Extracts from the edible insects Acheta domesticus and Tenebrio molitor with improved fatty acid profile due to ultrasound assisted or pressurized liquid extraction
2020
Otero, Paz | Gutiérrez-Docio, Alba | Navarro del Hierro, Joaquín | Reglero, Guillermo | Martín, Diana | Comunidad de Madrid | Ministerio de Educación, Cultura y Deporte (España)
Extracts from the edible insects Acheta domesticus and Tenebrio molitor were obtained by ultrasound-assisted extraction (UAE) and pressurized-liquid extraction (PLE) using ethanol (E) or ethanol:water (E:W). Extraction yield, fatty acid profile, nutritional impact and cholesterol content were determined and compared with the initial insects. The highest extraction yield corresponded to PLE-T. molitor extracts. A decrease in total saturated fatty acid (SFA) and monounsaturated fatty acid (MUFA) contents, and an increase in the total polyunsaturated fatty acid (PUFA) content were observed for both UAE-E:W insect extracts, due to an enrichment in linoleic acid. The lipid indices (PUFA/SFA ratio, atherogenic and thrombogenic indices) for both UAE-E:W extracts were significantly improved compared with the initial insects. Although either extraction procedure led to cholesterol enrichment, the UAE-E:W conditions favoured the lowest concentration. Therefore, insects extracts with improved fatty acid profile can be selectively obtained, being UAE-E:W conditions preferred from the nutritional point of view.
Afficher plus [+] Moins [-]This work was supported by the Community of Madrid, Spain (ALIBIRD2020-CM, S2018/BAA-4343). Paz Otero thanks the Comunidad de Madrid for funding his Postdoctoral Grant (Atraccion de Talento 2016-T2/BIO-1791). Joaquín Navarro del Hierro thanks the Ministerio de Educación, Cultura y Deporte for funding his research with a FPU predoctoral contract (FPU 15/04236).
Afficher plus [+] Moins [-]Peer reviewed
Afficher plus [+] Moins [-]Mots clés AGROVOC
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