Method for extracting high-purity solanesol

A solanesol, high-purity technology, applied in the field of extracting high-purity solanesol, can solve the problems of unrecoverable filler, long production time, and difficulty in realization, and achieves the effects of highly selective separation, reduced difficulty, and enhanced effect.

Inactive Publication Date: 2006-08-16
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In this technology, a pre-column and a separation column in series structure are used for separation and purification, and the relatively large volume of the device is difficult to realize in industrial production.
(3) Purify 70% solanesol raw material with HPLC or medium-pressure silica gel packing column, its purity can reach 98.5%. Recycling, too expensive
This invention belongs to the further purification technology of crude solanesol. Since most of the crude solanesol sources still come from traditional organic solvent extraction technology, many defects of organic solvent extraction cannot be fundamentally avoided.

Method used

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  • Method for extracting high-purity solanesol

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Weigh 100 g of waste tobacco leaves, crush the tobacco leaves to 40 meshes, soak them in water for 5 hours, remove the leaching solution with a centrifuge, and place the treated tobacco leaves at 50° C. to dry. The leachate is collected and reserved for the extraction of nicotine.

[0018] Mix the treated tobacco leaves with 120ml of entrainer, put them into a 1L extraction kettle, and soak for 30 minutes. Set the temperature in the extraction tank to 40°C, the temperature of the separation tank I and the separation tank II is the same as the temperature of the extraction tank, when the temperature reaches the set value, open the inlet valve to feed CO 2 , CO 2 The flow rate is 0.2L / min, and the extraction pressure of the extraction tank is adjusted to 25MPa. The pressures of the separation tank I and the separation tank II are respectively 8MPa and 6MPa. The extraction is carried out every 30 minutes, and the extracts in each separation tank are collected s...

Embodiment 2

[0022] Example 2: Weigh 100 g of waste tobacco leaves, crush the tobacco leaves to 50 meshes, soak them in water for 8 hours, remove the leaching solution with a centrifuge, and place the treated tobacco leaves at 60° C. to dry. The leachate is collected and reserved for the extraction of nicotine.

[0023] Mix the treated tobacco leaves with 120ml of entrainer, put them into a 1L extraction kettle, and soak for 35 minutes. Set the temperature in the extraction tank to 40°C, the temperature of the separation tank I and the separation tank II is the same as the temperature of the extraction tank, when the temperature reaches the set value, open the inlet valve to feed CO 2 , CO 2 The flow rate is 0.33L / min, and the extraction pressure of the extraction tank is adjusted to 28mPa. The pressures of the separation tank I and the separation tank II are respectively 9MPa and 7MPa. The extraction is carried out every 40 minutes, and the extracts in each separation tank are collected ...

Embodiment 3

[0027] Example 3: Weigh 100 g of waste tobacco leaves, crush the tobacco leaves to 60 meshes, soak them in water for 10 hours, remove the leaching solution with a centrifuge, and place the treated tobacco leaves at 70° C. to dry. The leachate is collected and reserved for the extraction of nicotine.

[0028] Mix the treated tobacco leaves with 120ml of entrainer, put them into a 1L extraction kettle, and soak for 40 minutes. Set the temperature in the extraction tank to 40°C, the temperature of the separation tank I and the separation tank II is the same as the temperature of the extraction tank, when the temperature reaches the set value, open the inlet valve to feed CO 2 , CO 2The flow rate is 0.4L / min, and the extraction pressure of the extraction tank is adjusted to 30mPa. The pressures of the separation tank I and the separation tank II are respectively 10MPa and 8MPa. The extraction is carried out every 50 minutes, and the extracts in each separation tank are collected ...

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Abstract

Extraction of high-purity solanesol is carried out by taking waste tobacco leaf as raw materials, adding into water to have pre-treatment, centrifugal drying, supercritical CO2 extracting by two-stage separating, saponification treating the solanesol coarse cream in NaOH alcohol solution, column chromatographing, decompressing and concentrating the eluent, freeze crystallizing and vacuum dry treating to obtain final product with purity above 95%.

Description

technical field [0001] The invention relates to a method for extracting high-purity solanesol. Background technique [0002] Solanesol is one of the active ingredients in tobacco leaves. The extraction technology mainly includes: (1) Tobacco leaves are used as raw materials, and n-hexane and No. 6 solvent oil are used as extraction agents. The solanesol purity is about 18%, and the extraction times are many. The ratio of raw materials to solvents is 1:4-1 : 10, the amount of extraction agent is large, the solvent loss is large, the recovery cost is high, and the production process is cumbersome and time-consuming. (2) With 10% solanesol extract as raw material, the purity of solanesol reaches about 96% by adopting the pre-column and separation column series treatment method. In this technology, a pre-column and a separation column in series structure are used for separation and purification, and the relatively large volume of the device is difficult to realize in industria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/74C07C33/02
Inventor 胡小玲管萍赵亚梅
Owner NORTHWESTERN POLYTECHNICAL UNIV
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