Repository logo
 
Publication

Microwave hydrodiffusion and gravity: an emergent technology for green extraction of non-volatile compounds

2015Conference object Open access
Simple item page
dc.contributor.authorPassos, Cláudia P.
dc.contributor.authorCalvão, João
dc.contributor.authorFerreira, Sónia
dc.contributor.authorJorge, Ricardo
dc.contributor.authorFernandes, Pedro A.R.
dc.contributor.authorMartins, Vitor Manuel Ramalheira
dc.contributor.authorCoelho, Elisabete
dc.contributor.authorWessel, Dulcineia F.
dc.contributor.authorCardoso, Susana M.
dc.contributor.authorNunes, Cláudia
dc.contributor.authorCoimbra, Manuel A.
dc.date.accessioned2018-03-28T09:56:42Z
dc.date.available2018-03-28T09:56:42Z
dc.date.issued2015
dc.description.abstractMicrowave technologies are more and more present in food applications due to their performance in shortening the time of treatments such as drying, pasteurization, defrosting, or postharvesting. While solvent-free microwave extraction has been extensively used as a green procedure for essential oil and volatile compounds from aromatic herbs [1], its applications have been extended to enhance extraction of phytocompounds simultaneously with drying. In this work, microwave hydrodiffusion and gravity was performed in a laboratory microwave oven (NEOS-GR, Milestone, Italy), in order to evaluate its efficiency in the extraction of nonvolatile compounds such as: free sugars, f1bers, colour, and phenolic compounds. Five different matrices were tested: broccoli by-products (90% moisture), apple pomace (80% moisture), spent coffee grounds (65% moisture), Pterospartum tridentatum inflorescences, and brown algae, the latter two in dried state. The flow behaviour was very dependent on matrix (Figure 1): for broccoli, the time to obtain 50 ml aliquots increased along time while for apple pomace it was always the same after the initial and final heating periods, and for the spent coffee grounds it was always decreasing. Good recoveries were observed when using high water content matrices, such as apple pomace and broccoli. However, when using hydrated matrices, such as brown algae and Pterospartum tridentatum inflorescences, it was observed that the amount of material extracted is very low. In the case of spent coffee qrounds (a material where water is added to the ground coffee when preparing espresso coffee), the initial low recoveries can be overcome by the eo-addition of ethanol, allowing to obtain fractions rich in phenolic compounds, as well as brown compounds (with antioxidant activity) and caffeine. NEOS-GR, using microwave hydrodiffusion and gravity is a green extraction technology obtain hydrophilic compounds from wet matrices using its own water, allowing the extraction of valuable non-volatile compounds.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPassos, Claúdia P.; Calvão, João; Ferreira, Sónia; Jorge, Ricardo; Fernandes, Pedro A.R.; Martins, Vitor Manuel Ramalheira; Coelho, Elisabete; Wessel, Dulcinéia F.; Cardoso, Susana M.; Nunes, Claúdia; Coimbra, Manuel António (2015). Microwave hydrodiffusion and gravity: an emergent technology for green extraction of non-volatile compounds. In MicroBioTec 2015 - Congress of microbiology and biotechnology. Évorapt_PT
dc.identifier.isbn978-989-99475-2-8
dc.identifier.urihttp://hdl.handle.net/10198/16611
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherLaboratório Hérculespt_PT
dc.relationIsolation, derivatisation, and characterization of polysaccharides with immunomodulatory potential for valorisation of broccoli by-products
dc.relationValuation of Apple and Pear Pomaces: a Still Non-Explored Source of Bioactive Compounds
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicrowave hydrodiffusionpt_PT
dc.subjectGreen extractionpt_PT
dc.subjectNon-volatile compoundspt_PT
dc.titleMicrowave hydrodiffusion and gravity: an emergent technology for green extraction of non-volatile compoundspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleIsolation, derivatisation, and characterization of polysaccharides with immunomodulatory potential for valorisation of broccoli by-products
oaire.awardTitleValuation of Apple and Pear Pomaces: a Still Non-Explored Source of Bioactive Compounds
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F65718%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F103003%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_CENTRO/SFRH%2FBD%2F107731%2F2015/PT
oaire.citation.conferencePlaceÉvora, Portugalpt_PT
oaire.citation.endPage113pt_PT
oaire.citation.startPage113pt_PT
oaire.citation.titleMicroBioTec 2015- Congress of microbiology and biotechnologypt_PT
oaire.fundingStreamSFRH
oaire.fundingStreamPOR_CENTRO
person.familyNameMartins
person.givenNameVitor Manuel Ramalheira
person.identifier.ciencia-id7C1B-3C44-BDC5
person.identifier.orcid0000-0003-4144-898X
person.identifier.scopus-author-id57191364121
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
relation.isAuthorOfPublicationba9148ec-024a-478f-8498-fb3b59950cc7
relation.isAuthorOfPublication.latestForDiscoveryba9148ec-024a-478f-8498-fb3b59950cc7
relation.isProjectOfPublication624b0749-efe1-4b90-898a-4d6647ab31f3
relation.isProjectOfPublication9f745d4a-5e5f-48f7-9849-acb238dc9f7e
relation.isProjectOfPublication70261b65-437b-414b-ad98-6f8587be526f
relation.isProjectOfPublication.latestForDiscovery9f745d4a-5e5f-48f7-9849-acb238dc9f7e

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
MicroBioTec_2015_Abstract.pdf
Size:
649.94 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIMO - Resumos em Proceedings Não Indexados à WoS/Scopus