Optimization of date seed oil extraction using the assistance of hydrothermal and ultrasound technologies

Authors

DOI:

https://doi.org/10.3989/gya.0109211

Keywords:

Date seed, Hydrothermal technology, Oil extraction, Oxidation stability, Response surface methodology, Sonication

Abstract


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.

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Published

2022-05-17

How to Cite

1.
Mrabet A, Rodríguez-Gutiérrez G, Guillén-Bejarano R, Rodríguez-Arcos R, Sindic M, Jiménez-Araujo A. Optimization of date seed oil extraction using the assistance of hydrothermal and ultrasound technologies. grasasaceites [Internet]. 2022May17 [cited 2022Oct.6];73(2):e457. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1929

Issue

Section

Research

Funding data

Université de Liège
Grant numbers P.AGABQSP01-02 (A.M.)

Ministerio de Ciencia e Innovación
Grant numbers Project 25/Section II-2019;PCI2020-112088

Agencia Estatal de Investigación
Grant numbers Project 25/Section II-2019;PCI2020-112088

European Commission
Grant numbers Project 25/Section II-2019;PCI2020-112088