Optimisation of Ultrasound Frequency, Extraction Time and Solvent for the Recovery of Polyphenols, Phlorotannins and Associated Antioxidant Activity from Brown Seaweeds

DC FieldValueLanguage
dc.contributor.authorUmmat, Viruja-
dc.contributor.authorTiwari, Brijesh K.-
dc.contributor.authorJaiswal, Amit K.-
dc.contributor.authorCondon, Kevin-
dc.contributor.authorGarcía-Vaquero, Marco-
dc.contributor.authorO'Doherty, John V.-
dc.contributor.authorO'Donnell, C. P. (Colm P.)-
dc.contributor.authorRajauria, Gaurav-
dc.date.accessioned2021-02-17T10:40:24Z-
dc.date.available2021-02-17T10:40:24Z-
dc.date.copyright2020 the Authorsen_US
dc.date.issued2020-05-11-
dc.identifier.citationMarine Drugsen_US
dc.identifier.issn1660-3397-
dc.identifier.urihttp://hdl.handle.net/10197/11956-
dc.description.abstractThis study investigates ultrasound assisted extraction (UAE) process parameters (time, frequency and solvent) to obtain high yields of phlorotannins, flavonoids, total phenolics and associated antioxidant activities from 11 brown seaweed species. Optimised UAE conditions (35 kHz, 30 min and 50% ethanol) significantly improved the extraction yield from 1.5-fold to 2.2-fold in all seaweeds investigated compared to solvent extraction. Using ultrasound, the highest recovery of total phenolics (TPC: 572.3 ± 3.2 mg gallic acid equivalent/g), total phlorotannins (TPhC: 476.3 ± 2.2 mg phloroglucinol equivalent/g) and total flavonoids (TFC: 281.0 ± 1.7 mg quercetin equivalent/g) was obtained from Fucus vesiculosus seaweed. While the lowest recovery of TPC (72.6 ± 2.9 mg GAE/g), TPhC (50.3 ± 2.0 mg PGE/g) and TFC (15.2 ± 3.3 mg QE/g) was obtained from Laminaria digitata seaweed. However, extracts from Fucus serratus obtained by UAE exhibited the strongest 1,1-diphenyl-2-picryl-hydrazyl (DPPH) scavenging activity (29.1 ± 0.25 mg trolox equivalent/g) and ferric reducing antioxidant power (FRAP) value (63.9 ± 0.74 mg trolox equivalent/g). UAE under optimised conditions was an effective, low-cost and eco-friendly technique to recover biologically active polyphenols from 11 brown seaweed species.en_US
dc.description.sponsorshipScience Foundation Irelanden_US
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.rightsThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectUltrasound assisted extractionen_US
dc.subjectConventional extractionen_US
dc.subjectPolyphenolsen_US
dc.subjectPhlorotanninen_US
dc.subjectMacroalgaeen_US
dc.subjectAntioxidant capacityen_US
dc.titleOptimisation of Ultrasound Frequency, Extraction Time and Solvent for the Recovery of Polyphenols, Phlorotannins and Associated Antioxidant Activity from Brown Seaweedsen_US
dc.typeJournal Articleen_US
dc.internal.authorcontactothermarco.garciavaquero@ucd.ieen_US
dc.statusPeer revieweden_US
dc.identifier.volume18en_US
dc.identifier.issue5en_US
dc.citation.otherArticle Number: 250en_US
dc.identifier.doi10.3390/md18050250-
dc.neeo.contributorUmmat|Viruja|aut|-
dc.neeo.contributorTiwari|Brijesh K.|aut|-
dc.neeo.contributorJaiswal|Amit K.|aut|-
dc.neeo.contributorCondon|Kevin|aut|-
dc.neeo.contributorGarcía-Vaquero|Marco|aut|-
dc.neeo.contributorO'Doherty|John V.|aut|-
dc.neeo.contributorO'Donnell|C. P. (Colm P.)|aut|-
dc.neeo.contributorRajauria|Gaurav|aut|-
dc.date.updated2020-05-12T11:30:31Z-
dc.identifier.grantid6/RC/3889-
dc.identifier.grantid14/IA/2548]-
dc.rights.licensehttps://creativecommons.org/licenses/by/3.0/ie/en_US
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:Biosystems and Food Engineering Research Collection
Agriculture and Food Science Research Collection
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