Method of extraction and grading purification of ganoderma lucidum spore oil by supercritical CO2

Abstract

The invention relates to the technology of deep processing of ganoderma lucidum spore, in particular to a method of extraction and grading purification of ganoderma lucidum spore oil by supercritical CO2, which comprises the following steps: breaking shell, granulating, palletizing and screening, extracting the ganoderma lucidum spore oil, grading depressurizing, and collecting the ganoderma lucidum spore oil in step; putting ganoderma lucidum spore powder granules into an extracting tank, introducing supercritical CO2 at the pressure of 10-30 MPa and the temperature of 35-60 DEG C; enabling supercritical CO2 dissolved with the ganoderma lucidum spore oil into a primary separating tank by the extracting tank with the pressure of 10-12 MPa and the temperature of 40-60 DEG C, and collecting in step in 0.5-1.0hr / step; and entering a secondary separating tank with the pressure of 5-7 MPa and the temperature of 40-60 DEG C through depressurizing by a valve, collecting in step in 0.5-1.0hr / step, wherein the total time is for 5-7 hr. Since the flows of grading pressurization and step-collection are adopted, the oil and the impurities can be separated online, and the purity of the oil can be improved.

Description

technical field [0001] The present invention relates to the deep processing technology of Ganoderma lucidum spore powder, particularly refers to the utilization of supercritical carbon dioxide (CO 2 ) method for extracting and fractionally purifying Ganoderma lucidum spore oil. Background technique [0002] Ganoderma lucidum has been called "fairy grass" since ancient times. It has a long history of 5,000 years in China. It has always been regarded as a "panacea" by ancient emperors and a symbol of "good luck". ". The Ming Dynasty "Compendium of Materia Medica" records that Ganoderma lucidum "has a bitter taste, non-toxic, nourishes the middle and nourishes Qi, increases wisdom, has a good color, long-term food makes light of body and does not grow old, and prolongs life and immortality." Now, Ganoderma lucidum has been recorded in Chinese Pharmacopoeia, and it is an important raw material of Chinese medicinal materials and health food approved by the state. [0003] Gano...

AI Technical Summary

Problems solved by technology

Currently, most of the supercritical CO 2 The method of extracting spore oil is to put the broken spore powder into the extraction kettle, and pass through supercritical CO 2 Extraction is carried out, and after decompression, it is introduced into a separation tank. After decompression, due to CO 2 The density decreases and the dissolving ability drops, and the spore oil and some other components are separated out and collected together, such as the method provided by Chinese patents CN1094766C, CN100508995C and CN1194079C. In addition to water, there are other components, such as esters, carotene and triterpenoids, etc., which need to be further removed by other methods to obtain spore oil essential oil, which increases the process, and it is difficult to completely remove the impact of impurities oil purity

Now, there are also some methods of extracting spore oil that are classified into two separation kettles under reduced pressure to realize the separation of spore oil and water, such as Chinese patent CN1931195A, this method uses an organic entrainer, which not only needs to extract Contains entrainers for subsequent separations, and the presence of solvent residues in the spore oil affects quality

Chinese patent CN100367975C adopts two-stage depressurization, which can separate spore oil and water in two separation kettles, but the spore powder contains complex and various components, and the spore oil separated out by the first stage depressurization contains some low polarity and fat solubility. Impurities make the color of the oil darker, and the spore oil precipitated in the second stage of decompression, because it contains water and some fat-soluble impurities are difficult to remove, it is all discarded and the yield is reduced.

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