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Nutritional characterization, ph and antioxidant activity of the pulp of 29 color-fleshed potatoes

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dc.contributor.authorOliveira, Izamara
dc.contributor.authorRodrigues, Christian Teixeira
dc.contributor.authorHeleno, Sandrina A.
dc.contributor.authorPetropoulos, Spyridon Α.
dc.contributor.authorAlexopoulos, Alexios
dc.contributor.authorCarocho, Márcio
dc.contributor.authorFerreira, Isabel C.F.R.
dc.contributor.authorBarros, Lillian
dc.date.accessioned2022-02-01T12:21:49Z
dc.date.available2022-02-01T12:21:49Z
dc.date.issued2021
dc.description.abstractPotatoes (Solanum tuberosum L.) is one of the most important food sources for humans due to their high production and nutritional quality, allowing various culinary uses, from domestic cooking to processing into chips and other ready-to-eat snacks. In this work, 29 color-fleshed varieties of potatoes were studied by analyzing their pH, nutritional profile (moisture, nutritional contents of fat, protein, carbohydrates and ash) and antioxidant activity through the thiobarbituric reactive acid substances (TBARS) assay. The samples were classified by a one-way analysis of variance using Tukey's test as post-hoc analysis for homoscedastic samples and Tamhane T2 for no homoscedastic ones, using a significance of 0.05 in both cases. According to the results obtained for nutritional values, protein showed statistically significant differences, with the Lilly Rose variety having the lowest content (1.173 g/100 g) and Highland Burgundy Red having the highest protein content (2.813 g/100 g). Considering crude fat, no significant differences were sought between the 29 varieties. The ash content showed significant differences among varieties, with Lilly Rose having the lowest content (0.509g /100 g) and Highland Burgundy Red having the highest content (1.9 g/100 g). For total carbohydrates few significant differences were detected, with variations being sought only for Blaue Ajanhuiri (13.835 g/100 g) and Highland Burgundy Red (23.302 g/100 g). Moisture was classified in three significantly different groups with Highland Burgundy Red showing the lowest moisture content at 71.86 g/100 g and Lilly Rose the highest, at 83.163 g/100 g. The pH analysis showed statistical variations among the varieties, with the Blaue Neuseeländer having the lowest pH value (pH=5.839) and the Blaue St. Galler the highest (pH=6.331). For the TBARS assay, only the five potatoes (pulp) with highest antioxidant activity were selected for analysis, and, apart from Schwarzer Teufel, the rest of the four potatoes cultivars showed no significant differences among each other. The antioxidant activity (EC50) of Schwarzer Teufel was 0.37 mg/mL Overall, the results showed a similarity in nutritional values among the tested potato varieties, indicating that beyond their interesting and appealing colors, they also possess valuable nutritional parameters with low variations among the varieties. Furthermore, the Schwarzer Teufel variety showed a very high antioxidant activity compared to the rest of the tested cultivars. Further studies are being performed to analyze the color of these potatoes, as well as bioactivities and chemical composition analyses of their pulp and skin.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES to CIMO (UIDB/00690/2020). L. Barros thanks the national funding by FCT through the institutional scientific employment program-contract for her contract, while M. Carocho and S. Heleno thank FCT through the individual scientific employment program-contracts (CEECIND/00831/2018 and CEECIND/03040/2017). I. Oliveira thanks FCT for her PhD grant (BD/06017/2020). To FEDER-Interreg España-Portugal programme for financial support through the project TRANSCoLAB 0612_TRANS_CO_LAB_2_P; to ERDF through the Regional Operational Program North 2020, within the scope of Project GreenHealth - Norte-01-0145-FEDER-000042.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationOliveira, Izamara de; Rodrigues, Christian; Heleno, Sandrina A.; Petropoulos, Spyridon Α.; Alexopoulos, Alexios; Carocho, Márcio; Ferreira, Isabel C.F.R.; Barros, Lillian (2021). Nutritional characterization, ph and antioxidant activity of the pulp of 29 color-fleshed potatoes. In 7th Portuguese Young Chemists Meeting. ISBN 978-989-8124-31-0pt_PT
dc.identifier.isbn978-989-8124-31-0
dc.identifier.urihttp://hdl.handle.net/10198/24986
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationBD/06017/2020pt_PT
dc.relationMountain Research Center
dc.relationCEECIND/01011/2018/CP1578/CT0002
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSolanum tuberosum L.pt_PT
dc.subjectPotatoespt_PT
dc.titleNutritional characterization, ph and antioxidant activity of the pulp of 29 color-fleshed potatoespt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberUIDB/00690/2020
oaire.awardNumberCEECIND/01011/2018/CP1578/CT0002
oaire.awardNumberCEECIND/03040/2017/CP1403/CT0001
oaire.awardTitleMountain Research Center
oaire.awardTitleCEECIND/01011/2018/CP1578/CT0002
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2018/CEECIND%2F01011%2F2018%2FCP1578%2FCT0002/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F03040%2F2017%2FCP1403%2FCT0001/PT
oaire.citation.conferencePlaceonline editionpt_PT
oaire.citation.title7th Portuguese Young Chemists Meetingpt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 2018
oaire.fundingStreamCEEC IND 2017
person.familyNameOliveira
person.familyNameHeleno
person.familyNameCarocho
person.familyNameFerreira
person.familyNameBarros
person.givenNameIzamara
person.givenNameSandrina A.
person.givenNameMárcio
person.givenNameIsabel C.F.R.
person.givenNameLillian
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person.identifier.orcid0000-0002-8978-4547
person.identifier.orcid0000-0003-4910-4882
person.identifier.orcid0000-0002-9050-5189
person.identifier.ridL-5951-2014
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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
rcaap.rightsopenAccesspt_PT
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