Products Description

Subcritical water extraction is a kind of equipment that uses water in subcritical state as an extractant, and changes the polarity, surface tension and viscosity of water by controlling the temperature and pressure, so as to realise the effective extraction of substances. This technology can achieve selective extraction of organic compounds with different polarities in the sample matrix without or with little use of organic solvents, and has the advantages of simple equipment, short extraction time and environmental protection. Subcritical water extraction technology has a wide range of application prospects in the field of plant extracts, food by-product extraction, extraction of biologically active compounds.

The technical principle of subcritical water extraction equipment is mainly based on the special physicochemical properties of subcritical water, such as maintaining the liquid state under a certain pressure while its dielectric constant and solubility will change. This state of water can effectively dissolve and transfer substances, especially at high temperature and high pressure conditions, can significantly improve the extraction efficiency and mass transfer efficiency, while maintaining the biological activity of the extracted substances.

In addition, the subcritical water extraction also features energy saving and emission reduction, effective recycling of extraction solvents, which is of great significance for enhancing the extraction capacity of the apparatus and realising green chemical processes. With the continuous development and improvement of the technology, subcritical water extraction technology and its equipment will be more widely used in many fields, providing new solutions for environmental protection and efficient use of resources.