Alternative oil extraction methods from Echium plantagineum L. seeds using advanced techniques and green solvents.
Food Chem
; 244: 75-82, 2018 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-29120808
ABSTRACT
The edible oil processing industry involves large losses of organic solvent into the atmosphere and long extraction times. In this work, fast and environmentally friendly alternatives for the production of echium oil using green solvents are proposed. Advanced extraction techniques such as Pressurized Liquid Extraction (PLE), Microwave Assisted Extraction (MAE) and Ultrasound Assisted Extraction (UAE) were evaluated to efficiently extract omega-3 rich oil from Echium plantagineum seeds. Extractions were performed with ethyl acetate, ethanol, water and ethanolwater to develop a hexane-free processing method. Optimal PLE conditions with ethanol at 150⯰C during 10â¯min produced a very similar oil yield (31.2%) to Soxhlet using hexane for 8â¯h (31.3%). UAE optimized method with ethanol at mild conditions (55⯰C) produced a high oil yield (29.1%). Consequently, advanced extraction techniques showed good lipid yields and furthermore, the produced echium oil had the same omega-3 fatty acid composition than traditionally extracted oil.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Sementes
/
Solventes
/
Óleos de Plantas
/
Echium
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article