Fresh zanthoxylum oil resin separation and purification process

Abstract

The invention discloses a fresh zanthoxylum oleoresin separation and purification process which comprises the following steps: after harvesting fresh zanthoxylum, carrying out cold pressing within two hours to obtain fresh zanthoxylum oleoresin, carrying out countercurrent extraction separation on the fresh zanthoxylum oleoresin through a liquid substance extraction and separation unit of a supercritical CO2 fluid dynamic countercurrent extraction and separation system, and after the countercurrent extraction separation is completed, obtaining fresh zanthoxylum resin from an extraction unit, and obtaining the fresh pepper essential oil through the separation unit. The extraction separation process is as follows: the feeding rate is 40kg/h, the CO2 flow rate is 600L/h, the extraction temperature is 45 DEG C, and the extraction pressure is 20MPa; the separation temperature I is 40 DEG C, the separation pressure I is 7.5 MPa, the separation temperature is 55 DEG C, and the separation pressure II is 4-6 MPa; the total yield of the fresh zanthoxylum oil resin product reaches 98.74%-99.19%, and the separation efficiency reaches 94.00%-99.24%; the volatile oil content of the obtained fresh zanthoxylum bungeanum essential oil can reach 101.94-128.93 ml/100g, and the numb degree is lower than 5 mg/g; and the content of volatile oil in the obtained fresh zanthoxylum bungeanum maxim resin is smaller than 5 ml/100 g, the hemp degree can reach 141.12 mg/g to 182.56 mg/g, and the hemp degree is increased to 42.59% to 53.17%. According to the process disclosed by the invention, the fresh Chinese prickly ash essential oil with high volatile oil content and the fresh Chinese prickly ash resin with high numb degree can be obtained, and the purification effect of the two products is remarkable.

Description

technical field [0001] The invention belongs to the technical field of biochemical products, discloses a fresh pepper oleoresin separation and purification process, specifically discloses a process using supercritical CO 2 A process for fluid dynamic countercurrent extraction and separation of liquid substances, and fresh pepper essential oil and fresh pepper resin prepared by the process. Background technique [0002] Zanthoxylum bungeanum is a condiment unique to my country and rich in resources. At present, there are many domestic research reports on the flavor characteristics and flavor substances extraction of Zanthoxylum bungeanum, but the extraction is limited to steam distillation, organic solvent (ethanol, acetone, etc.) extraction, etc. The steam distillation method can only extract the volatile oil with low boiling point in Zanthoxylum bungeanum, and the organic solvent extraction method has the disadvantages of high impurity content, large loss of flavor compone...

AI Technical Summary

Problems solved by technology

However, molecular distillation equipment requires continuous production, and the equipment has low compatibility. It can only be used for liquid-liquid separation, and other processing operations (such as extraction and separation of solid substances) cannot be realized.

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