Academic Journal
Profile of enzyme in drupe of oueslati's cv. olives during ripening phases: A support method implementation in the production of extra virgin olive oil
| العنوان: | Profile of enzyme in drupe of oueslati's cv. olives during ripening phases: A support method implementation in the production of extra virgin olive oil |
|---|---|
| المؤلفون: | Hachicha Hbaieb R., Kotti F., Paduano A., Crupi P., Clodoveo M. L., Sacchi R., Gargouri M. |
| المساهمون: | Hachicha Hbaieb, R., Kotti, F., Paduano, A., Crupi, P., Clodoveo, M. L., Sacchi, R., Gargouri, M. |
| سنة النشر: | 2022 |
| المجموعة: | Università degli Studi di Bari Aldo Moro: CINECA IRIS |
| مصطلحات موضوعية: | olive endogenous enzyme, Oueslati olive, phenolic compound, ripening, virgin olive oil |
| الوصف: | Quality of virgin olive oil (VOO) depends on phenolic molecules content, which depends on the biochemical characteristics of olive fruits, namely endogenous enzymes. In order to ascertain the influence of olive fruit ripening degree on the phenol content, enzyme activities in olive fruits, and the quality of the corresponding oils were studied during Oueslati olive ripening. In fact, three enzymes were studied: peroxidase (POX) in olive seeds, polyphenoloxidase (PPO), and β-glucosidase (β-GL) in olive fruits mesocarp. Each enzyme showed specific trend: POX activity increased gradually until reaching a maximum (17.061 ± 0.101 U g−1 FW) at ripening index (RI) 3.6 and then decreased slowly at advanced ripening stage. However, the maximum of PPO activity (240.421 ± 0.949 U g−1 FW) was observed earlier at RI of 0.7. Concerning β-glucosidase activity, its maximal was 60.857 ± 1.105 U g−1 FW at RI 2.8, then, it decreased sharply to reach 17.096 ± 0.865 U g−1 FW at RI 3.9. A significant increase of total phenol content as well as the antioxidant activity were observed during Oueslati olive ripening. Moreover, phenolic profile indicated that appropriate harvesting date of Oueslati olives coincided with RI 3.9 given that highest content of most important individuals phenolic compounds responsible for the main VOO biological properties achieved on this date. Furthermore, phenols amount of Oueslati VOO was principally due to PPO enzyme activity as the increase in total phenols coincides with the decrease in PPO activity. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000771887800001; volume:99; issue:6; firstpage:457; lastpage:468; numberofpages:12; journal:JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY; https://hdl.handle.net/11586/434300 |
| DOI: | 10.1002/aocs.12584 |
| الاتاحة: | https://hdl.handle.net/11586/434300 https://doi.org/10.1002/aocs.12584 https://aocs.onlinelibrary.wiley.com/doi/10.1002/aocs.12584 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.DF37848A |
| قاعدة البيانات: | BASE |
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