| Publication Type |
Journal Article |
| Title |
Recovering value from organic waste materials: Supercritical fluid extraction of oil from industrial grape seeds |
| Authors |
José Coelho Rui M. Filipe M Paula Robalo Roumiana P. Stateva |
| Groups |
MET |
| Journal |
JOURNAL OF SUPERCRITICAL FLUIDS |
| Year |
2018 |
| Month |
November |
| Volume |
141 |
| Number |
0 |
| Pages |
68-77 |
| Abstract |
Supercritical extraction of oil from grape seed samples obtained from a Portuguese industry was carried out at temperatures from (313-333) K, pressures up to 40.0 MPa and different scCO(2) flow rates. The qualitative analysis of the crude oil was carried out by NMR. The fatty acids were analyzed by GC-Fid with reference to the parameters in Annex I to European Commission Regulation. The results show similar content of TAGs and DAGs both in the n-hexane and scCO(2) extraction methods, but the latter have higher PUPA and lower saturated fatty acids content. A dynamic model was used to simulate the extraction curves in gPROMS ModelBuilder. The grape seed oil was represented as either a one or a three component mixture of triacylglycerols, and the deviation between the experimental and calculated extraction yields was in the range (2-9) \% for the first, and (4-11) \% for the second case. |
| DOI |
http://dx.doi.org/10.1016/j.supflu.2017.12.008 |
| ISBN |
|
| Publisher |
|
| Book Title |
|
| ISSN |
0896-8446 |
| EISSN |
1872-8162 |
| Conference Name |
|
| Bibtex ID |
ISI:000451654200009 |
| Observations |
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