Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/120474
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dc.creatorAmaro H.M.
dc.creatorCatarina Guedes A.
dc.creatorPreto M.A.C.
dc.creatorSousa-Pinto I.
dc.creatorXavier Malcata F.
dc.date.accessioned2019-05-31T16:16:08Z-
dc.date.available2019-05-31T16:16:08Z-
dc.date.issued2018
dc.identifier.issn16603397
dc.identifier.urihttps://hdl.handle.net/10216/120474-
dc.description.abstractThe nutraceutical potential of microalgae boomed with the exploitation of new species and sustainable extraction systems of bioactive compounds. Thus, a laboratory-made continuous pressurized solvent extraction system (CPSE) was built to optimize the extraction of antioxidant compounds, such as carotenoids and PUFA, from a scarcely studied prokaryotic microalga, Gloeothece sp. Following "green chemical principles" and using a GRAS solvent (ethanol), biomass amount, solvent flow-rate/pressure, temperature and solvent volume-including solvent recirculation-were sequentially optimized, with the carotenoids and PUFA content and antioxidant capacity being the objective functions. Gloeothece sp. bioactive compounds were best extracted at 60?C and 180 bar. Recirculation of solvent in several cycles (C) led to an 11-fold extraction increase of ß-carotene (3C) and 7.4-fold extraction of C18:2 n6 t (5C) when compared to operation in open systems. To fully validate results CPSE, this system was compared to a conventional extraction method, ultrasound assisted extraction (UAE). CPSE proved superior in extraction yield, increasing total carotenoids extraction up 3-fold and total PUFA extraction by ca. 1.5-fold, with particular extraction increase of 18:3 n3 by 9.6-fold. Thus, CPSE proved to be an efficient and greener extraction method to obtain bioactive extract from Gloeothece sp. for nutraceutical purposes-with low levels of resources spent, while lowering costs of production and environmental impacts. © 2018 by the authors.
dc.description.sponsorshipFunding: This work was financially co-supported by: ZEBRALGRE (PTDC/CVT-WEL/5207/2014), founded by national funds through FCT supported by COMPETE 2020: Programa Operacional Competitividade e Internacionalização (POCI)-01-0145-FEDER-016797; by the Structured Program of R&D&I INNOVMAR—Innovation and Sustainability in the Management and Exploitation of Marine Resources, reference NORTE-01-0145-FEDER-000035, namely within the Research Line NOVELMAR—Novel marine products with biotechnological applications, within the R&D Institution CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), supported by the Northern Regional Operational Programme (NORTE2020), through the ERDF; and by DINOSSAUR—PTDC/BBB-EBB/1374/2014-POCI-01-0145-FEDER-016640, funded by FEDER funds through COMPETE2020—POCI and by national funds through FCT—Fundacão para a Ciência e a Tecnologia, I.P.
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofMarine Drugs, vol. 16(9):327
dc.rightsopenAccess
dc.subjectalcohol
dc.subjectbeta carotene
dc.subjectcarotenoid
dc.subjectnutraceutical
dc.subjectpolyunsaturated fatty acid
dc.subjectantioxidant
dc.subjectbiological product
dc.subjectcarotenoid
dc.subjectfatty acid
dc.subjectABTS radical scavenging assay
dc.subjectantioxidant assay
dc.subjectArticle
dc.subjectbiomass production
dc.subjectchemical composition
dc.subjectchemical parameters
dc.subjectcontinuous pressurized solvent extraction
dc.subjectcontrolled study
dc.subjectDPPH radical scavenging assay
dc.subjectenvironmental impact
dc.subjectflow rate
dc.subjectGloeothece
dc.subjectgreen chemistry
dc.subjectintermethod comparison
dc.subjectmicroalga
dc.subjectnonhuman
dc.subjectprocess optimization
dc.subjectsolvent effect
dc.subjectsolvent extraction
dc.subjectsolvent volume
dc.subjecttemperature dependence
dc.subjectultrasound assisted extraction
dc.subjectbiomass
dc.subjectchemistry
dc.subjectcomparative study
dc.subjectcyanobacterium
dc.subjectdietary supplement
dc.subjecteconomics
dc.subjectisolation and purification
dc.subjectliquid liquid extraction
dc.subjectmicroalga
dc.subjectprocedures
dc.subjecttemperature
dc.subjectultrasound
dc.subjectvalidation study
dc.subjectAntioxidants
dc.subjectBiological Products
dc.subjectBiomass
dc.subjectCarotenoids
dc.subjectCyanobacteria
dc.subjectDietary Supplements
dc.subjectEthanol
dc.subjectFatty Acids
dc.subjectGreen Chemistry Technology
dc.subjectLiquid-Liquid Extraction
dc.subjectMicroalgae
dc.subjectTemperature
dc.subjectUltrasonic Waves
dc.titleGloeothece sp. as a nutraceutical source-an improved method of extraction of carotenoids and fatty acids
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoCIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental
dc.identifier.doi10.3390/md16090327
dc.relation.publisherversionhttp://dx.doi.org/10.3390/md16090327
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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