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Extraction additive and method for extracting plant essential oil by supercritical extraction

A supercritical extraction method and plant essential oil technology, which is applied in the field of flavor and fragrance preparation, can solve the problems of loss of easily oxidized flavor substances, unremarkable sensory style characteristics, and easy volatility.

Active Publication Date: 2022-06-21
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of the above-mentioned entraining agents is often relatively large. When the aroma components are extracted, it also causes the dissolution of macromolecules such as proteins and polysaccharides. Although the extraction efficiency has been improved to a certain extent, post-processing is required to further remove them. At the same time, in the process of removing the entrainer, long-term heating will cause the loss of volatile and oxidizable aroma substances, resulting in the lack of outstanding sensory style characteristics of the product

Method used

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  • Extraction additive and method for extracting plant essential oil by supercritical extraction
  • Extraction additive and method for extracting plant essential oil by supercritical extraction
  • Extraction additive and method for extracting plant essential oil by supercritical extraction

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Embodiment 1

[0018] This embodiment provides an extraction additive which is 3-propyl-(methylpentapolyoxyethylene)-1,1,1,3,5,5,5-heptamethyltrisiloxane.

[0019] The present embodiment provides a method for extracting rose essential oil by supercritical extraction, comprising: placing 100 g of dried fresh rose petals in a supercritical extraction kettle, then adding 2.67 g (i.e., 0.3%, under the experimental conditions, The density of carbon dioxide is 890.92kg / m 3 ) of 3-propyl-(methylpentapolyoxyethylene)-1,1,1,3,5,5,5-heptamethyltrisiloxane, open the supply valve of the carbon dioxide storage tank and inject 1000mL of supercritical carbon dioxide solvent (i.e. the ratio of material to liquid is 1:10g / mL), dynamic extraction was performed for 4h under the conditions of 45°C, pressure of 30MPa, and flow rate of 25L / h to obtain rose extract; the rose extract first entered the first-stage separator for cooling Decompression treatment is carried out to remove macromolecular substances with ...

Embodiment 2

[0032] This embodiment provides an extraction additive which is 3-propyl-(methylnonapolyoxyethylene)-1,1,1,3,5,5,5-heptamethyltrisiloxane.

[0033] The present embodiment provides a method for extracting rose essential oil by supercritical extraction, comprising: placing 100 g of dried fresh rose petals in a supercritical extraction kettle, then adding 4.81 g (that is, 0.6%, under the experimental conditions, The density of carbon dioxide is 890.92kg / m 3 ) 3-propyl-(methylnonapolyoxyethylene)-1,1,1,3,5,5,5-heptamethyltrisiloxane, open the supply valve of the carbon dioxide storage tank and inject 900 mL of supercritical carbon dioxide solvent ( That is, the ratio of material to liquid is 1:9 g / mL), and dynamic extraction was carried out for 4 h under the conditions of 45° C., pressure 30 MPa, and flow rate 25 L / h to obtain rose extract; the rose extract first entered the first-stage separator for cooling and reducing. Pressure treatment to remove macromolecular substances wit...

Embodiment 3

[0036] This embodiment provides an extraction additive which is 3-propyl-(methylpentapolyoxyethylene)-1,1,1,3,5,5,5-heptamethyltrisiloxane.

[0037] The present embodiment provides a method for extracting tobacco essential oil by supercritical extraction, comprising: filling 100 g of fresh cut tobacco into a supercritical carbon dioxide extraction kettle, and then adding 0.83 g (that is, 0.1%, under the experimental conditions, the density of carbon dioxide 834.89kg / m 3 ) 3-propyl-(methylpentapolyoxyethylene)-1,1,1,3,5,5,5-heptamethyltrisiloxane, open the supply valve of the carbon dioxide storage tank and inject 1000 mL of supercritical carbon dioxide solvent ( That is, the ratio of material to liquid is 1:10g / mL), dynamic extraction is carried out for 2h under the conditions of 50°C, pressure 25MPa, and flow rate 30L / h to obtain tobacco extract; the tobacco extract first enters the first-stage separator for cooling and reducing. Pressure treatment to remove macromolecular s...

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Abstract

The invention provides an extraction additive, which is a polyoxyethylene siloxane ether compound used for extracting plant essential oils. The general structural formula of the polyoxyethylene siloxane ether compound is, wherein, the general structure The degree of polymerization n in the formula takes a value of 5-10. The present invention also provides a method for extracting plant essential oil by means of supercritical extraction. The method mainly uses supercritical carbon dioxide extraction and adds the above-mentioned extraction additive to extract plant essential oil from plant raw materials. The present invention uses the above-mentioned extraction additives to realize more efficient extraction of the aroma substances of natural plant raw materials, effectively improve the extraction efficiency of plant essential oils, and the addition of the above-mentioned extraction additives is relatively low, and no additives need to be removed after supercritical carbon dioxide extraction, that is Higher-quality plant essential oils can be obtained directly, and the loss of aroma substances caused by removing the extraction additives can be avoided.

Description

technical field [0001] The invention belongs to the field of preparation of flavors and fragrances, and in particular relates to an extraction additive and a method for extracting plant essential oils by using a supercritical extraction method. Background technique [0002] Plant essential oil is a kind of volatile oily liquid that exists in the leaves, roots, bark, flowers and fruits of aromatic plants, can be distilled with steam and has a certain smell. At present, the methods for obtaining plant essential oils mainly include extrusion method, steam distillation method, organic solvent extraction method, etc. The extraction efficiency of extrusion method and steam distillation method is low. The organic solvent extraction method not only requires a large amount of organic solvent, which is easy to pollute the environment, but also requires operations such as freezing dewaxing and distillation in the post-processing process, and the process is complicated. In recent years...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/58
CPCC11B9/025Y02P20/54
Inventor 史清照徐秀娟刘珊张启东柴国璧席辉毛健范武刘俊辉宋瑜冰张文娟胡军屈展杨伟平姬凌波霍现宽
Owner ZHENGZHOU TOBACCO RES INST OF CNTC