Publicação
Colour changes in thermally processed cupuaçu (Theobroma grandiflorum) puree: critical times and kinetics modelling
| dc.contributor.author | Silva, Filipa M. | |
| dc.contributor.author | Silva, Cristina L. M. | |
| dc.date.accessioned | 2011-10-20T17:41:53Z | |
| dc.date.available | 2011-10-20T17:41:53Z | |
| dc.date.issued | 1999 | |
| dc.description.abstract | Colour changes in thermally treated cupuaçu (Theobroma grandiflorum) fruit puree were modelled mathematically. Isothermal experiments in the temperature range of 80–115 °C were performed and colour was measured by a tristimulus colorimeter. At each temperature total colour difference (TCD*) increased and normalized L* decreased with processing time, both following a power law model. The power of the model was temperature-dependent and described by the Arrhenius law. To estimate the model constants, a one-step non-linear regression was performed on all data. Activation energies of 31 and 36 kJ/mol were determined for TCD* and normalized L*, respectively. These results should prove useful in the design of pasteurization processes which minimize colour changes in cupuaçu puree | por |
| dc.identifier.citation | SILVA, Filipa M. ; SILVA, Cristina L. M. Silva - Colour changes in thermally processed cupuaçu (Theobroma grandiflorum) puree: critical times and kinetics modelling. International Journal of Food Science & Technology. ISSN 1365-2621. Vol. 34, n.º 1 (1999), p. 87–94 | por |
| dc.identifier.doi | 10.1046/j.1365-2621.1999.00246.x | |
| dc.identifier.uri | http://hdl.handle.net/10400.14/6553 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Wiley Blackwell | por |
| dc.subject | Cupuaçu | por |
| dc.subject | Kinetics | por |
| dc.subject | Pasteurization | por |
| dc.subject | Total colour difference | por |
| dc.subject | Tristimulus colorimeter | por |
| dc.title | Colour changes in thermally processed cupuaçu (Theobroma grandiflorum) puree: critical times and kinetics modelling | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Silva | |
| person.givenName | Cristina | |
| person.identifier | 1473674 | |
| person.identifier.ciencia-id | 6611-634A-132C | |
| person.identifier.orcid | 0000-0002-0495-3955 | |
| person.identifier.rid | A-3568-2013 | |
| person.identifier.scopus-author-id | 7201387397 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | 4e2903de-0679-4cb1-981e-10de14c0c995 | |
| relation.isAuthorOfPublication.latestForDiscovery | 4e2903de-0679-4cb1-981e-10de14c0c995 |