Publication
Compositional and Bioactive Differentiation of Opuntia spp. Fruit Varieties by PCA and LDA
| datacite.subject.fos | Ciências Agrárias::Outras Ciências Agrárias | |
| datacite.subject.sdg | 02:Erradicar a Fome | |
| datacite.subject.sdg | 03:Saúde de Qualidade | |
| datacite.subject.sdg | 12:Produção e Consumo Sustentáveis | |
| dc.contributor.author | Espírito Santo, Liliana | |
| dc.contributor.author | Pereira, Cláudia S.G.P. | |
| dc.contributor.author | Costa, Anabela S.G. | |
| dc.contributor.author | Almeida, Agostinho | |
| dc.contributor.author | Barreira, João C.M. | |
| dc.contributor.author | Oliveira, Beatriz | |
| dc.contributor.author | Vinha, Ana F. | |
| dc.date.accessioned | 2025-11-07T15:11:17Z | |
| dc.date.available | 2025-11-07T15:11:17Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | The nutritional, mineral, and bioactive profiles of four Opuntia fruit varieties-Opuntia robusta red variety (OR-RV) and three Opuntia ficus-indica varieties (red, yellow, and green: OFI-RV, OFI-YV, and OFI-GV, respectively)-were characterized to assess their compositional diversity and potential discriminant markers. Standard analytical procedures were applied to determine proximate composition, individual sugars, fibre content, mineral concentration, and bioactive compounds, followed by antioxidant activity assays. Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA) were used to explore multivariate patterns and identify variables with the greatest discriminatory power. Results revealed significant inter-varietal differences across all measured parameters (p < 0.05). OR-RV displayed the highest non-fibre carbohydrate, protein, copper, and ascorbic acid contents, as well as superior antioxidant activity. OFI-GV stood out for its high soluble and insoluble fibre, magnesium, and strontium levels, while OFI-YV was characterized by elevated sodium and calcium, and OFI-RV by increased protein and glucose contents. LDA identified ascorbic acid, protein, and five mineral elements (Sr, Zn, Cu, Mn, B) as key discriminant variables, achieving 100% classification accuracy. These findings highlight compositional diversity among Opuntia varieties and support their differentiated use in food and health applications. | eng |
| dc.description.sponsorship | This work received financial support from the PT national funds (FCT/MECI, Fundação para a Ciência e Tecnologia and Ministério da Educação, Ciência e Inovação) through the project UID/50006 -Laboratório Associado para a Química Verde - Tecnologias e Processos Limpos. L.E.S. is grateful to LAQV-Tecnologias e Processos Limpos-UIDB/50006/2020 for her grant (REQUIMTE 2023-49); C.S.G.P.P. thanks FCT for her PhD grant (2021.09490.BD); J.C.M.B. acknowledges Fundação para a Ciência e a Tecnologia (FCT) for his contract (CEECIND/04479/2017). | |
| dc.identifier.citation | Espírito Santo, Liliana; Pereira, Cláudia S.G.P.; Costa, Anabela S.G.; Almeida, Agostinho; Barreira, João C.M.; Oliveira, Beatriz; Vinha, Ana F.; (2025). Compositional and Bioactive Differentiation of Opuntia spp. Fruit Varieties by PCA and LDA. Foods. ISSN 2304-8158. 14:18, p. 1-14 | |
| dc.identifier.doi | 10.3390/foods14183170 | |
| dc.identifier.issn | 2304-8158 | |
| dc.identifier.uri | http://hdl.handle.net/10198/34998 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | MDPI | |
| dc.relation | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| dc.relation.ispartof | Foods | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | |
| dc.subject | Opuntia spp. | |
| dc.subject | Nutritional composition | |
| dc.subject | Mineral profile | |
| dc.subject | Bioactive compounds | |
| dc.subject | Antioxidant activity | |
| dc.subject | Principal component analysis | |
| dc.subject | Linear discriminant analysis | |
| dc.title | Compositional and Bioactive Differentiation of Opuntia spp. Fruit Varieties by PCA and LDA | eng |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F50006%2F2013/PT | |
| oaire.citation.endPage | 14 | |
| oaire.citation.issue | 18 | |
| oaire.citation.startPage | 1 | |
| oaire.citation.title | Foods | |
| oaire.citation.volume | 14 | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| person.familyName | Barreira | |
| person.givenName | João C.M. | |
| person.identifier.orcid | 0000-0003-1233-0990 | |
| person.identifier.rid | D-8269-2013 | |
| person.identifier.scopus-author-id | 54895546900 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
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| relation.isAuthorOfPublication.latestForDiscovery | 4629b12c-39b0-4da8-8b8d-6efba5cf2d81 | |
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