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Vertical farming of micro- and baby greens: Influence on organic acid, free sugar, betalain, and phenolic compound contents

2024Conference object Open access
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dc.contributor.authorPereira, Alexis
dc.contributor.authorDias, Maria Inês
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorPinela, José
dc.date.accessioned2024-12-10T16:52:53Z
dc.date.available2024-12-10T16:52:53Z
dc.date.issued2024
dc.description.abstractConsumers are increasingly cautious about their dietary choices, searching for fresh foods, such as vegetables, for their functional and potential health-promoting effects [1]. Microgreens are small tender vegetables harvested when the cotyledon leaves are formed alongside one set of true leaves, typically between 7 and 14 days. In contrast, baby greens are also small vegetables but are harvested when true leaves have formed, generally containing between two and eight true leaves, with a growing cycle of 20 to 40 days [2]. Swiss chard (Beta vulgaris var. cicla), a member of the Amaranthaceae family, is rich in phenolic compounds, betalains, chlorophylls, and carotenoids, making it a suitable candidate for microgreen production [3,4]. This study aimed to produce Swiss chard micro- and baby greens from white, yellow, pink, and orange varieties under soilless conditions and to characterize their profiles of phenolic compounds, betalains, free sugars, and organic acids. The microgreens were grown in a walk-in growth chamber equipped with LED lamps under controlled conditions and irrigated with a TriPart® Grow NPK 3-1-6 nutrient solution as necessary. Microgreens were produced in polystyrene trays filled with vermiculite, while baby greens were cultivated in individual phenolic foams. Microgreens and baby greens were harvested 14 and 34 days after sowing, respectively. A solid-liquid extraction using 80% ethanol was then performed to characterize the phytochemical composition of the plant material using different chromatographic techniques. Although the samples did not present free sugars, one organic acid (oxalic acid) was identified, with the orange and white microgreens exhibiting the highest and lowest concentrations, respectively. For baby greens, the yellow and orange varieties presented the highest and lowest concentrations, respectively. Seven phenolic compounds were identified in the microgreen and six in the baby greens. Among baby greens, only the white variety contained betalains (one betacyanin and three betaxanthins). The white microgreens presented seven betalains (two betacyanins and five betaxanthins), while only one betacyanin was identified in the orange, white, and pink microgreens. This study highlighted the potential of environmentally sustainable agriculture practices to produce Swiss chard microgreens and baby greens. Nevertheless, further studies on optimized production conditions and compound extraction techniques are required.pt_PT
dc.description.sponsorshipThe authors would like to thank the Foundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES (PIDDAC): CIMO UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); and SusTEC LA/P/0007/2020 (DOI: 10.54499/LA/ P/0007/2020). National funding by FCT, through the scientific employment programme with contract for M.I.D. (10.54499/CEECINST/00016/2018/CP1505/CT0004) and individual research grant (2023.00954.BD) for A.P.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPereira, Alexis; Dias, Maria Inês; Oliveira, Beatriz; Pinela, José (2024). Vertical farming of micro- and baby greens: Influence on organic acid, free sugar, betalain, and phenolic compound contents. In XXVIII Encontro Galego-Português de Química. Vigo. ISBN 978-84-09-66439-9pt_PT
dc.identifier.isbn978-84-09-66439-9
dc.identifier.urihttp://hdl.handle.net/10198/30704
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherColegio Oficial de Químicos de Galiciapt_PT
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationFortLight | Selenium and iodine biofortification of Swiss chard micro and baby greens: towards sustainable healthy foods
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectOrganic acidpt_PT
dc.subjectFree sugarpt_PT
dc.subjectResearch Subject Categories::TECHNOLOGY::Chemical engineering::Food technologypt_PT
dc.titleVertical farming of micro- and baby greens: Influence on organic acid, free sugar, betalain, and phenolic compound contentspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleFortLight | Selenium and iodine biofortification of Swiss chard micro and baby greens: towards sustainable healthy foods
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//2023.00954.BD/PT
oaire.citation.conferencePlaceVigopt_PT
oaire.citation.endPage260pt_PT
oaire.citation.startPage260pt_PT
oaire.citation.titleXXVIII Encontro Galego-Português de Químicapt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePereira
person.familyNameDias
person.familyNamePinela
person.givenNameAlexis
person.givenNameMaria Inês
person.givenNameJosé
person.identifier2472462
person.identifier.ciencia-idFB12-97E8-B051
person.identifier.ciencia-id2A13-4BE6-C7CF
person.identifier.ciencia-id771C-2B43-B108
person.identifier.orcid0000-0002-4740-6329
person.identifier.orcid0000-0001-8744-7814
person.identifier.orcid0000-0001-7523-1637
person.identifier.ridM-8242-2013
person.identifier.ridB-4466-2014
person.identifier.scopus-author-id58124934600
person.identifier.scopus-author-id54388787000
person.identifier.scopus-author-id54392272800
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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