Application of Supercritical CO2 extraction technology in propolis extraction:
Whether imported or domestically produced propolis products on the market, almost all can be seen in black or russet liquid or capsule.
It is due to the fact that a polyphenol caffeic acid polymer is formed when propolis propolis is dissolved in alcohol. At the same time, there is alcohol residue in traditional alcohol extraction, which increases the defects such as allergens and long production cycle.
Using CO2, the changes in the pressure and temperature of the gas in the supercritical state can easily dissolve and separate the propolis from the black and taupe propolis, ensuring a very pure yellow propolis with no taste that is difficult to eat.
The CO2 is colorless, tasteless and non-toxic, and there is no solvent residue in the propolis extracted by supercritical CO2 fluid, and no other allergens can be produced, and absolutely safe, healthy and natural yellow propolis can be obtained.
Although there are a lot of impurities and insect residues in propolis, but under a certain temperature and pressure, the supercritical state of CO2, the fluid in the extraction is only dissolved for propolis, and everything else is excluded, so no residue and impurities will enter the propolis, but are all removed as the residue after extraction.