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Technology for extracting nootkatone from shaddock peel

A technology of pomelo ketone and pomelo peel, which is applied in the technical field of extracting pomelo ketone, can solve the problems of unfavorable industrial production, complex extraction process, complex process, etc., and achieve good extraction performance, optimized polymerization conditions, and high extraction rate.

Inactive Publication Date: 2019-02-22
浙江昊唐商业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction process is complicated, and supercritical fluid with high equipment requirements and column chromatography with low separation efficiency are used for separation. The process is complicated and the cost is high, which is not conducive to industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of Molecularly Imprinted Polymer: The preparation method of narone-molecularly imprinted polymer is as follows: Suspension polymerization method is used, with narone as template molecule, methacrylic acid as functional monomer, and ethylene glycol dimethacrylate as Cross-linking agent, azobisisobutyronitrile is used as initiator, acetonitrile is used as porogen, and it is obtained after removing template molecules. The ratio between the template molecule, the functional monomer and the crosslinking agent is preferably 1:4:16; the amount of azobisisobutyronitrile added is 0.5% of the weight of methacrylic acid.

Embodiment 2

[0027] 1) Extract the volatile oil of pomelo ketone: crush 1kg of dried pomelo peel and pass through a 100-mesh sieve, then add it and 5kg of distilled water into the extraction tank, place it on one side of the simultaneous extraction distillation extractor, and the other side with the solvent tank Connected, add 5kg 30-60 petroleum ether in the solvent tank as the extraction agent, heat the extraction tank and the solvent tank separately, the heating temperature of the extraction tank is 110°C; the heating temperature of the solvent tank is 70°C for simultaneous distillation and extraction, and collect the extract , to obtain a solution containing narone volatile oil.

[0028] 2) The extract obtained in step 1) was added with 20% by weight of the narone-molecularly imprinted polymer prepared in Example 1 as an adsorbent, and oscillated and adsorbed for 3 hours; the molecularly imprinted polymer adsorbed with narone was filtered from the liquid phase After separation, add abs...

Embodiment 3

[0030] 1) Extract the volatile oil of pomelo ketone: crush 5 kg of dried pomelo peel and pass through a 100-mesh sieve, then add it and 25 kg of distilled water into the extraction tank, place it on one side of the simultaneous extraction distillation extractor, and the other side with The solvent tanks are connected, and 25 kg of 30-60 petroleum ether is added into the solvent tank as an extraction agent, and the extraction tank and the solvent tank are heated separately, and the heating temperature of the extraction tank is 110°C; the heating temperature of the solvent tank is 70°C for simultaneous distillation and extraction, The extract is collected to obtain a solution containing the volatile oil of narone.

[0031]2) Add 10% by weight of the narone-molecularly imprinted polymer prepared in Example 1 to the extract obtained in step 1) as an adsorbent, shake and adsorb for 3 hours; filter the molecularly imprinted polymer adsorbed with narone from the liquid Phase separati...

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Abstract

The invention discloses a technology for extracting nootkatone from shaddock peel. Simultaneous distillation-extraction and molecular imprinting template extraction are organically combined, nootkatone volatile oil is extracted from the shaddock peel through the simultaneous distillation-extraction, the volatile oil is extracted and separated by an extracting agent containing a molecular imprinting template, high-purity nootkatone is obtained, and the technology is simple and convenient to operate, has low requirement for equipment and facilitates industrial production; in the step of extracting and separating the volatile oil by the extracting agent containing the molecular imprinting template, types and dosages of solvents, functional monomers, cross-linking agents and initiators are selected, so that polymerization conditions are optimized, molecularly imprinted polymers with better particle size distribution and physical stability and good adsorptive property are prepared, nootkatone can be recognized selectively, adsorption extent of nootkatone is high, and the technology has good extraction performance.

Description

technical field [0001] The invention relates to an extraction process, in particular to a process for extracting narone from pomelo peel. [0002] Background technique [0003] Citron is a sesquiterpene ketone isolated from pomelo peel oil and Alaskan cork oil. Alternative name: Nokadone, other names: 5,6-Dimethyl-8-isopropenyl-bicyclo-(4,4,0)-dec-1-en-3-one. Molecular formula: C15H22O, relative molecular mass: 218.34. Physical and chemical properties: crystal, insoluble in water, soluble in organic solvents such as ethanol, melting point 36-37 ℃. Colorless or light yellow oily liquid. The melting point of pure product is 35~36°C°. It has a persistent and strong citrus-like fruity aroma, typical of grapefruit at lower dilutions. It is obtained by oxidation of balenciarene with a similar three-dimensional structure as a raw material. Mainly used in the preparation of various citrus flavors. [0004] Citrus flavor is a kind of flavor widely used in food, beverage an...

Claims

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Application Information

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IPC IPC(8): C07C45/78C07C45/83C07C45/79C07C49/653
CPCC07C45/78C07C45/79C07C45/83C07C2602/28C07C49/653
Inventor 刘得民
Owner 浙江昊唐商业发展有限公司
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