A method for removing bitter substances from peony seed oil

Abstract

The invention relates to a method for removing bitter substance from peony seed oil by adopting a supercritical CO2 extraction technology. The method comprises the specific steps that (a) peony seed oil is pumped into an extraction kettle first, then CO2 is pumped into the extraction kettle, the pressure in the extraction kettle is regulated to be 15-25 MPa, and then standing is performed at the 25-30 DEG C temperature for half an hour; (b) after standing, the pressure is reduced to be 12-18 MPa, continuous CO2 pumping is performed, the extraction process is performed under 12-18 MPa extraction pressure and at the 25-30 DEG C temperature, and oil is collected; (c), the operation is repeated for 5-6 times, and continuous extraction is performed to collect and extract residual oil in the kettle. The method has the advantages that the supercritical CO2 extraction technology is utilized to remove the residual bitter substance in the peony seed oil, the traditional high-temperature operation problem is avoided first according to the method, and no pollutant is left in a product; in addition, the method facilitates separation between the peony seed oil and residual oil and collection and analysis of the residual oil.

Description

technical field [0001] The invention relates to the technical field of vegetable oil purification technology, in particular to a method for removing bitter substances from peony seed oil, specifically using supercritical CO 2 Extraction technology. Background technique [0002] Peony seed oil is a vegetable oil extracted from peony seeds, which is a unique tree nut oil in China. Peony seed oil contains 17 kinds of fatty acid components, the unsaturated fatty acid content reaches more than 90%, and the polyunsaturated fatty acid-linolenic acid (omega-3 series) content exceeds 40%, which is 140-200 times that of general vegetable oil. Linolenic acid has obvious effects on enhancing intelligence, enhancing immunity, protecting eyesight, lowering blood lipid, blood pressure, blood sugar, inhibiting hemorrhagic brain disease and thrombotic disease, inhibiting the occurrence and metastasis of cancer, preventing inflammation and slowing down human aging. There is a general lack o...

AI Technical Summary

Problems solved by technology

However, after high temperature, the multivitamins, natural antioxidants and polyphenols contained in the original virgin peony seed oil will lose a lot of beneficial ingredients

There are also literature reports that use microcapsule method, weak acid and weak base and other solvent immersion methods to remove bitterness. These methods will inevitably leave a certain amount of solvent, which is not only unfavorable for the health of the eater, but also causes certain troubles for further purification.