Publication
Production of a carotenoid-rich product by alginate entrapment and fluid-bed drying of Dunaliella salina
| dc.contributor.author | Leach, Gareth | |
| dc.contributor.author | Oliveira, Gisela | |
| dc.contributor.author | Morais, Rui | |
| dc.date.accessioned | 2011-10-21T12:15:29Z | |
| dc.date.available | 2011-10-21T12:15:29Z | |
| dc.date.issued | 1998 | |
| dc.description.abstract | A new carotenoid-rich product was formed by entrapment of Dunaliella salina in calcium alginate beads of di†erent alginate concentrations, followed by drying in a Ñuid-bed dryer. The drying process yielded b-carotene recoveries of between 79 and 89% and produced a change in the 9-cis/all-trans ratio of b-carotene isomers. The carotenoid stability of the product was dependant on both the storage conditions and alginate content (range 3É3È7É3 g litre~1) of the beads. In the presence of light and oxygen total carotenoid degraded following a Ðrst order kinetic model with degradation constants between 0É016 and 0É039 days~1, with the lowest degradation occurring with the lowest alginate concentration. Product stored in the dark and Ñushed with nitrogen produced Ðrst-order degradation constants of 0É012 and 0É020 days~1 for the two higher alginate concentrations ; that with the lowest alginate content showed no noticeable degradation after 58 days storage. During storage, the 9-cis isomer was signiÐcantly more unstable showing a relative loss under all conditions, degrading almost completely when stored in the presence of light and oxygen and reaching an equilibrium ratio with the all-trans isomer when stored in the dark and Ñushed with nitrogen. | por |
| dc.identifier.citation | LEACH, Gareth; OLIVEIRA, Gisela; MORAIS, Rui - Production of a carotenoid-rich product by alginate entrapment and fluid-bed drying of Dunaliella salina. Journal of the Science of Food and Agriculture. ISSN 0022-5142. Vol. 76 (1998), p. 298-302 | por |
| dc.identifier.uri | http://hdl.handle.net/10400.14/6657 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Wiley | por |
| dc.relation.publisherversion | The definitive version is available at www3.interscience.wiley.com | por |
| dc.subject | Alginate | por |
| dc.subject | β-carotene | por |
| dc.subject | Cell entrapment | por |
| dc.subject | Cis/trans-isomers | por |
| dc.subject | Dunaliella salina | por |
| dc.subject | Fluid-bed drying | por |
| dc.subject | Microalgae | por |
| dc.title | Production of a carotenoid-rich product by alginate entrapment and fluid-bed drying of Dunaliella salina | 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 |
Files
Original bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- Production of a carotenoid Rich product by alginate entrapment and fluid bed drying of dunaliella salina.pdf
- Size:
- 207.52 KB
- Format:
- Adobe Portable Document Format
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 3.44 KB
- Format:
- Item-specific license agreed upon to submission
- Description: