A B S T R A C T
The effect of methyl jasmonate postharvest application on the antioxidant and antiinflammatory
activity of strawberry fruits was evaluated. Results showed that the methyl
jasmonate treated strawberry extract had higher antioxidant activity and suppresses the
nitrite production in LPS-stimulated RAW 264.7 murine macrophages. The HPLC profiles
of both treated and untreated strawberry extracts were compared. To evaluate which compounds
are responsible of these higher activities it was also investigated the antioxidant
and anti-inflammatory capacities of the hexane, chloroform, EtOAc, and n-butanol fractions
obtained from the methyl jasmonate treated strawberry. The EtOAc and n-butanol
fractions exhibited the most potent antioxidant activity compared to the hexane and chloroform
fractions. In addition the n-butanol fraction was able to decrease nitrite production.
The EtOAc and n-butanol fractions were analyzed by LC–MS. These results showed that
methyl jasmonate promotes antioxidant and anti-inflammatory capacity of strawberry
fruits by the stimulation of phenolic compounds and anthocyanins production.