Aqueous two-phase system and application thereof to enrichment of trace amount of aromadendrene
An aqueous two-phase system, the technology of vanillene, which is applied in the technological fields of food, biotechnology and analytical chemistry, can solve the problems of low vanillene residue, large error of analysis method, interference of determination purity, etc. Pure, easy to handle, fast mass transfer and equilibration results
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Embodiment 1
[0058] Take 5.8 of 1-ethyl-3-methylimidazole tetrafluoroborate ionic liquid, add 1.411g of acetone and an appropriate amount of distilled water to make the total mass of the system 10g. Then add 2 g of vanillaene to be enriched solution, shake in a constant temperature shaker at 40° C. and pH 2.0 for 30 min, and then stand for extraction for 2 h after phase separation.
[0059] The concentration of remaining vanillane in the organic phase was determined, and the extraction rate of vanillane was calculated from the content of vanillane in the organic phase before and after the extraction. The extraction rate of vanillane was 96%, indicating that this invention has a good effect on trace vanillane in Zanthoxylum oleoresin. Separation and enrichment.
Embodiment 2
[0061] The extraction method in this example is the same as that in Example 1, except that the conditions in the extraction process are different. In this example, the amount of ionic liquid 1-ethyl-3-methylimidazole tetrafluoroborate added is 6.339g, The remaining conditions remain unchanged.
[0062] The concentration of remaining vanillane in the organic phase was determined, and the extraction rate of vanillane was calculated from the content of vanillane in the organic phase before and after extraction to 92.4%, indicating that this invention has a general extraction effect on trace vanillene in Zanthoxylum oleoresin .
Embodiment 3
[0064] The extraction method in this example is the same as that in example 1, except that the conditions in the extraction process are different. In this example, the amount of ionic liquid 1-ethyl-3-methylimidazole tetrafluoroborate added is 5.335g. The remaining conditions remain unchanged.
[0065] The concentration of remaining vanillane in the organic phase was determined, and the extraction rate of vanillane was calculated from the content of vanillane in the organic phase before and after extraction to 91.3%, indicating that this invention has a general extraction effect on trace vanillane in Zanthoxylum oleoresin .
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