Optimization of date seed oil extraction using the assistance of hydrothermal and ultrasound technologies
| Autor: | A. Mrabet, G. Rodríguez-Gutiérrez, R. Guillén-Bejarano, R. Rodríguez-Arcos, M. Sindic, A. Jiménez-Araujo |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Grasas y Aceites, Vol 73, Iss 2 (2022) |
| Druh dokumentu: | article |
| ISSN: | 0017-3495 1988-4214 |
| DOI: | 10.3989/gya.0109211 |
| Popis: | The date seed is a by-product from the date industry. Its use as a source of added-value compounds is of great interest. Oil accounts for 5-13% of the seed’s weight. Soxhlet extraction with organic solvents is the traditional method for obtaining oil from seeds. In this work, hydrothermal pre-treatments and sonication are proposed to make the extraction a more environmentally friendly process. Factors such as sonication time and temperature and hexane-to-seed ratio (H/S) have been considered. Response surface methodology was applied for optimization. Hydrothermal treatments increased oil recovery. H/S was the most influential factor, and was close to 7 mL/g seeds for both samples. 71% recovery was achieved for native seeds after 15 min sonication at 45 ºC, and 80% for 180 ºC-treated seeds after 45 min at 35 ºC when compared to Soxhlet extraction. These conditions comply with our initial aim. Pre-treatments seem to have a negative effect on oil stability, although this observation needs to be confirmed. |
| Databáze: | Directory of Open Access Journals |
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