Research Article

Simultaneous Determination of Gallic Acid, Ellagic Acid, and Eugenol in Syzygium aromaticum and Verification of Chemical Antagonistic Effect by the Combination with Curcuma aromatica Using Regression Analysis

Table 4

Repeatability and stability of three reference compounds in Syzygium aromaticum extract ( ).

CompoundRepeatability (RSD, %) Stability (RSD, %)

Gallic acid 0.73 0.70
Ellagic acid0.38 2.24
Eugenol0.66 0.49