Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/104472
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.creator | A. Catarina Guedes | |
dc.creator | Maria S. Gião | |
dc.creator | Ana A. Matias | |
dc.creator | Ana V. M. Nunes | |
dc.creator | Manuela E. Pintado | |
dc.creator | Catarina M. M. Duarte | |
dc.creator | F. Xavier Malcata | |
dc.date.accessioned | 2022-09-15T00:38:30Z | - |
dc.date.available | 2022-09-15T00:38:30Z | - |
dc.date.issued | 2013 | |
dc.identifier.issn | 0260-8774 | |
dc.identifier.other | sigarra:68870 | |
dc.identifier.uri | https://hdl.handle.net/10216/104472 | - |
dc.description.abstract | Faster and more selective extraction methods are urger to recover food-grade pigments and antioxidants from microalgae-which do not resort to food-incompatible and environment-unfriendly solvents. Hence, this study ascertained the influence of pressure, temperature, CO2 flow rate and a polar co-solvent upon the yields of carotenoids and chlorophylls in supercritical fluid extraction of Scenedesmus obliquus biomass. The highest carotenoid yield was attained at 250 bar and 60°C. The yields of chlorophylls, when using plain CO2, increased slightly with pressure, but decreased with temperature and CO2 flow rate; the highest yield of chlorophyll a was at 4.3gCO2min-1, whereas ethanol as co-solvent increased all yields except that of chlorophyll c. The highest ratio of total carotenoids to chlorophyll a was reached at 250 bar and 60°C. A remarkable selectivity was observed under these operating conditions, which may enable easy separation and purification of the aforementioned pigments. | |
dc.language.iso | eng | |
dc.rights | restrictedAccess | |
dc.subject | Ciências da engenharia e tecnologias | |
dc.subject | Engineering and technology | |
dc.title | Supercritical fluid extraction of carotenoids and chlorophylls a, b and c, from a wild strain of Scenedesmus obliquus for use in food processing | |
dc.type | Artigo em Revista Científica Internacional | |
dc.contributor.uporto | Faculdade de Engenharia | |
dc.identifier.doi | 10.1016/j.jfoodeng.2012.12.015 | |
dc.identifier.authenticus | P-005-1CM | |
dc.subject.fos | Ciências da engenharia e tecnologias | |
dc.subject.fos | Engineering and technology | |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
68870.pdf Restricted Access | Artigo original publicado | 548.53 kB | Adobe PDF | Request a copy from the Author(s) |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.