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RESEARCH PRODUCT
Ultrasound-assisted green solvent extraction of high-added value compounds from microalgae Nannochloropsis spp.
Oleksii ParniakovFrancisco J. BarbaEugène VorobievNikolai LebovkaGianpiero PataroNabil GrimiMohamed KoubaaE. ApicellaGiovanna Ferrarisubject
ChlorophyllEnvironmental Engineering[SDV.BIO]Life Sciences [q-bio]/Biotechnology[SDV]Life Sciences [q-bio]BioengineeringUltrasound assistedchemistry.chemical_compoundPhenolsMicroalgae; Nannochloropsis; Ultrasound-assisted extraction; Phenolic compounds; ChlorophyllsMicroalgae[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process EngineeringDimethyl SulfoxideUltrasonicsNannochloropsisSolvent extractionWaste Management and DisposalEthanolAqueous solutionbiologyEthanolRenewable Energy Sustainability and the EnvironmentDimethyl sulfoxideExtraction (chemistry)General MedicineChlorophyllsbiology.organism_classificationPhenolic compoundsChemical engineeringchemistryYield (chemistry)Ultrasound-assisted extractionSolvents[SDV.AEN]Life Sciences [q-bio]/Food and NutritionNannochloropsisNuclear chemistrydescription
Abstract 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 ( Y p ≈ 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 ( Y p ≈ 0.06). The highest yield of total chlorophylls ( Y c ≈ 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 ( Y c ≈ 0.004). The recovery efficiency decreased as DMSO > EtOH > H 2 O. 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%.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-12-01 | Bioresource technology |