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 (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%.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Parniakov O,Apicella E,Koubaa M,Barba FJ,Grimi N,Lebovka N,Pataro G,Ferrari G,Vorobiev Edoi
10.1016/j.biortech.2015.09.020subject
Has Abstractpub_date
2015-12-01 00:00:00pages
262-7eissn
0960-8524issn
1873-2976pii
S0960-8524(15)01291-2journal_volume
198pub_type
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