Optimization of mechanically assisted coamorphous dispersion extraction of hydrophobic compounds from plant tea (Citri Reticulatae Pericarpium) using water

Abstract

This study aimed to establish a novel mechanically assisted coamorphous dispersion extraction (MADE) method for the extraction of hydrophobic compounds (hesperidin, nobiletin and tangeretin) from Citri Reticulatae Pericarpium using water. The surface morphology, particle size distributions, phase states and functional groups of the coground product surface were characterized by Scanning Electron Microscopy, X-ray diffraction and Fourier transform infrared spectroscopy. The parameters affecting the efficiency of extraction method were optimized by single-factor experiments and response surface methodology. The method showed good linear relationships in the range of 1-500 μg/mL with correlation coefficients (R²) ≥ 0.9990, low limits of detection ranging from 3.0 to 28.3 ng/mL, and acceptable recoveries ranging from 87.0 to 91.0%. Therefore, the proposed MADE method is a promising, efficient and organic solvent-free method for the extraction of hydrophobic compounds from plant tea.

Keywords: Citri Reticulatae Pericarpium; Hydrophobic compounds; Mechanically assisted coamorphous dispersion extraction; Plant tea; Response surface methodology.