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Quality parameters and lipid composition of oil extracted from spent coffee grounds: a promising alternative to vegetable oils used for consumption and cosmetic purposes

2024Journal article Restricted access
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dc.contributor.authorSakouhi, Faouzi
dc.contributor.authorSaadi, Chaima
dc.contributor.authorOmrani, Ikbel
dc.contributor.authorBOUKHCHINA, SADOK
dc.contributor.authorRodríguez Solana, Raquel
dc.date.accessioned2024-03-12T10:51:28Z
dc.date.available2024-03-12T10:51:28Z
dc.date.issued2024
dc.description.abstractCoffee grounds are the most commonly generated daily waste in the world, raising numerous questions regarding their proper management and their environmental impact. The present study focuses on the physical and chemical characterization of oil extracted from spent coffee grounds (SCG), with the aim of valorizing this by-product as a potential source for oil production. The results obtained from the analysis of SCG oil were also compared to those of some edible oils (soybean, corn, and sunflower oils) and cosmetic oils (lentisc, sweet almond, and castor oils). The results revealed that spent coffee waste yielded an important amount of oil, specifically 17.19%, as compared to corn (4.31%) and soybean (19.52%) seeds. Regarding the fatty acids composition of SCG oil, eight components were identified, with a high percentage of polyunsaturated fatty acids accounting for more than 45% of total fatty acids. The phytosterols composition of SCG oil revealed the presence of seven components, with beta-sitosterol being the predominant one. The tocopherol analysis showed that SCG oil contained only alpha and beta isomers, with beta-tocopherol being the dominant form at over 68%. These findings accentuate the potential of spent coffee waste as a promising alternative for oil production and open up new applications for SCG oil, such as in the food industry, pharmaceutical applications, and cosmetics.Practical Application: Given the significant increase in the demand for vegetable oils, the oil industry has recently begun to explore new plant matrices, particularly those having low costs. SCG are the most commonly generated daily by-product in the world. The present investigation aims to characterize and valorize the oil extracted from SCG. The obtained results revealed the potential of SCG as a promising alternative for oil production. Consequently, valorizing spent coffee waste as a natural by-product for oil production can be an ideal solution to address numerous issues related to its proper management and its environmental impact. Hence, the oil industry can promote spent coffee waste, cheapest by-products, as a promising alternative for oil production. Moreover, the present investigation represents a commendable model of the circular economy since the remaining waste obtained after extracting lipids from the coffee grounds waste can be used as natural fertilizer rich in protein for plant development. In Tunisia, the annual quantity of spent coffee grounds (SCG) is estimated to reach 40 000 tons. In the current investigation, a Soxhlet extractor was used to extract oil from SCG. GC-MS and HPLC techniques were utilized to characterize the fatty acids, phytosterols, and tocopherols present in the SCG oil. The results obtained open up new applications for SCG oil. imagept_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1002/ejlt.202300230pt_PT
dc.identifier.issn1438-7697
dc.identifier.urihttp://hdl.handle.net/10400.1/20487
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.subjectOil yieldpt_PT
dc.subjectPhytosterolspt_PT
dc.subjectSpent coffee groundspt_PT
dc.subjectTocopherolspt_PT
dc.subjectValorizationpt_PT
dc.titleQuality parameters and lipid composition of oil extracted from spent coffee grounds: a promising alternative to vegetable oils used for consumption and cosmetic purposespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage2300230pt_PT
oaire.citation.titleEuropean Journal of Lipid Science and Technologypt_PT
person.familyNameRodríguez Solana
person.givenNameRaquel
person.identifier624004
person.identifier.ciencia-idFE10-7889-0562
person.identifier.orcid0000-0003-4204-7387
person.identifier.ridI-6317-2015
person.identifier.scopus-author-id55081917100
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione54528cf-d25d-424e-b395-5f41019f05ee
relation.isAuthorOfPublication.latestForDiscoverye54528cf-d25d-424e-b395-5f41019f05ee

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