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

ABSTRACT

In this study, the effect of various parameters such as solvent concentration (50 and 80%), extraction temperature (30, 40, and 50°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<±1.6%; standard deviation: SD<±1.5%; the coefficient of determination: R² > 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 2³.

KEYWORDS:

• Kinetics
• extraction
• models
• apigenin-glycosides

Acknowledgments

Research in this paper is part of the project no. 451-03-68/2020-14/200124 financed by the Ministry of Education, Science and Technological Development of the Republic of Serbia.

Correction Statement

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