Background: In the present work we determined phenolic and flavonoids content of
Eriobotrya japonica
leaves extracts
and fractions and their antioxidant and anti-inflammatory properties.
Objectives: To evaluate the inhibition of inflammatory PLA2 and antioxidant effects of extracts and fractions from
Eriobotrya
japonica leaves
Methods: Antioxidant activity was evaluated with DPPH radical scavenging assay and anti-inflammatory effect of fractions
was measured by their inhibition potency on the human pro-inflammatory phospholipase A2 (group IIA).
Results: The EtOH/EtOAc 2:1 extract exhibited a potent inhibition of the hG-IIA with an IC50 values of 8 μg/ml. It also
shows an antioxidant activity measured on DPPH with an IC50 of 42 μg/ml. Fractionation shows that CH2Cl2/MeOH 0:1
fraction was the rich one on flavonoids compounds (4.3 mg/g dry weight) and demonstrates a high antioxidant activity with
an IC50 of 12 μg/ml. The anti-inflammatory evaluation demonstrates that the same fraction was the best one to inhibit the
pro-inflammatory phospholipase A2 group IIA with an IC50 of 4 μg/ml.
Conclusion: Study conducted on
Eriobotrya japonica shows that CH2Cl2/MeOH 0:1 fraction inhibits efficiently the hGIIA
phospholipase.which is considered as pro-inflammatory enzyme.
