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Natural food preservatives: application of rosemary, basil, and sage in yogurts as a viable alternative to artificial ones, using sustainable, low cost and efficient process

2021Conference object Open access
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dc.contributor.authorUeda, Jonata Massao
dc.contributor.authorPedrosa, Mariana C.
dc.contributor.authorFernandes, Filipa Alexandra
dc.contributor.authorCalhelha, Ricardo C.
dc.contributor.authorMelgar Castañeda, Bruno
dc.contributor.authorRodrigues, Paula
dc.contributor.authorDias, Maria Inês
dc.contributor.authorPinela, José
dc.contributor.authorIvanov, Marija
dc.contributor.authorSoković, Marina
dc.contributor.authorIneu, Rafael P.
dc.contributor.authorCarocho, Márcio
dc.contributor.authorFerreira, Isabel C.F.R.
dc.contributor.authorHeleno, Sandrina A.
dc.contributor.authorBarros, Lillian
dc.date.accessioned2022-01-21T15:25:50Z
dc.date.available2022-01-21T15:25:50Z
dc.date.issued2021
dc.description.abstractFoods are susceptible to various forms of degradation, either by oxygen present in the atmosphere, microbiological factors, enzymatic degradation and others, being essential to study new ways of preserving food. Due to the need of creating “stock” and preserve food in the pre-industrial era, consumers were essentially concerned on obtaining food as quickly as possible, opting for “industrialized” food. Nowadays, the demand for non-processed foods or with a minimum of artificial additives is increasing due to an increased awareness of consumers towards healthier diets, studies related to health risks and public opinions generated in the media [1,2]. Plants are known to be rich sources of bioactive compounds, since these are considered a defense mechanism against external agents such as microorganisms, oxidizing agents and ultraviolet radiation, and for these reasons their extracts are investigated as promising sources of natural additives for the food industry [3]. Thus, the main objective of this work was the exploitation of rosemary (Rosmarinus officinalis L.), basil (Ocimum basilicum L.) and sage (Salvia officinalis L.) as sources of preservative molecules, for incorporation in yogurts. This included: i) the optimization of the extraction of bioactive molecules through ultrasound assisted extraction (UAE), a sustainable and lowcost extraction technology, using green solvents (water and ethanol); ii) chemical characterization of the extracts obtained by HPLC-DAD-ESI/MS techniques; iii) evaluation of the bioactivities of the extracts (antioxidant, antimicrobial and cytotoxic activities); iv) incorporation of the most promising extracts into the yogurts, and v) the evaluation of the stability of the ingredients over the shelf-life through physical parameters (texture, color and pH); microbiological analysis [4]; nutritional value [5] and monitoring the molecules with preservative capacity. All the formulations were compared with control samples (without additives and with potassium sorbate, a common artificial additive used in yogurts). According to the obtained results, for the extraction optimization, it was found that the percentage of solvent is the most relevant factor for obtaining an extract rich in rosmarinic acid, followed by the extraction time and ultrasonic power. For the antioxidant and antimicrobial activity, rosemary extract showed the best result, followed by sage and basil. Moreover, none of the three plant extracts showed hepatotoxicity, at the maximum concentration tested. Finally, the plant extracts did not show changes in the physico-chemical and nutritional characteristics of the yogurts and the incorporation of the preservative extracts did not affect the normal lactic bacteria growth, which are fundamental for the yogurt manufacturing process. Moreover, the extracts were obtained through sustainable, green and low-cost process, providing the industry with safer and economically viable alternatives.pt_PT
dc.description.sponsorshipThe authors thank FCT, Portugal for financial support through national funds FCT/MCTES to the CIMO (UIDB/00690/2020) and to Filipa A. Fernandes PhD grant (SFRH/BD/145467/2019). L. Barros, M.I. Dias and R.C. Calhelha also thank the national funding by FCT – Foundation for Science and Technology, P.I., through the institutional scientific employment program-contract for their contracts, and M. Carocho (CEECIND/00831/2018), J. Pinela (CEECIND/01011/2018) and S. A. Heleno (CEECIND/03040/2017) to the national funding by FCT – Foundation for Science and Technology, P.I., through the individual scientific employment program-contracts. ERDF, through the Incentive System to Research and Technological development, within the Portugal2020 Competitiveness and Internationalization Operational Program for the financial support to BIOMA(POCI_01_0247_FEDER_046112); 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.citationUeda, Jonata M.; Pedrosa, Mariana C.; Fernandes, Filipa Alexandra; Calhelha, Ricardo C.; Melgar, Bruno; Rodrigues, Paula; Dias, Maria Inês; Pinela, José; Ivanov, Marija; Soković, Marina; Ineu, Rafael P.; Carocho, Márcio; Ferreira, Isabel C.F.R.; Heleno, Sandrina A.; Barros, Lillian (2021). Natural food preservatives: application of rosemary, basil, and sage in yogurts as a viable alternative to artificial ones, using sustainable, low cost and efficient process. 1st Natural products application: health, cosmetic and food: book of abstracts. Bragança: Instituto Politécnico. ISBN 978-972-745-286-6pt_PT
dc.identifier.isbn978-972-745-286-6
dc.identifier.urihttp://hdl.handle.net/10198/24843
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInstituto Politécnico de Bragançapt_PT
dc.relationCEECIND/01011/2018pt_PT
dc.relationMountain Research Center
dc.relationDevelopment of nutraceuticals and functional foods with natural preservative and bioactive ingredients
dc.relationNorte-01-0145-FEDER-000042pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectNatural food preservativespt_PT
dc.titleNatural food preservatives: application of rosemary, basil, and sage in yogurts as a viable alternative to artificial ones, using sustainable, low cost and efficient processpt_PT
dc.typeconference object
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oaire.awardTitleMountain Research Center
oaire.awardTitleDevelopment of nutraceuticals and functional foods with natural preservative and bioactive ingredients
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F145467%2F2019/PT
oaire.citation.conferencePlaceBragançapt_PT
oaire.citation.endPage49pt_PT
oaire.citation.startPage49pt_PT
oaire.citation.title1st Natural products application: Health, Cosmetic and Foodpt_PT
oaire.fundingStream6817 - DCRRNI ID
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person.givenNameRicardo C.
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person.givenNameMaria Inês
person.givenNameJosé
person.givenNameMárcio
person.givenNameIsabel C.F.R.
person.givenNameSandrina A.
person.givenNameLillian
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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
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