Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying

Detalhes bibliográficos
Autor(a) principal: Candéa, Tatiana Vidal
Data de Publicação: 2013
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/10412
Resumo: Dissertation presented to Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa for obtaining the master degree in Membrane Engineering
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spelling Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray dryingLinseed oilPremix membrane emulsificationDirect membrane emulsificationFood emulsionsBioactive lipidsDissertation presented to Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa for obtaining the master degree in Membrane EngineeringFood emulsions play an important role in product development and formulation, as well as to encapsulation of food additives. Conventional methods for emulsion production may present some drawbacks, such as the use of high shear stress, high energy demanding and polydisperse droplet size distribution. In this sense, membrane emulsification emerges as an alternative method to overcome all this issues and to produce fine and stable emulsions. Linseed oil has been widely studied in the last years, due to its nutritional composition, being the richest ω-3 vegetable source and for that reason it was used as the raw material for emulsion production. Premix and direct (cross flow) membrane emulsification were carried out using three different membrane materials: polissulphone, cellulose ester and α-alumina membrane. For premix membrane emulsification (PME) the variables transmembrane pressure, membrane material, surfactant type and membrane mean pore size were evaluated. The membrane mean pore size was the crucial factor to achieve emulsions by PME, once it was not possible to achieve stable emulsion with mean pore sizes lower than 0.8 μm. For direct membrane emulsification, transmembrane pressure, surfactant concentration and cross flow velocity were evaluated by means of a experimental design. The evaluated responses were stability, droplet size and distribution and dispersed phase flux. For all the variables studied, only dispersed phase flux showed to have significant influence of pressure. Comparing both methods of membrane emulsification, premix showed to be more suitable in terms of emulsion production throughput and droplet size correlation with membrane pore size, however, in terms of stability, direct membrane emulsification showed much better results. Encapsulation of linseed oil by spray drying was promoted using the optimum point of the performed experimental design and the droplets size distribution has considerably changed with the addition of the wall material to the emulsion.The EM3E Master is an Education Programme supported by the European Commission, the European Membrane Society (EMS), the European Membrane House (EMH), and a large international network of industrial companies, research centres and universitiesFaculdade de Ciências e TecnologiaCabral, LourdesTonon, RenataCoelhoso, IsabelCrespo, JoãoRUNCandéa, Tatiana Vidal2013-09-20T11:17:54Z20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/10412enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-10T15:29:38ZPortal AgregadorONG
dc.title.none.fl_str_mv Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
title Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
spellingShingle Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
Candéa, Tatiana Vidal
Linseed oil
Premix membrane emulsification
Direct membrane emulsification
Food emulsions
Bioactive lipids
title_short Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
title_full Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
title_fullStr Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
title_full_unstemmed Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
title_sort Study of membrane emulsification process as a pre-step for the microencapsulation of lipid compounds by spray drying
author Candéa, Tatiana Vidal
author_facet Candéa, Tatiana Vidal
author_role author
dc.contributor.none.fl_str_mv Cabral, Lourdes
Tonon, Renata
Coelhoso, Isabel
Crespo, João
RUN
dc.contributor.author.fl_str_mv Candéa, Tatiana Vidal
dc.subject.por.fl_str_mv Linseed oil
Premix membrane emulsification
Direct membrane emulsification
Food emulsions
Bioactive lipids
topic Linseed oil
Premix membrane emulsification
Direct membrane emulsification
Food emulsions
Bioactive lipids
description Dissertation presented to Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa for obtaining the master degree in Membrane Engineering
publishDate 2013
dc.date.none.fl_str_mv 2013-09-20T11:17:54Z
2013
2013-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/10412
url http://hdl.handle.net/10362/10412
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1777302897331011584

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