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From famine wild plants in mountain regions of Northeastern Portugal to gourmet foods in contemporary diets: a nutritional based revalorization study

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dc.contributor.authorPinela, José
dc.contributor.authorRoriz, Custódio Lobo
dc.contributor.authorPereira, Carla
dc.contributor.authorFernandes, Ângela
dc.contributor.authorBarros, Lillian
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorCarvalho, Ana Maria
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2018-02-07T10:12:58Z
dc.date.available2018-02-07T10:12:58Z
dc.date.issued2017
dc.description.abstractWild plants have received high importance at different locations and times of the human history given their ability to provide nutrients and protection in scarcity periods. In the Northeastern region of Portugal, a mountainous land with vast biodiversity and cultural heritage, a large number of edible wild plants have become underutilized over time. This abandonment was mainly due to altered lifestyles of modern society and massive utilization of a restrict number of crops. However, some wild species are now emerging in gardens and kitchens around Europe and increasingly found in farmers' markets, gourmet food shops and restaurants. Following this trend, this study aimed to characterize five species traditionally consumed as vegetable (Montia fontana L., Nasturtium officinale R. Br. and Rumex induratus Boiss. & Reut.) or as condiment (Pterospartum tridentatum (L.) Willk and Thymus pulegioides L.) in terms of nutrients and bioactive compounds. Wild specimens of the selected plants were gathered in the Northeast region of Portugal and analyzed for their nutritional value following standard procedures; free sugars, fatty acids, tocopherols and ascorbic acid were analyzed by chromatographic techniques; and total phenolics and flavonoids were quantified by colorimetric assays. All plants revealed low protein contents. The highest levels of carbohydrates and free sugars were found in the flowering parts of the two species used as condiments. Fructose and glucose predominated in all plants except in T. pulegioides in which sucrose prevailed. These low-fat foods revealed healthy fatty acids profiles mainly composed by α-linolenic acid, a precursor of long-chain n-3 polyunsaturated fatty acids. M. fontana and R. induratus were sources of ascorbic acid; a 100-g portion of R. induratus contain more than 50% of the recommended dietary allowances (RDA) for adults. R. induratus, T. pulegioides and P. tridentatum presented the high α-tocopherol content, whose 100-g portions contribute in more than 30% of the RDA. Regarding bioactive non-nutrients, while P. tridentatum was found particularly rich in total phenolics, T. pulegioides showed the highest total flavonoid content. This extensive work demonstrates that the selected famine foods have a healthy fatty acids composition, vitamins and bioactive compounds, and can be considered as interesting contemporary foods.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPinela, José; Roriz, Custódio Lobo; Pereira, Carla; Fernandes, Ângela; Barros, Lillian; Oliveira, M.B.P.P.; Carvalho, Ana Maria; Ferreira, Isabel C.F.R. (2017). From famine wild plants in mountain regions of Northeastern Portugal to gourmet foods in contemporary diets: a nutritional based revalorization study. In Living in a global world: ethnobotany, local knowledge and sustainability. 58th Annual Meeting of the Society for Economic Botany. Book of Abstracts. Bragança: Instituto Politécnico. ISBN 978-972-745-224-8pt_PT
dc.identifier.isbn978-972-745-224-8
dc.identifier.urihttp://hdl.handle.net/10198/15603
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInstituto Politécnico de Bragançapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectWild food plantspt_PT
dc.subjectValorizationpt_PT
dc.subjectNutricional valuept_PT
dc.subjectNortheast of Portugalpt_PT
dc.titleFrom famine wild plants in mountain regions of Northeastern Portugal to gourmet foods in contemporary diets: a nutritional based revalorization studypt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceBragança, Portugalpt_PT
oaire.citation.title58th Annual Meeting of the Society for Economic Botanypt_PT
person.familyNamePinela
person.familyNameRoriz
person.familyNamePereira
person.familyNameFernandes
person.familyNameBarros
person.familyNameCarvalho
person.familyNameFerreira
person.givenNameJosé
person.givenNameCustódio Lobo
person.givenNameCarla
person.givenNameÂngela
person.givenNameLillian
person.givenNameAna Maria
person.givenNameIsabel C.F.R.
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person.identifier.orcid0000-0001-7523-1637
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person.identifier.orcid0000-0003-4910-4882
person.identifier.ridB-4466-2014
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rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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