Method for supercritical extraction of active ingredient of camellia

Abstract

The invention relates to a method for extracting the active components of camellia, which comprises that putting the dry camellia into extracting kettle; processing the CO2 gas into ultra-critical CO2 fluid, heating and pressurizing the connected extracting kettle, analysis kettle and separating post; circulated extracting, adding some clamping agent, adjusting the flux of CO2 fluid and controlling the time, keeping constant temperature and constant pressure; obtaining the active rough product from the outlet of analysis kettle. The invention has low temperature, without solvent to keep the active components most.

Description

technical field [0001] The invention relates to an extraction process for active components of camellias, in particular to an extraction process for supercritical fluid extraction and separation of effective active components in camellias, and belongs to the chemical and chemical technology field of Chinese herbal medicine preparation. Background technique [0002] The active ingredients of camellia have excellent heat-clearing and hemostatic functions, and have been widely used in the treatment of diseases such as medicine and surgery. It is of positive significance to use the medicinal effects of active ingredients of camellia in the field of oral health care, while the traditional active ingredients of camellia The most common extraction method is water extraction or ethanol extraction and crystallization method. These two methods all need to be cooked at high temperature for a long time. Therefore, there are many impurities in the camellia extract extracted by the above-m...

AI Technical Summary

Problems solved by technology

[0002] The active ingredients of camellia have excellent heat-clearing and hemostatic functions, and have been widely used in the treatment of diseases such as medicine and surgery. It is of positive significance to use the medicinal effects of active ingredients of camellia in the field of oral health care, while the traditional active ingredients of camellia The most common extraction method is water extraction or ethanol extraction and crystallization method. These two methods all need to be cooked at high temperature for a long time. Therefore, there are many impurities in the camellia extract extracted by the above-mentioned technology. The low problem is not conducive to the refinement and purification of subsequent processes, and the composition of each batch of extracts is also uncertain, and this method also has the following disadvantages: many processes, complicated and complicated processes, and long time required; and because of these The method requires repeated cooking or distillation, and the heating time is long. When it is added to the toothpaste, it is easy to decompose, hydrolyze or oxidize the active ingredient, which will deepen the color of the finished product and have poor stability; the content of active ingredients and the extraction rate are low.

And it is possible to use some toxic solvents, causing pollution to the environment