Monitoring the Bioactive Compounds Status in Olea europaea According to Collecting Period and Drying Conditions
Metadata
Show full item recordAuthor
Taamalli, Amani; Lozano Sánchez, Jesús; Jebabli, Haifa; Trabelsi, Najla; Abaza, Leila; Segura Carretero, Antonio; Cho, Jae Youl; Arráez Román, DavidEditorial
MDPI
Materia
Olea europaea Supercritical fluid extraction Triterpenoids Olive leaves
Date
2019-03-12Referencia bibliográfica
Taamalli, A., Lozano Sánchez, J., Jebabli, H., Trabelsi, N., Abaza, L., Segura Carretero, A., ... & Arráez Román, D. (2019). Monitoring the Bioactive Compounds Status in Olea europaea According to Collecting Period and Drying Conditions. Energies, 12(5), 947.
Sponsorship
This work was supported by the Tunisian Ministry of Higher Education under the Tunisian-Korean project “Development of Anti-arthritic remedy with Olive by-products”.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 ºC, whereas triterpenoids
showed the highest content in fresh leaves collected in August.