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Saturated urushiol separation and purification method

A technology for separation and purification of urushiol, applied in the field of separation and purification of natural products, can solve problems such as chronic poisoning and blood damage, and achieve the effects of less environmental pollution, less harm to operators and wide application

Active Publication Date: 2015-11-04
SICHUAN LINGDUN ECOLOGICAL AGRI TECHDEV
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Problems solved by technology

[0007] In long-term exposure, benzene will cause great damage to the blood, causing chronic poisoning

Method used

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  • Saturated urushiol separation and purification method
  • Saturated urushiol separation and purification method
  • Saturated urushiol separation and purification method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] 1. Weigh 8g of saturated urushiol crude product (saturated urushiol content 45%) and dissolve it in 120ml of petroleum ether (boiling range 90~120℃) by ultrasonic wave, weigh 32g of medical grade refined silica gel as filler, and pass through the chromatography column.

[0038] 2. Use diethyl ether and isopropanol with a volume ratio of 7:13 as the eluent, and the eluent is 5 times the volume of silica gel to elute the chromatography column.

[0039] 3. Collect the eluate and concentrate under reduced pressure to about 1 / 3 of the original volume.

[0040]4. After the concentrated solution was left to stand for 2 hours, the solution became flocculent, forming small solid particles of saturated urushiol, which was suction filtered with a sand core funnel, and a small amount of petroleum ether (boiling range 90~120°C) was used during the suction filtration ) and rinsed 3 times, the resulting solution was dissolved in petroleum ether, and then the above-mentioned standing, ...

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Abstract

The invention relates to the filed of natural product separation and purification, in particular to a saturated urushiol separation and purification method. The method comprises the steps that a saturated urushiol crude product which is prepared through hydrogenation reduction is dissolved with petroleum ether, silica gel serves as filler for conducting column chromatography isolation, diethyl ether and isopropanol serve as eluent, mixing and elution are conducted according to the volume ratio 7:(12-14)(g:ml), eluant is subjected to concentration, washing and recrystallization, and a high-purity saturated urushiol standard product is obtained. The saturated urushiol prepared through the method is extremely high in purity, high in yield, simple in method and operation, low in toxicity and environment protective.

Description

technical field [0001] The invention relates to the field of separation and purification of natural products, in particular to a method for separation and purification of saturated urushiol. Background technique [0002] China is rich in lacquer resources, and raw lacquer is the world-famous "king of paint". Due to the current chaos in the raw lacquer market, the phenomenon of adulteration and fraud has disrupted the raw lacquer market. Saturated urushiol is a standard product for physical and chemical testing of raw lacquer quality, which is far from meeting the needs of the market. The main reason is that it is difficult to obtain high-purity saturated urushiol. At present, some large research institutions and large enterprises in China are preparing purified saturated urushiol standard products by themselves. For some small and medium-sized enterprises, it is difficult to purchase saturated urushiol standard products in the market. [0003] At present, the purification o...

Claims

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Application Information

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IPC IPC(8): C07C37/82C07C39/08
CPCC07C37/82C07C39/08
Inventor 万兵王敏吴久容王健
Owner SICHUAN LINGDUN ECOLOGICAL AGRI TECHDEV
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