Soxhlet extraction
Solvents
Tesis y disertaciones académicas
- Rights
- License
- Atribución – No comercial – Compartir igual
| Summary: | The spent coffee grounds, or also called SCG, are an abundant residue from the elaboration of the coffee drink, which has many components of interest to the industry such as lipids. In this work, the extraction of oil from the SCG using an alternative solvent different to hexane using the Soxhlet extraction method is studied. Firstly, a bibliographic review was carried out in order to find the optimal conditions that have been worked in the lipid extraction process to obtain the highest yield (15.28%), the most effective method has been Soxhlet using hexane as solvent in an extraction time of 30.4 minutes; in addition, four possible solvents were studied (ethyl acetate, ethanol, propanol and isopropanol) that can replace hexane to decrease the environmental impact and its toxicity. For the development of the project, propanol was selected as alternative solvent through a Pugh matrix, in which the four previously mentioned solvents were evaluated, taking into account the criteria of toxicity, nature, performance, cost and acquisition. For the experimental procedure, the SCG sample was collected and the moisture was removed by drying it for 72 hours at 60°C; the moisture content was calculated by gravimetric analysis and a sieving process was carried out to observe the distribution of the particle sizes and calculate the average diameter. Oil was subsequently extracted from the dried sample using hexane and under optimal conditions to compare performance with the literature. The oil-solvent mixture was transferred to a rotary evaporator flask in order to purify the extract, and gas chromatography was performed to determine the lipid profile of the oil. |
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