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Method for extracting citral from fruit of cubeb litsea tree

A technology of Litsea Cubeba and Litsea Cubeba Oil, applied in the direction of producing fat, essential oil/fragrance, etc., which can solve the problems of poor aroma, condensation, and poor benefit of products

Inactive Publication Date: 2010-09-29
CHENZHOU MIROHERB BIOLOGICAL PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method for extracting litsea cubeba oil has the following problems: 1, the rectification temperature is too high, and citral is easy to oxidize and condense
2. If the material is heated for too long, it will also oxidize and condense
3. The yield of citral is about 58-60%, and the benefit is poor
4. The product has poor aroma and unstable quality

Method used

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  • Method for extracting citral from fruit of cubeb litsea tree

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Put 13,500 kg of fresh Litsea cubeba fruits that have been cleaned and put into the crude extraction tank. In the steam, keep the pressure in the extraction tank at 0.1MPa; regularly draw a vacuum of about 0.06MPa. The steam containing litsea cubeba oil is introduced into the cooler to cool the oil-water-gas mixture to below 25°C. Oil-water liquid mixture is carried out oil-water separation, obtains 842.7 kilograms of 80.1% brown-yellow thick litsea cubeba oil. The crude litsea cubeba oil is introduced into the fine extraction tank, and the feeding amount does not exceed 75% of the volume of the fine extraction tank, and the litsea cubeba oil is extracted into steam, and the pressure in the extraction tank is kept at 0.1 MPa; the vacuum is regularly drawn at about 0.06 MPa. The steam containing litsea cubeba oil is introduced into the cooler, and the oil-water gas mixture is cooled to below 25°C; the oil-water liquid mixture is subjected to oil-water separation to obta...

specific Embodiment approach 2

[0015] Put 1,500 kg of fresh Litsea cubeba fruits that have been cleaned into the crude extraction tank, and the feeding amount does not exceed 75% of the volume of the crude extraction tank. Introduce steam into the crude extraction tank to distill the litsea cubeba fruit and bring the litsea cubeba oil into the In the steam, keep the pressure in the extraction tank at 0.1MPa; regularly draw a vacuum of about 0.06MPa. The steam containing litsea cubeba oil is introduced into the cooler to cool the oil-water-gas mixture to below 25°C. Oil-water liquid mixture is carried out oil-water separation, obtains 77.3% brown-yellow thick litsea cubeba oil 102.8 kilograms. The crude litsea cubeba oil is introduced into the fine extraction tank, and the feeding amount does not exceed 75% of the volume of the fine extraction tank, and the litsea cubeba oil is extracted into steam, and the pressure in the extraction tank is kept at 0.1 MPa; the vacuum is regularly drawn at about 0.06 MPa. ...

specific Embodiment approach 3

[0016] Put 4,000 kg of fresh Litsea cubeba fruits that have been cleaned and put into the crude extraction tank. In the steam, keep the pressure in the extraction tank at 0.1MPa; regularly draw a vacuum of about 0.06MPa. The steam containing litsea cubeba oil is introduced into the cooler to cool the oil-water-gas mixture to below 25°C. Oil-water liquid mixture is carried out oil-water separation, obtains 235.9 kilograms of 75.4% brown-yellow thick litsea cubeba oil. The crude litsea cubeba oil is introduced into the fine extraction tank, and the feeding amount does not exceed 75% of the volume of the fine extraction tank, and the litsea cubeba oil is extracted into the steam, and the pressure in the extraction tank is kept at 0.1 MPa; the vacuum is regularly drawn at about 0.06 MPa. The steam containing litsea cubeba oil is introduced into the cooler, and the oil-water gas mixture is cooled to below 25°C; the oil-water liquid mixture is subjected to oil-water separation to o...

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Abstract

The invention relates to a method for extracting citral from fruit of cubeb litsea tree, which comprises the steps such as simple distillation, cooling, oil-water separation, fractionating distillation, cooling, oil-water separation and the like. The method has simple process. Materials are uniformly heated, the heating time is short, oxidation and condensation of citral can be effectively prevented, product yield can be improved to more than 70 percent, and content of citral can reach 95 to 99 percent. The fragrance of the product is pure, and the quality is stable.

Description

Technical field [0001] The invention relates to a method for extracting citral from litsea cubeba. Background technique [0002] Litsea cubeba oil is one of the important natural fragrances in the fragrance industry, and its main component is Niangmeng citral. In the prior art, traditional distillation methods are generally used to extract litsea cubeba oil. Distillation equipment is mainly composed of three parts: steam barrel, boiler and condenser. The processing method is as follows: boil the water first, and then put the raw materials into the steamer. The steam is cooled to obtain litsea cubeba oil. The main component of litsea cubeba oil is citral, which is a heat-sensitive substance, and it is easy to polymerize when heated, which affects the yield and aroma of citral. The traditional method for extracting litsea cubeba oil has the following problems: 1. The rectification temperature is too high, and citral is easy to oxidize and condense. 2. If the material is h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/00
Inventor 黄文飞刘志兵刘敬哲邱文敏
Owner CHENZHOU MIROHERB BIOLOGICAL PRODS
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