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Microencapsulation of phenolic extracts in calcium alginate beads for nutraceutical applications

2015Conference object Open access
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dc.contributor.authorDias, Maria Inês
dc.contributor.authorBarros, Lillian
dc.contributor.authorSantos-Buelga, Celestino
dc.contributor.authorFerreira, Isabel C.F.R.
dc.contributor.authorBarreiro, M.F.
dc.date.accessioned2015-10-29T12:23:13Z
dc.date.available2015-10-29T12:23:13Z
dc.date.issued2015
dc.description.abstractBioactive ingredients are generally prone to degradation, both during storage and food processing, as many of them are physically, chemically and/or enzymatically instable leading to their degradation or transformation with the consequent loss of bioactivity. To overcome these limitations microencapsulation emerges as a reliable response to protect and stabilize bioactives (or extracts containing them), also offering the possibility of a controlled or targeted delivery [1]. The encapsulation materials, productive process, microcapsule’s morphology and ultimate application conditions are the most important factors to be taken into account when des igning a novel microencapsulated product, together with stability and functional properties issues. Moreover, to obtain a successful product, the achievement of high encapsulation yields, process and release profile reproducibility and overcome microcapsule’s aggregation, should be guaranteed. For food applications the used materials must be considered “generally recognized as safe” (GRAS ) and be, preferably, biodegradable. Both EU through the EFSA and the US through FDA have many strict rules about material usage for food applications. In this context, the most commonly used materials are natural or natural-derived polymers. Among them, carbohydrate polymers (e.g. starch and cellulose and their derivatives), plant exudates and extracts (e.g. gum, galactomannans, pectins and soybean polysaccharides), marine extracts (e.g. carrageenan and alginate), microbial and animal derived polysaccharides (e.g. xanthan, gellan, dextran and chitosan) and proteins were tested for these purposes. In what concerns microencapsulation processes, a set of techniques are available (e.g., coacervation, extrusion, emulsion based process, liposomes etc.). Nevertheless, spray -based processes are the most commonly used by academia and industry. They present the advantages of being flexible and economically competitive, allowing a continuous production [2]. In this work the use of microencapsulation to protect natural extracts will be demonstrated with a case study comprising the development of a nutraceutical formulation based on gelatine incorporating alginate microspheres enriched with bioactive phenolic extracts obtained from wild Fragaria vesca L.pt_PT
dc.identifier.citationDias, Maria Inês; Barros, Lillian; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.; Barreiro, M. Filomena (2015). Microencapsulation of phenolic extracts in calcium alginate beads for nutraceutical applications. In 6th Workshop on Green Chemistry and Nanotechnologies in Polymer Chemistry. Bragança. ISBN 978-972-745-188-3pt_PT
dc.identifier.doi978-972-745-188-3
dc.identifier.urihttp://hdl.handle.net/10198/12223
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationIMPROVING SECONDARY METABOLITES PRODUCTION THROUGH IN VITRO CULTURE TECHNIQUE: CHEMICAL AND GENETIC CHARACTERIZATION OF EDIBLE PLANTS, BIOACTIVE PROPERTIES AND MICROENCAPSULATION OF PHENOLIC FRACTIONS
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleMicroencapsulation of phenolic extracts in calcium alginate beads for nutraceutical applicationspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleIMPROVING SECONDARY METABOLITES PRODUCTION THROUGH IN VITRO CULTURE TECHNIQUE: CHEMICAL AND GENETIC CHARACTERIZATION OF EDIBLE PLANTS, BIOACTIVE PROPERTIES AND MICROENCAPSULATION OF PHENOLIC FRACTIONS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FAGR%2FUI0690%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEQU%2F50020%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F84485%2F2012/PT
oaire.citation.title6th Workshop on Green Chemistry and Nanotechnologies in Polymer Chemistrypt_PT
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameDias
person.familyNameBarros
person.familyNameFerreira
person.familyNameBarreiro
person.givenNameMaria Inês
person.givenNameLillian
person.givenNameIsabel C.F.R.
person.givenNameFilomena
person.identifier469085
person.identifier144781
person.identifier.ciencia-id2A13-4BE6-C7CF
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id9418-CF95-9919
person.identifier.ciencia-id3418-47D5-5746
person.identifier.orcid0000-0001-8744-7814
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0003-4910-4882
person.identifier.orcid0000-0002-6844-333X
person.identifier.ridM-8242-2013
person.identifier.ridJ-3600-2013
person.identifier.ridE-8500-2013
person.identifier.ridL-9802-2014
person.identifier.scopus-author-id54388787000
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id36868826600
person.identifier.scopus-author-id57188719717
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
rcaap.typeconferenceObjectpt_PT
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