Erratum to: Phytochemical analysis and antioxidant properties of mixtures containing Platycodonis Radix, Codonopsidis Radix, Paeoniae Radix, and Lonicerae Flos

초록

Add the following to the original. p. 166 Sample preparation and steam treatment Two sample types, one subjected to steam treatment (Platycodonis Radix and Codonopsidis Radix) and the other without steam treatment (Paeoniae Radix and Lonicerae Flos), were prepared by Korea Best One Co., Republic of Korea (Fig. 1). The steamed Platycodonis Radix (SPR), steamed Codonopsidis Radix (SCR), non-steamed Paeoniae Radix (NPR), and non-steamed Lonicerae Flos (NLF) were ground and extracted with water using a reflux system. The first extraction was performed with water at 15 times the weight of the raw materials (100oC, 8 h). After filtering and vacuum concentrating the first extract, water at 10 times the weight of the initially extracted raw materials was added for the second extraction (100oC, 8 h). After filtering and concentrating the second extract, the final Brix degree was approximately 40. Four mixtures were prepared according to the ratios of the raw materials used for extraction: mixtures of SPR, SCR, and NPR (at ratios of 1:1:1 and 2:2:1) and mixtures of SPR, SCR, and NLF (at ratios of 1:1:1 and 2:2:1) were provided by Korea Best One Co., Republic of Korea. The extracts were dissolved in 80% MeOH (50 mg/mL) and filtered through a syringe filter (PVDF, 0.22 μm). Stock solutions of the standards were prepared by dissolution in 80% MeOH. Working solutions were prepared by diluting the stock solution to the desired concentrations for the standard calibration curves. The condition of steam treatment of SPR and SCR is shown at Table 1. © The Korean Society for Applied Biological Chemistry 2024.