Effect of the Treatment of the Olive Tree ( Olea europaea L.) on the Phenolic Content and Antioxidant Properties in Olive Fruits

Abstract

See, stats, and : https :/ / www . researchgate. net / publication / 322555036 Effect (Olea europaea .) on Antioxidant . . . Article DOI : 10.12691/jfnr-6-1-8 CITATIONS 0 4 , including : Some : Fruit Olive Maria - Jimenez Universidad 68 SEE All - Jimenez. The . Abstract We here investigate the effects of the application of methyl jasmonate to olive trees on antioxidant composition of olive fruits . Two cultivars (ie , Arbequina and Picual) were evaluated in our study . As a result , the total phenol content increased significantly with the treatment in Arbequina (from 155 . 89 to 434 . 22 mg gallic acid kg - 1) whereas decreases were observed in Picual (from 338 . 27 to 127 . 71 mg gallic acid kg - 1) . Similarly , decreases in phenolic acid content were measured in Arbequina whilst no effect was observed in Picual olives . However , the contents of oleuropein and hydroxytyrosol did not increase with the pre - harvest methyl jasmonate for both Arbequina and Picual . Also for both cultivars the treatment of the olive trees increased the free radical scavenging activity of the olive fruits (IC 50 from 514 . 36 to 1125 . 46 µg / mL in Arbequina and from 611 . 98 to 114 . 55 µg / mL in Picual) . The results here found are deeply discussed .