Publicação
Predicting the shelf-life of extra virgin olive oil during storage at 22 and 50ºC, using a kinetic modelling approach
| Resumo: | Olive oil (OO) is a high-value food due to its appreciated sensory attributes and health benefits. The shelf life (SL) of an OO is a key parameter, being influenced by the olive cultivar, agro-climatic, extraction and storage conditions. So, kinetic models were developed for 3 physicochemical quality parameters (peroxide value and the extinction coefficients at 232 and 268 nm), to estimate the SL, based on a Time to Reach the legal Upper Limit (TRUL) approach. For that, a ripe EVOO, stored in amber glass bottles, in the dark and during 5 weeks, at 22 and 50ºC, was used. Zero-, first-, and second-order kinetic models were evaluated, and the best correlations were achieved for the zero-order model. Based on this model, the SL of the stored EVOOs were predicted to be 47-210 days and 35-80 days at 22 and 50ºC, respectively. As expected, the SL decreased for the higher storage temperature, being the lowest values predicted for K232 and K268, data, for 22 and 50ºC, respectively. |
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| Autores principais: | Ferreiro, Nuno Manuel |
| Outros Autores: | Pereira, José Alberto; Peres, António M.; Rodrigues, Nuno |
| Assunto: | Extra virgin olive oil |
| Ano: | 2023 |
| País: | Portugal |
| Tipo de documento: | documento de conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| Resumo: | Olive oil (OO) is a high-value food due to its appreciated sensory attributes and health benefits. The shelf life (SL) of an OO is a key parameter, being influenced by the olive cultivar, agro-climatic, extraction and storage conditions. So, kinetic models were developed for 3 physicochemical quality parameters (peroxide value and the extinction coefficients at 232 and 268 nm), to estimate the SL, based on a Time to Reach the legal Upper Limit (TRUL) approach. For that, a ripe EVOO, stored in amber glass bottles, in the dark and during 5 weeks, at 22 and 50ºC, was used. Zero-, first-, and second-order kinetic models were evaluated, and the best correlations were achieved for the zero-order model. Based on this model, the SL of the stored EVOOs were predicted to be 47-210 days and 35-80 days at 22 and 50ºC, respectively. As expected, the SL decreased for the higher storage temperature, being the lowest values predicted for K232 and K268, data, for 22 and 50ºC, respectively. |
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