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Document Type and Number:
WIPO Patent Application WO/2021/169929
Kind Code:
An impurity removal and purification method for a bonded state aromatic substance, comprising: adding juice to an adsorption resin for eluting to obtain a first crude product; extracting the first crude product to obtain an oily second crude product; soaking the second crude product in ethanol after the soaking is ended, oscillating the soaked solution, and then performing film filtration, and performing reduced pressure rotary evaporation on the obtained aqueous phase to obtain a bonded state aromatic substance refined product. A free state aromatic substance in the juice is first removed by means of the adsorption resin and the extraction step, and then the crude product is soaked in ethanol, and oscillation and film filtration are carried out, which can break the coating of the bonded state aromatic substance by impurities such as pectin and oily substances. Impurities such as pectin and oily substances are effectively removed for the obtained refined product while it is ensured that the content of the bonded state aromatic substance is not affected, the measurement stability of the bonded state aromatic substance is ensured during the subsequent quantitative analysis, and the error in the quantitative analysis is reduced.

Application Number:
Publication Date:
September 02, 2021
Filing Date:
February 23, 2021
Export Citation:
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International Classes:
C07B63/00; C11B9/00; G01N30/84
Foreign References:
Other References:
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