Figure 3 from: Proskurina K, Yevtifieieva O, Mala O, Mashtaler V (2021) Development of the method for standardization of the medicinal plant raw material of Cichorium intybus L. herb by the total amount of hydroxycinnamic acid derivatives. Pharmacia 68(1): 167-173. https://doi.org/10.3897/pharmacia.68.e49273

Figure 3 Absorbance values of chlorogenic acid as a function of the solution concentrations. The data correlation was calculated by a linear fit