Monitoring the Bioactive Compounds Status in Olea europaea According to Collecting Period and Drying Conditions

Amani Taamalli, Jesus Lozano Sánchez, Haifa Jebabli, Najla Trabelsi, Leila Abaza, Antonio Segura Carretero, Jae Youl Cho and David Arráez Román
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Amani Taamalli: Laboratoire de Biotechnologie de l’Olivier, Centre de Biotechnologie de Borj-Cedria, B/P 901 Hammam-Lif 2050, Tunisia
Jesus Lozano Sánchez: Department of Food Science and Nutrition, University of Granada, Campus Universitario s/n, 18071 Granada, Spain
Haifa Jebabli: Laboratoire de Biotechnologie de l’Olivier, Centre de Biotechnologie de Borj-Cedria, B/P 901 Hammam-Lif 2050, Tunisia
Najla Trabelsi: Laboratoire de Biotechnologie de l’Olivier, Centre de Biotechnologie de Borj-Cedria, B/P 901 Hammam-Lif 2050, Tunisia
Leila Abaza: Laboratoire de Biotechnologie de l’Olivier, Centre de Biotechnologie de Borj-Cedria, B/P 901 Hammam-Lif 2050, Tunisia
Antonio Segura Carretero: Center of Research and Development of Functional Food, Health Science Technological Park, Avda. del Conocimiento s/n, 18100 Granada, Spain
Jae Youl Cho: Department of Integrative Biotechnology, Sungkyunkwan University, 2066 Seobu-ro, Suwon 16419, Korea
David Arráez Román: Center of Research and Development of Functional Food, Health Science Technological Park, Avda. del Conocimiento s/n, 18100 Granada, Spain

Energies, 2019, vol. 12, issue 5, 1-19

Abstract: Polyphenols and triterpenoids in olive have relevant importance both in the physiology of the plant and the nutritional and biological value of its products. Olive leaf extracts are of special interest for their numerous health-promoting properties. The present research is investigating the occurrence of phytochemicals in supercritical fluid extracts from leaves with regard to collection time and drying temperature. The phytochemical profiles of the olive leaf extracts were determined by reversed-phase high-performance liquid chromatography (HPLC) coupled to electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) detection. The main extracted phytochemicals were phenols and terpenoids. A significant variation in the amounts of the different components was observed as a function of the different drying temperature and collecting time ( p < 0.05). Among samples, the maximal contents of polyphenols and secoiridoid derivatives were found in the extracts from olive leaves collected in November and dried at 120 °C, whereas triterpenoids showed the highest content in fresh leaves collected in August.

Keywords: Olea europaea; supercritical fluid extraction; triterpenoids; polyphenols; olive leaves (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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