The kinetic and thermodynamic studies of solid-liquid extraction of apigenin-glycosides from parsley (Petroselinum crispum)

In this study, the effect of various parameters such as solvent concentration (50 and 80%), extraction temperature (30, 40, and 50 degrees C), and solvent/solid ratio (1:20, 1:25, and 1:30 g ml(-1)) on the extraction yield of apigenin-glycosides from parsley were investigated. The high-performance liquid chromatography analysis of parsley extracts confirms the presence of two apigenin-glycosides: apiin and malonyl-apiin. The kinetics of extraction was described using non-stationary diffusion model and Ponomarev's model. Models have a good fit to the experimental data (root mean square: RMS 0.82). The effects of the process factors on the kinetic model parameters, equilibrium constant and Gibbs free energy change were assessed using the full factorial test plan 2(3).

Automated summary

The study investigated the effects of various parameters on the extraction yield of apigenin-glycosides from parsley and confirmed the presence of two specific apigenin-glycosides through HPLC analysis. The kinetics of extraction was described using non-stationary diffusion model, with a good fit to the experimental data, and the effects of process factors on kinetic model parameters were assessed using a full factorial test plan 2(3).