Publication
Spray-drying of Dunaliella salina to produce a β -carotene rich powder
| dc.contributor.author | Leach, G. | |
| dc.contributor.author | Oliveira, G. | |
| dc.contributor.author | Morais, R. | |
| dc.date.accessioned | 2011-10-11T11:33:38Z | |
| dc.date.available | 2011-10-11T11:33:38Z | |
| dc.date.issued | 1998 | |
| dc.description.abstract | Powders of Dunaliella salina biomass were obtained by spray drying a cell concentrate under different drying regimes. A three-factor, two-level experimental design was employed to investigate the influence of inlet temperature, outlet temperature and feed solids on b-carotene recovery. The effect of microencapsulation in a polymer matrix of maltodextrin and gum arabic was also studied. All powders were stored under specific conditions to assess the stability of the native b-carotene. There was a trend indicating that lower outlet temperature yielded higher carotenoid recoveries, b-carotene recovery varying between 57% and 91%. Microencapsulated biomass yielded 100% recoveries. All non-microencapsulated powders were unstable in terms of b-carotene content in the presence of natural light and oxygen showing 90% degradation over a 7-day period. The incorporation of a microencapsulating agent had a significant increase in the storage stability. Results indicated a first-order degradation of the b-carotene in microencapsulated powders with kinetic constants of 0.06 day-1 and 0.10 day-1. HPLC analysis showed no effect of drying processes on isomer composition (9-cis-b-carotene and all-trans-b-carotene ratio). This behaviour was also observed during storage of the microencapsulated powders. | por |
| dc.identifier.citation | LEACH, G.; OLIVEIRA, G.; MORAIS, R. - Spray-drying of Dunaliella salina to produce a β -carotene rich powder - Journal of Industrial Microbiology & Biotechnology . ISSN 1367-5435. Vol. 20 (1998), p. 82–85 | por |
| dc.identifier.uri | http://hdl.handle.net/10400.14/5949 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Springer | por |
| dc.relation | Microencapsulation | por |
| dc.relation.publisherversion | The original publication is available at: http://www.springerlink.com/content/7u78ekk34vml5pcc/ | por |
| dc.subject | Dunaliella salina | por |
| dc.subject | Microalgae | por |
| dc.subject | B-carotene | por |
| dc.subject | Spray-drying | por |
| dc.subject | Cis/trans isomers | por |
| dc.title | Spray-drying of Dunaliella salina to produce a β -carotene rich powder | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Morais | |
| person.givenName | Rui M. S. C. | |
| person.identifier | 143926 | |
| person.identifier.ciencia-id | 541B-04AE-0686 | |
| person.identifier.orcid | 0000-0001-5138-6941 | |
| person.identifier.rid | M-5065-2013 | |
| person.identifier.scopus-author-id | 7005146997 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | fa2b729c-8159-4a98-9bfe-0fa1e98aa9fb | |
| relation.isAuthorOfPublication.latestForDiscovery | fa2b729c-8159-4a98-9bfe-0fa1e98aa9fb |
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