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https://hdl.handle.net/10216/120474
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DC Field | Value | Language |
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dc.creator | Amaro H.M. | |
dc.creator | Catarina Guedes A. | |
dc.creator | Preto M.A.C. | |
dc.creator | Sousa-Pinto I. | |
dc.creator | Xavier Malcata F. | |
dc.date.accessioned | 2019-05-31T16:16:08Z | - |
dc.date.available | 2019-05-31T16:16:08Z | - |
dc.date.issued | 2018 | |
dc.identifier.issn | 16603397 | |
dc.identifier.uri | https://hdl.handle.net/10216/120474 | - |
dc.description.abstract | The 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.sponsorship | Funding: 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.iso | eng | |
dc.publisher | MDPI | |
dc.relation.ispartof | Marine Drugs, vol. 16(9):327 | |
dc.rights | openAccess | |
dc.subject | alcohol | |
dc.subject | beta carotene | |
dc.subject | carotenoid | |
dc.subject | nutraceutical | |
dc.subject | polyunsaturated fatty acid | |
dc.subject | antioxidant | |
dc.subject | biological product | |
dc.subject | carotenoid | |
dc.subject | fatty acid | |
dc.subject | ABTS radical scavenging assay | |
dc.subject | antioxidant assay | |
dc.subject | Article | |
dc.subject | biomass production | |
dc.subject | chemical composition | |
dc.subject | chemical parameters | |
dc.subject | continuous pressurized solvent extraction | |
dc.subject | controlled study | |
dc.subject | DPPH radical scavenging assay | |
dc.subject | environmental impact | |
dc.subject | flow rate | |
dc.subject | Gloeothece | |
dc.subject | green chemistry | |
dc.subject | intermethod comparison | |
dc.subject | microalga | |
dc.subject | nonhuman | |
dc.subject | process optimization | |
dc.subject | solvent effect | |
dc.subject | solvent extraction | |
dc.subject | solvent volume | |
dc.subject | temperature dependence | |
dc.subject | ultrasound assisted extraction | |
dc.subject | biomass | |
dc.subject | chemistry | |
dc.subject | comparative study | |
dc.subject | cyanobacterium | |
dc.subject | dietary supplement | |
dc.subject | economics | |
dc.subject | isolation and purification | |
dc.subject | liquid liquid extraction | |
dc.subject | microalga | |
dc.subject | procedures | |
dc.subject | temperature | |
dc.subject | ultrasound | |
dc.subject | validation study | |
dc.subject | Antioxidants | |
dc.subject | Biological Products | |
dc.subject | Biomass | |
dc.subject | Carotenoids | |
dc.subject | Cyanobacteria | |
dc.subject | Dietary Supplements | |
dc.subject | Ethanol | |
dc.subject | Fatty Acids | |
dc.subject | Green Chemistry Technology | |
dc.subject | Liquid-Liquid Extraction | |
dc.subject | Microalgae | |
dc.subject | Temperature | |
dc.subject | Ultrasonic Waves | |
dc.title | Gloeothece sp. as a nutraceutical source-an improved method of extraction of carotenoids and fatty acids | |
dc.type | Artigo em Revista Científica Internacional | |
dc.contributor.uporto | CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental | |
dc.identifier.doi | 10.3390/md16090327 | |
dc.relation.publisherversion | http://dx.doi.org/10.3390/md16090327 | |
Appears in Collections: | CIIMAR - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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Amaro HM_2018.pdf | 6.81 MB | Adobe PDF | View/Open |
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