Simultaneous Determination of Salicylic Acid, Jasmonic Acid, Methyl Salicylate, and Methyl Jasmonate from Ulmus pumila Leaves by GC-MS

Table 1

Effect of extract solvent on extraction efficiency (yield %).

Compound	MeOH/H2O			EtOH/H2O			MeOH/H2O (80 : 20) + ethyl acetate	MeOH/H2O (80 : 20) + n-hexane
	90 : 10	80 : 20	70 : 30	90 : 10	80 : 20	70 : 30
Salicylic acid	69.5	84.4	75.4	58.3	83.5	72.6	80.4	68.5
Jasmonic acid	67.8	88.5	72.6	56.6	79.8	82.4	85.3	70.8
Methyl salicylate	79.9	99.8	83.6	82.5	95.6	90.5	94.6	85.6
Methyl jasmonate	84.5	94.5	85.6	93.4	99.7	93.5	95.3	83.5