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 1

Linear regression, correlation coefficients (𝑟²), LOD, and LOQ for the reference compounds (𝑛=3).

Compound	Linear equation	Correlation coefficient	Linear range (𝜇g/mL)	LOD^a (𝜇g/mL)	LOQ^b (𝜇g/mL)
Gallic acid	𝑦=32700.38𝑥−18582.04	0.9998	0.78–100	0.05	0.16
Ellagic acid	𝑦=88471.48𝑥−48062.58	0.9998	0.78–100	0.01	0.03
Eugenol	𝑦=10497.31𝑥−8692.62	0.9996	1.56–200	0.11	0.36

aLimit of detection, ^blimit of quantification.