Method for extracting litsea cubeba oil and citral

Abstract

The invention discloses a method for extracting litsea cubeba oil and citral. The method comprises the following steps of selecting high-quality litsea cubeba fruits; slightly damaging the peels of the litsea cubeba fruits to take out seeds, adding an appropriate amount of water, vibrating the litsea cubeba fruits ultrasonically for a certain time, transferring to a homemade distillation device, and starting a heating device and a steam generating device; controlling the temperature of water, supplying cooling water, condensing the product, and collecting the litsea cubeba essential oil; preparing saturated NaHSO3 solution, adding a small amount of HAc solution, and dropwise adding anhydrous ethanol and the litsea cubeba oil into the saturated NaHSO3 solution; stirring the saturated NaHSO3 solution until white crystals appear, standing for some time, and filtering; dissolving the white crystals with 10% NaOH solution, extracting with ethyl ether, separating an organic phase, and removing the ethyl ether by steaming to obtain the citral. By adopting the method disclosed by the invention, the problem that litsea cubeba and citral can be oxidized and condensed easily due to high distillation temperature can be solved, and the extraction efficiency of litsea cubeba oil and citral can be improved. The litsea cubeba oil and citral extracted by adopting the method smell fragrant and are stable in quality.

Description

technical field [0001] The invention belongs to the field of vegetable oils, in particular to a method for extracting litsea cubeba oil and citral. Background technique [0002] Litsea cubeba, also known as pheasant pepper, wood ginger, etc., grows in most parts of southern my country, as well as in Tibet, Taiwan and other places. Litsea cubeba fruit can extract essential oil. The main components of essential oil are citral and limonene, which are widely used in food, soap, cosmetics and other industries; The effect of dispelling cold, its fruit is also called "piper cubeb" in traditional Chinese medicine, and can be used to treat schistosomiasis. Litsea cubeba oil can also be used as a seasoning oil with a lemon aroma. It is non-toxic and has an outstanding anti-mold effect, and is very popular among consumers. [0003] Citral can be used as edible spices, in foods such as fruits and vegetables, as well as in wine making, beverage preparation, flavoring agents, modulation...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for extracting litsea cubeba oil and citral, which aims to solve the problem that in the prior art, the rectification temperature is too high, and citral is easy to oxidize and condense; if the material is heated for too long, it will also oxidize. and condensation; the yield of litsea cubeba oil and citral is low, and the benefit is poor; the product has poor aroma and unstable quality

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