There are three important process occur in the extract are:-The solubility of the solute in the solvent.-The diffusion of solute in the solvent.-The movement of solute molecules through the cell wall of plants.The factors of influence on this process (the nature of the solute, solvent, temperature, pressure, composition of the cell wall, the size of the u.s. segment medicinal powder ...) will determine the quality and effectiveness of the process of extraction.
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