Use of olive ( Olea europaea L .) leaves as beer ingredient, and their influence on beer chemical composition and antioxidant activity

2020 ◽  
Vol 85 (8) ◽  
pp. 2278-2285 ◽  
Author(s):  
Manfredi Guglielmotti ◽  
Paolo Passaghe ◽  
Stefano Buiatti
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Olea Europaea ◽  
Olea Europaea L ◽  
Olea Europaéa

scholarly journals In Vitro Anti-Epstein Barr Virus Activity of Olea europaea L. Leaf Extracts

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2445
Author(s):  
Ichrak Ben-Amor ◽  
Bochra Gargouri ◽  
Hamadi Attia ◽  
Khaoula Tlili ◽  
Imen Kallel ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Olea Europaea ◽  
Metal Ion ◽  
Radical Scavenging ◽  
Lytic Cycle ◽  
Antioxidant Power ◽  
Raji Cells ◽  
Olea Europaea L ◽  
Olea Europaéa

Olea europaea L. var. sativa (OESA) preparations are widely used in traditional medicine in the Mediterranean region to prevent and treat different diseases. In this research, olive extracts derived from the leaves of the OESA tree have been screened for antioxidant activity by two methods: the DPPH free radical scavenging assay (DPPH) and the Ferric reducing antioxidant power (FRAP) assay. The DPPH assay showed that OESA possesses a stronger antioxidant activity (84%) at 1 mg/mL while the FRAP method showed a strong metal ion chelating activity (90%) at 1 mg/mL. The low IC50 values, obtained by two different methods, implies that OESA has a noticeable effect on scavenging free radicals comparable to standards. During EBV infection, the free radicals increased triggering lipid oxidation. Therefore, the monitoring of the secondary lipid peroxidation products was done by measuring malonaldehyde (MDA) and conjugated dienes (DC). The simultaneous treatment of Raji cells with OESA and TPA, as an inductorof the lytic cycle, generated a significant decrease in MDA levels and DC (p < 0.05). Besides, Raji cells simultaneously exposed to TPA and OESA exhibited a percentage of EBV-positive fluorescence cells lower than TPA treated cells (**** p < 0.0001). This suggests that OESA treatment has a protective effect against EBV lytic cycle induction.

scholarly journals Investigation of phenolic compounds and antioxidant activity of leaves extracts from seventeen cultivars of Iranian olive (Olea europaea L.)

2018 ◽  
Vol 55 (11) ◽  
pp. 4600-4607 ◽  
Author(s):  
Saeed Ghasemi ◽  
Diba Eghbali Koohi ◽  
Mohammad Sadegh Bakhshi Emmamzadehhashemi ◽  
Shahriyar Shahbazi Khamas ◽  
Mohammad Moazen ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Olea Europaea ◽  
Olea Europaea L ◽  
Olea Europaéa

scholarly journals Chemical Composition and Water Permeability of Fruit and Leaf Cuticles of Olea europaea L.

2017 ◽  
Vol 65 (40) ◽  
pp. 8790-8797 ◽  
Author(s):  
Hua Huang ◽  
Markus Burghardt ◽  
Ann-Christin Schuster ◽  
Jana Leide ◽  
Isabel Lara ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Water Permeability ◽  
Olea Europaea ◽  
Olea Europaea L ◽  
Olea Europaéa

Antioxidant activity of phenolics extracted from Olea europaea L. leaves

2000 ◽  
Vol 68 (4) ◽  
pp. 457-462 ◽  
Author(s):  
O Benavente-Garcı́a ◽  
J Castillo ◽  
J Lorente ◽  
A Ortuño ◽  
J.A Del Rio
Keyword(s):  
Antioxidant Activity ◽  
Olea Europaea ◽  
Olea Europaea L ◽  
Olea Europaéa
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