Accuracy as recovery
Accuracy was investigated by analyzing three concentrations of standard drug solution previously analyzed using the standard addition technique. The recovery studies were carried out to check the sensitivity of the method to estimate eupalitin 3-O- β-D-galactopyranoside. The standard addition technique was carried out by adding 50, 100 and 150% of the bioactive compound’s concentration in the sample extracts. The % average recoveries of the concentrations were found to be 99.8% for eupalitin 3-O- β-D-galactopyranoside indicative of high accuracy. The value of % average recovery is displayed in Table 3. The mean % recovery values, close to 100%, and their low % RSD values indicated a high accuracy of the analytical method.