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Method for removing furocoumarins from citrus essential oil

A technology of furanocoumarins and plant essential oils, which is applied in the field of citrus essential oils, can solve the problems of cumbersome and complicated preparation process, organic solvent residue, low efficiency, etc., and achieve the effects of simple process flow, shortened production cycle, and reduced production cost

Active Publication Date: 2014-05-07
BIO SCENT INNOVATION XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the content of furanocoumarins in commercially available essential oils is hundreds or even thousands of times the specified amount, and there is a serious risk of carcinogenicity.
[0004] At present, the preparation process of desensitized citrus essential oil is cumbersome and complicated, and the efficiency is low
Solvent extraction, activated carbon adsorption, urea inclusion technology, column chromatography and other methods are mainly used. These methods have disadvantages such as incomplete removal of furanocoumarins, residual organic solvents, low efficiency, and serious damage to active ingredients in essential oils. Safe use of essential oils

Method used

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  • Method for removing furocoumarins from citrus essential oil

Examples

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Effect test

example 1

[0040] Crush the dried lemon peel to about 60 mesh, put it into the extraction kettle and compact it. Set the extraction pressure to 7.5MPa, the extraction temperature to 32°C, the temperature of the separation tank I to 45°C, the pressure to 6MPa, and the pressure to the separation tank II to 4.5MPa. After continuous extraction for 2 hours, lemon essential oil with a furanocoumarin content of less than 200ppm can be obtained, which can be added to cosmetics according to the prescribed amount of 0.5%. The furanocoumarin content is less than 1ppm, which meets the requirements of international standards (<1ppm) .

example 2

[0042] 300g of crudely squeezed sweet orange essential oil with a furanocoumarin content of 2766ppm was completely absorbed with 400g of 40~60 mesh microsphere silica gel, mixed evenly, put into a 2L extraction kettle and compacted, then filled with microsphere silica gel without adsorbed essential oil and compacted. Set the extraction pressure to 40MPa, the extraction temperature to 60°C, the temperature of the separation tank I to 65°C, the pressure to 6MPa, and the pressure to the separation tank II to 4.5MPa. Carbon dioxide is continuously pumped into the extraction kettle. Under this process, the content of furanocoumarins in the sweet orange essential oil collected in the separation kettle is 100ppm, which is added to cosmetics at 0.5% according to regulations, and the content of furanocoumarins is 0.5ppm, which is in line with the international standard. required (<1ppm).

example 3

[0044] Put the crude lemon essential oil with a furanocoumarin content of 2541ppm into a container that can lead to the extraction kettle, absorb 300g of the crude lemon essential oil with 350ml, 60-80 mesh diatomite, mix it and put it into a 2L extraction kettle, and then Load 1650ml, 60~80 mesh diatomite. Set the extraction pressure to 20MPa, the extraction temperature to 40°C, the temperature of the separation tank I to 45°C, the pressure to 6MPa, and the pressure to the separation tank II to 4.5MPa. Under this process, the content of furanocoumarins in the lemon essential oil collected in the separation kettle is 40ppm, which is added to cosmetics at 0.5% according to the regulations, and the content of furanocoumarins is 0.2ppm, which meets the requirements of international standards (<1ppm).

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Abstract

The invention discloses a method for removing furocoumarins from citrus essential oil, which uses supercritical carbon dioxide extraction, takes citrus fruit, fruit skin, leaves and flowers or essential oil extracted from the fruit, fruit skin, leaves and flowers as raw material, obtains safe environment-friendly citrus essential oil without furocoumarins under carbon dioxide supercritical extraction conditions of a pressure of more than or equal to 7.3MPa and a temperature of more than or equal to 32 DEG C and reduces the furocoumarin content in the citrus essential oil to less than 200ppm. As the essential oil content in cosmetics is usually 0.5 percent, so the content of the furocoumarin in the citrus essential oil in the cosmetics is less than 1ppm which is in accordance with a national standard. Meanwhile, the unique fragrance of the citrus essential oil is retained, and thus, high-quality non-photosensitive citrus essential oil is obtained. According to the new method, the simple and short process flow has high repeatability, the operation is convenient, and environment pollution is avoided.

Description

technical field [0001] The invention relates to a method for extracting and separating essential oils, in particular to a method for removing furanocoumarin components from citrus essential oils to obtain citrus essential oils from which furanocoumarins have been removed. Background technique [0002] Citrus essential oils (including lemon, bergamot, lime, grapefruit, sweet orange, grapefruit, bitter orange, tangerine and other citrus) essential oils are the most commonly used essential oil products on the market today. It is extracted from the peels, leaves, flowers and other tissues of citrus plants by cold pressing, cold grinding, solvent extraction, distillation, microwave extraction, etc. It has a fresh, sweet smell and a characteristic fruity aroma of citrus . It has antibacterial and anti-inflammatory effects, stimulates vitality, activates thinking and stimulates the central nervous system. It can obviously improve some emotions of stress, anxiety, depression, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02
Inventor 刘祝君曾骥孟陈康刘节喜朱洪珍郑声煊谢加凤伍宏李煌基
Owner BIO SCENT INNOVATION XIAMEN