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Study of antioxidant activity in extracts from fresh and dried halophyte plants

2021Journal article Open access
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dc.contributor.authorBarroca, M. J.
dc.contributor.authorMansinhos, I. F. P.
dc.contributor.authorGuiné, Raquel P. F.
dc.contributor.authorSilva, A. M.
dc.date.accessioned2021-11-11T08:30:21Z
dc.date.available2021-11-11T08:30:21Z
dc.date.issued2021
dc.description.abstractSalicornia macrostachya Moric. and Sarcocornia perennis subsp. alpini belong to the same family and share morphological and organoleptic characteristics. The visually appealing in terms of freshness, color and particular taste, nutritional values and health benefits are recognized by their consumers as attributes that warrant their gourmet status. The objective of this work was to study the effect of incubation time on antioxidant capacity of these plants. Moreover, the work investigates the antioxidant activity of the extracts of the two halophyte plants and evaluates the effect of air drying the plants at 40 ºC and the procedure of concentration the extracts before evaluating the antioxidant activity, measured with DPPH method. The two halophyte plants, Salicornia macrostachya Moric. and Sarcocornia perennis subsp. alpini were collected from Portuguese salt pans, in the central region of Portugal, and the aerial parts were used as raw material. The drying of plants was performed in a pilot tray drier at 40 ºC and air velocity of 1.5 m/s, for approximately 3 days. The DPPH free radical scavenging of the methanolic extracts was analysed in extracts obtained from fresh and dried plants. The determination of the antioxidant activity was made with the DPPH radical. The results showed that, in summary, and regarding the DPPH assay, the incubation time of 15 minutes is enough to measure the DPPH scavenging activity in halophyte extracts. Furthermore, the convective air-drying process at 40 ºC showed to be an appropriate process to increase the shelf life of the halophyte plants and the antioxidant capacoty of the halophyte plants, as a response to the stress provoked by the heat and humidity drying conditions. The plant extracts showed significant antioxidant potential, with high radical scavenging activity. The extracts prepared from Salicornia macrostachya and Sarcocornia perennis had, respectively, values of IC50 equal to 1.09 and 1.42 mg/mL. However, the antioxidant activity of extracts obtained from dried plants increased much more since the IC50 decreased to around 0.6 mg/mL, regardless of the halophyte plant. Both halophytes plant are a valuable source of natural antioxidants and nutrients for use in food. Besides, their crude extracts may represent a valuable source for developing novel food products (antioxidant-enriched foods) that satisfy the desires of consumers in terms of health benefits and sensorial acceptance.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarroca MJ, Mansinhos IFP, Guiné RPF, Silva AM. (2021) Study of antioxidant activity in extracts from fresh and dried halophyte plants. Journal of Hygienic Engineering and Design, 36, 143-149.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/6886
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectSalicorniapt_PT
dc.subjectSarcocorniapt_PT
dc.subjectExtractionpt_PT
dc.subjectDryingpt_PT
dc.subjectAntioxidant activitypt_PT
dc.subjectConcentrationpt_PT
dc.titleStudy of antioxidant activity in extracts from fresh and dried halophyte plantspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage149pt_PT
oaire.citation.startPage143pt_PT
oaire.citation.titleJournal of Hygienic Engineering and Designpt_PT
oaire.citation.volume36pt_PT
person.familyNamede Pinho Ferreira Guiné
person.givenNameRaquel
person.identifierhttps://scholar.google.pt/citations?user=abFDovIAAAAJ&hl=pt-PT
person.identifier.ciencia-id8B13-5492-0F23
person.identifier.orcid0000-0003-0595-6805
person.identifier.scopus-author-id6603138390
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication59580952-77cc-4e4e-ae90-527a8b994f9f
relation.isAuthorOfPublication.latestForDiscovery59580952-77cc-4e4e-ae90-527a8b994f9f

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