A process for extracting Dendrobium officinale extract from Dendrobium officinale at low temperature by heat reflux

Abstract

The invention discloses a process for extracting an extract of Dendrobium sheathes from Dendrobium sheathes at low temperature under heat reflux, which comprises the following steps: adding Dendrobium sheathes and a solvent into an extraction tank for vacuum steam extraction, and ultrasonically assisted extraction, and then sending Enter the film heater to heat the film, after being evaporated and concentrated by the evaporator, it is sent to the sedimentation tank through a stainless steel delivery pump, and the supernatant is taken after precipitation in the sedimentation tank, and the supernatant is concentrated by a multifunctional alcohol recovery concentrator to obtain concentration liquid and dilute ethanol, dilute ethanol is obtained concentrated ethanol through a preparation tank, and the concentrated solution is vacuum-dried or spray-dried and then pulverized to obtain the Dendrobium sheath extract. The extraction method of the present application has simple steps and is easy to operate. After extraction by this method, the transfer rate of effective components of Dendrobium sheathes and the yield of Dendrobium dendrobii extracts are relatively high. 88.6%.

Description

technical field [0001] The invention belongs to the technical field of plant extraction processes, and in particular relates to a process for extracting Dendrobium officinale extracts from Dendrobium officinale at low temperature by heat reflux. Background technique [0002] Dendrobium is a famous yin-tonifying Chinese medicine, which has the functions of nourishing yin and clearing heat, promoting body fluid and benefiting the stomach, moistening the lungs and relieving cough, benefiting the kidneys and improving eyesight. Modern research has shown that it has the functions of anti-tumor, enhancing immunity, anti-platelet aggregation, improving vision, dilating blood vessels, and anti-oxidation. The genus Dendrobium is one of the largest genera of the orchid family, with more than 1,500 species in the world, widely distributed in tropical and subtropical regions such as Asia, Europe and Oceania. There are about 76 species in my country, mainly distributed in Southwest, Eas...

AI Technical Summary

Problems solved by technology

[0008] However, the above patent applications and the extraction method of the Dendrobium sheath extract in the prior art are relatively cumbersome, and the extraction rate of the Dendrobium sheath extract is not high, resulting in waste of resources