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Phycobiliproteins, nitrogenous compounds and fatty acid contents in field-collected and cultured gametophytes of Porphyra dioica, a red sea vegetable

2019-12Journal article Restricted access
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dc.contributor.authorE, Varela-Álvarez
dc.contributor.authorTobin, Paul R.
dc.contributor.authorGuiheneuf, Freddy
dc.contributor.authorFitzGerald, Richard J.
dc.contributor.authorStengel, Dagmar B.
dc.date.accessioned2020-07-24T10:50:47Z
dc.date.available2020-07-24T10:50:47Z
dc.date.issued2019-12
dc.description.abstractThe extensive variation in the biochemical composition of algal species is used as a source of potential bioactive compounds for applications in the agri-food industry and in the field of functional foods. Among these species, Porphyra/Pyropia spp. (nori, laver) are red sea vegetables which provide the foundation for a billion-dollar industry. In this study, we determine the growth and biochemical composition of distinct reproductive traits (females vs. males) in Porphyra dioica. In order to characterize and enhance through cultivation the bioactive profiles and biochemical composition of this sea vegetable, we determined the effects of environmental parameters (light and nutrients) on the growth of different life history traits (females vs. males) in cultured and field samples of P. dioica. In field-collected samples, females contained higher contents of phycoerythrin (9.71 ± 3.13 mg g−1 DW), PUFA (omega-3 fatty acids, 12.25 ± 0.78 mg g−1 DW; eicosapentaenoic acid, 11.54 ± 0.92 mg g−1 DW) and total fatty acids (TFA) (31.58 ± 2.5 mg g−1 DW) than males. The total nitrogen (TN) content was similar in both traits in the field, but the protein nitrogen (PN) was higher in males from field collections (42.80 mg g−1 DW). In culture, males and females responded differently to applied environmental factors, with an increase of some omega-6 fatty acids (e.g. 20:4 n-6 with an increase of 4.98 %TFA, 0.1 mg g−1 DW) in females and omega-7,9 fatty acids in males (increase of 13.75 %TFA, 0.79 mg g−1 DW in omega-7 and 1.59 %TFA in omega-9) associated with exposure to adverse conditions (N starvation under low light intensity). We discuss the possibility of using P. dioica as a promising source of functional new food products such as enriched nori in bioactive compounds such as monounsaturated and polyunsaturated fatty acids.
dc.description.sponsorshipDepartment of Agriculture, Food and the Marine (Ireland) [13/F/536]
dc.identifier.doi10.1007/s10811-019-01841-6
dc.identifier.issn0921-8971
dc.identifier.issn1573-5176
dc.identifier.urihttp://hdl.handle.net/10400.1/14154
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.subjectConchocelis-phase
dc.subjectLight-intensity
dc.subjectRhodophyta
dc.subjectTemperature
dc.subjectBangiales
dc.subjectGrowth
dc.subjectVariability
dc.subjectMacroalgae
dc.subjectActivation
dc.subjectStarvation
dc.titlePhycobiliproteins, nitrogenous compounds and fatty acid contents in field-collected and cultured gametophytes of Porphyra dioica, a red sea vegetable
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage3860
oaire.citation.issue6
oaire.citation.startPage3849
oaire.citation.titleJournal of Applied Phycology
oaire.citation.volume31
person.familyNameVarela-Álvarez
person.givenNameElena
person.identifier.orcid0000-0001-7262-3475
person.identifier.ridM-4495-2013
person.identifier.scopus-author-id6507326527
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationef711891-6a98-415b-8eed-e2e45f176b80
relation.isAuthorOfPublication.latestForDiscoveryef711891-6a98-415b-8eed-e2e45f176b80

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