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Evaluation of the phenolic profile and bioactive potential of portuguese and Algerian pumpkin by-products

2023Conference object Open access
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dc.contributor.authorLeichtweis, Maria Gabriela
dc.contributor.authorMolina, Adriana K.
dc.contributor.authorPires, Tânia C.S.P.
dc.contributor.authorDias, Maria Inês
dc.contributor.authorCalhelha, Ricardo C.
dc.contributor.authorBachari, Khaldoun
dc.contributor.authorZiani, Borhane E.C.
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorPereira, Carla
dc.contributor.authorBarros, Lillian
dc.date.accessioned2024-11-18T10:21:53Z
dc.date.available2024-11-18T10:21:53Z
dc.date.issued2023
dc.description.abstractPumpkin, a globally appreciated fruit, possesses a balanced nutritional profile and valuable biological and pharmacological properties. However, currently, the industrial processing of this fruit still focuses on the pulp, while large volumes of by-products are wasted. Considering the potential content of high value-added compounds in this fruit parts, like seeds and peel [1], the present study proposed the seeds, peel, and fibrous strands from three different genotypes that are economically significant in Portugal and Algeria to produce bioactive extracts. In order to support their usage as preservatives, their phenolic content and bioactivity were assessed. The hydroethanolic extracts (80:20 ethanol/water) were obtained by maceration, and their phenolic profile was analyzed by HPLC-DAD-ESI/MS, with a tentative identification followed by quantification. Also, the antioxidant properties were assessed through two cell based assays (OxHLIA and TBARS) and the antimicrobial capacity was tested against eight bacterial and two fungal strains. In terms of phenolic profile, eight compounds were found, six of which belonging to the flavonoid family. The Portuguese ‘Common Pumpkin’ peel showed the most diversified profile and also the highest concentration of total phenolic compounds (9.4 ± 0.3 mg/g), with considerable concentrations of (-)-epicatechin (4.58 ±0.08 mg/g). Despite the different phenolic composition, all samples presented relevant bioactive properties. Regarding the antioxidant capacity, the seeds of ‘Butternut Squash’ from both countries stood out, while the fibrous strands of Portuguese ‘Butternut Squash’ and the seeds of Algerian ‘Gold Nugget Pumpkin’ revealed the strongest antimicrobial activity. In addition, the potential safety of the extracts was verified, where none of the samples showed toxicity against a primary culture of non-tumor porcine liver cells (PLP2) up to 400 g/mL. The identification of bioactive compounds in pumpkin byproducts highlights their significant potential as a source of bio-based preservatives, which can promote consumers’ health and contribute to a circular economy.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Technology, P.I., (FCT, Portugal) through national funds FCT/MCTES to CIMO (UIDB/00690/2020 and UIDP/00690/2020), SusTEC (LA/P/0007/2021) and UIDB/50006/2020; national funding by FCT, P.I., through the institutional scientific employment program-contract for M.I.D., R.C., C.P. and L.B. contracts and M.G. and A.K.M. PhD grants (2020.06706.BD and 2020.06231.BD, respectively). To FCT, P.I., within the scope of the Project PRIMA Section 2—Multi-topic 2019: PulpIng (PRIMA/0007/2019).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLeichtweis, Maria Gabriela; Molina, Adriana K.; Pires, Tânia C.S.P.; Dias, Maria Inês; Calhelha, Ricardo C.; Bachari, Khaldoun; Ziani, Borhane E.C.; Oliveira, Beatriz; Pereira, Carla; Barros, Lillian (2023). Evaluation of the phenolic profile and bioactive potential of portuguese and Algerian pumpkin by-products. In 8th Portuguese Young Chemists Meeting (8PYCheM). Vila Realpt_PT
dc.identifier.urihttp://hdl.handle.net/10198/30619
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherUniversidade de Trás-os-Montes e Alto Douropt_PT
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationAllPumpkin – Development of a high-quality pumpkin pulp enriched and preserved by added-value molecules from pumpkin by-products, an integrative and sustainable strategy.
dc.relationPulpIng - Development of a Pumpkin Pulp Formulation using a Sustainable Integrated Strategy
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPumpkinpt_PT
dc.subjectResearch Subject Categories::TECHNOLOGY::Chemical engineering::Food technologypt_PT
dc.titleEvaluation of the phenolic profile and bioactive potential of portuguese and Algerian pumpkin by-productspt_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.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleAllPumpkin – Development of a high-quality pumpkin pulp enriched and preserved by added-value molecules from pumpkin by-products, an integrative and sustainable strategy.
oaire.awardTitlePulpIng - Development of a Pumpkin Pulp Formulation using a Sustainable Integrated Strategy
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
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/2020.06706.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/2020.06231.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PRIMA%2F0007%2F2019/PT
oaire.citation.conferencePlaceVila Realpt_PT
oaire.citation.endPage61pt_PT
oaire.citation.startPage61pt_PT
oaire.citation.title8th Portuguese Young Chemists Meeting (8PYCheM)pt_PT
oaire.fundingStream6817 - DCRRNI ID
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person.familyNameLeichtweis
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person.givenNameMaria Gabriela
person.givenNameAdriana K.
person.givenNameTânia C.S.P.
person.givenNameMaria Inês
person.givenNameRicardo C.
person.givenNameCarla
person.givenNameLillian
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.typeconferenceObjectpt_PT
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