Research Article

Analytical Method for the Validation of Three Polyphenols as a Marker Compound for the Standardization of Solidago virgaurea subsp. gigantea Extracts and Antiadipogenesis of Harvesting Time and Location

Table 2

Precision (intraday and interday) and accuracy of protocatechuic acid, chlorogenic acid, and kaempferol-3-O-rutinoside detection.

Analyte compoundsAnalyte
concentration
(μg/ml)
Intraday ()Interday ()
Calculated concentration
(mean ± SD, μg/ml)
RSD (%)Accuracy (%)Calculated
concentration
(mean ± SD, μg/ml)
RSD (%)Accuracy (%)

Protocatechuic acid (PC)18.920.0799.480.2399.46
23.771.3398.190.2199.46
62.570.1297.380.1297.50

Chlorogenic acid (CA)253.070.58101.40.01100.79
300.570.53100.460.1299.92
680.570.24102.930.10102.65

Kaempferol-3-O-rutinoside (K-O-R)24.450.5799.810.2599.93
58.450.32104.260.34103.14
100.950.24103.330.70104.49