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Article Dans Une Revue Bioresource Technology Année : 2015

Ultrasound-assisted green solvent extraction of high-added value compounds from microalgae Nannochloropsis spp.

Résumé

The aim of this work was to investigate ultrasound (US)-assisted green solvent extraction of valuable compounds from the microalgae Nannochloropsis spp. Individual green solvents (water, ethanol (EtOH), dimethyl sulfoxide (DMSO)) and binary mixture of solvents (water-DMSO and water-EtOH) were used for the extraction procedures. Maximum total phenolic compounds yield (Yp ≈ 0.33) was obtained after US pre-treatment (W = 400 W, 15 min), being almost 5-folds higher compared to that found for the untreated samples and aqueous extraction (Yp ≈ 0.06). The highest yield of total chlorophylls (Yc ≈ 0.043) was obtained after US (W = 400 W, 7.5 min), being more than 9-folds higher than those obtained for the untreated samples and aqueous extraction (Yc ≈ 0.004). The recovery efficiency decreased as DMSO > EtOH > H2O. The optimal conditions to recover phenolic compounds and chlorophylls from microalgae were obtained after US pre-treatment (400 W, 5 min), binary mixtures of solvents (water-DMSO and water-EtOH) at 25–30%, and microalgae concentration of 10%.
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Dates et versions

hal-02614716 , version 1 (21-05-2020)

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Oleksii Parniakov, Elda Apicella, Mohamed Koubaa, Francisco J. Barba, N. Grimi, et al.. Ultrasound-assisted green solvent extraction of high-added value compounds from microalgae Nannochloropsis spp.. Bioresource Technology, 2015, 198, pp.262-267. ⟨10.1016/j.biortech.2015.09.020⟩. ⟨hal-02614716⟩
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