Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom
With the aim to investigate the influence of post-harvest olive fruit storage temperatures on virgin olive oil production parameters, composition and quality, Istarska bjelica (IB) and Rosinjola (RO) fruits were stored for seven days at room temperature (RT), +4 °C and −20 °C prior to oil production...
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2020-10-01
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doaj-372510f7dff5467c97a685c69743fa342020-11-25T02:41:58ZengMDPI AGFoods2304-81582020-10-0191445144510.3390/foods9101445Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted TherefromKarolina Brkić Bubola0Marina Lukić1Anja Novoselić2Marin Krapac3Igor Lukić4Institute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, CroatiaInstitute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, CroatiaInstitute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, CroatiaInstitute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, CroatiaInstitute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, CroatiaWith the aim to investigate the influence of post-harvest olive fruit storage temperatures on virgin olive oil production parameters, composition and quality, Istarska bjelica (IB) and Rosinjola (RO) fruits were stored for seven days at room temperature (RT), +4 °C and −20 °C prior to oil production. Lower temperatures delayed post-harvest maturation of IB fruits. Theoretical oil content did not change depending on the storage temperature, while the highest oil yield and extractability index were obtained after storage at RT. Chlorophylls decreased in IB-RT and in IB-20. A decrease in the sensory quality of oils was detected after fruit storage at RT and −20 °C, while the refrigeration temperature of +4 °C preserved it. Regarding the content of fatty acid ethyl esters, an increase was observed in IB-RT oils. Storage at RT increased the content of waxes, while the lower temperatures partially suppressed this phenomenon. In oils of both cultivars, storage at +4 °C preserved the concentration of most phenolic compounds at a level more similar to that of the fresh oil when compared to the other two treatments. In the production conditions, when prolonged fruit storage is necessary, refrigeration seems to be the most suitable option.https://www.mdpi.com/2304-8158/9/10/1445olive fruitsstorage temperaturevirgin olive oilFAEEwaxesphenolic compounds |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Karolina Brkić Bubola Marina Lukić Anja Novoselić Marin Krapac Igor Lukić |
spellingShingle |
Karolina Brkić Bubola Marina Lukić Anja Novoselić Marin Krapac Igor Lukić Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom Foods olive fruits storage temperature virgin olive oil FAEE waxes phenolic compounds |
author_facet |
Karolina Brkić Bubola Marina Lukić Anja Novoselić Marin Krapac Igor Lukić |
author_sort |
Karolina Brkić Bubola |
title |
Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom |
title_short |
Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom |
title_full |
Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom |
title_fullStr |
Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom |
title_full_unstemmed |
Olive Fruit Refrigeration during Prolonged Storage Preserves the Quality of Virgin Olive Oil Extracted Therefrom |
title_sort |
olive fruit refrigeration during prolonged storage preserves the quality of virgin olive oil extracted therefrom |
publisher |
MDPI AG |
series |
Foods |
issn |
2304-8158 |
publishDate |
2020-10-01 |
description |
With the aim to investigate the influence of post-harvest olive fruit storage temperatures on virgin olive oil production parameters, composition and quality, Istarska bjelica (IB) and Rosinjola (RO) fruits were stored for seven days at room temperature (RT), +4 °C and −20 °C prior to oil production. Lower temperatures delayed post-harvest maturation of IB fruits. Theoretical oil content did not change depending on the storage temperature, while the highest oil yield and extractability index were obtained after storage at RT. Chlorophylls decreased in IB-RT and in IB-20. A decrease in the sensory quality of oils was detected after fruit storage at RT and −20 °C, while the refrigeration temperature of +4 °C preserved it. Regarding the content of fatty acid ethyl esters, an increase was observed in IB-RT oils. Storage at RT increased the content of waxes, while the lower temperatures partially suppressed this phenomenon. In oils of both cultivars, storage at +4 °C preserved the concentration of most phenolic compounds at a level more similar to that of the fresh oil when compared to the other two treatments. In the production conditions, when prolonged fruit storage is necessary, refrigeration seems to be the most suitable option. |
topic |
olive fruits storage temperature virgin olive oil FAEE waxes phenolic compounds |
url |
https://www.mdpi.com/2304-8158/9/10/1445 |
work_keys_str_mv |
AT karolinabrkicbubola olivefruitrefrigerationduringprolongedstoragepreservesthequalityofvirginoliveoilextractedtherefrom AT marinalukic olivefruitrefrigerationduringprolongedstoragepreservesthequalityofvirginoliveoilextractedtherefrom AT anjanovoselic olivefruitrefrigerationduringprolongedstoragepreservesthequalityofvirginoliveoilextractedtherefrom AT marinkrapac olivefruitrefrigerationduringprolongedstoragepreservesthequalityofvirginoliveoilextractedtherefrom AT igorlukic olivefruitrefrigerationduringprolongedstoragepreservesthequalityofvirginoliveoilextractedtherefrom |
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