Supercritical co2 extraction equipment is one of our main products, and its applications are very wide. For example, in the pharmaceutical industry, it can be used for the extraction of effective ingredients of Chinese herbal medicine, the purification of thermosensitive biological products, and the separation of lipid mixtures;In the food industry, the extraction of hops, the extraction of pigments, etc.; in the fragrance industry, the purification of natural and synthetic fragrances; the separation of mixtures in the chemical industry, etc. The following describes its application in the field of Chinese medicine.
Traditional Chinese medicine has a long history of development in China. Traditional Chinese medicine is unique to traditional Chinese medicine. China is a major producer of traditional Chinese medicine and an exporter of traditional Chinese medicine.Its quality directly determines the effectiveness of disease treatment.As an emerging field of the Chinese medicine industry, Chinese medicine extracts are constantly innovating with the continuous development of science and technology.
According to the different principles of traditional Chinese medicine extraction, extraction can be divided into solvent method, steam distillation method and sublimation method.One of the most widely spread is the solvent method. Compared with the other two categories, the process operation is simpler, and the instruments used are not complicated. It is the easiest of the three categories.At present, there are various extraction methods for new medicinal materials, including static extraction methods and dynamic extraction methods, among which dynamic extraction methods include decoction and reflux methods.Mainly used for extraction, concentration, purification, drying and preparation.Among them, the extraction and concentration of the extraction liquid are the key unit operations of modern Chinese medicine pharmacy. At present, the decoction method and the evaporation and concentration process are mainly used, which takes a long time, consumes a lot of energy, uses a large amount of solvent (water or alcohol), and has a high temperature It has a great impact on the quality of heat-sensitive products, causing the loss and deterioration of active ingredients of traditional Chinese medicine.
Supercritical fluids are non-condensable high-density fluids above the critical temperature and critical pressure. Fluids in the supercritical state have excellent solvent properties, low viscosity, and high density. They have good flow, mass transfer, Heat transfer and solubility.There are many substances currently available as supercritical fluids, such as CO2, N2O, SF6, ethane, heptane, ammonia, etc.