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Method for extracting and separating shikimic acid from star anise

A technology of star anise and shikimic acid, applied in the separation/purification of carboxylic acid compounds, organic chemistry, etc., can solve the problems of long production cycle, high cost, and low yield, and achieve short production cycle, low cost, and high product yield. high rate effect

Active Publication Date: 2008-04-30
SHAANXI JIAHE PHYTOCHEM
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  • Description
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  • Application Information

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Problems solved by technology

[0014] The purpose of the present invention is to provide a method for extracting and separating shikimic acid from star anise, which solves the technical problems of long production cycle, high cost and low yield in the background technology, and also obtains the by-product star anise oil, and carries out the process of star anise Comprehensive utilization

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  • Method for extracting and separating shikimic acid from star anise
  • Method for extracting and separating shikimic acid from star anise

Examples

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Embodiment 1

[0042] Embodiment 1: Take 1000 kilograms of pulverized star anise raw materials, and degrease them with petroleum ether with a flat-rotating extractor. The degreased material was extracted 3 times with 80% ethanol with 6 times the volume of heat under reflux, the first two times were 1.5 hours each, and the third time was 1 hour. The extracts were combined, filtered and concentrated to a relative density of 1.15. Add 2 times the amount of water, decolorize with 3% activated carbon at 60°C until the liquid turns pale yellow, concentrate under reduced pressure to a relative density of 1.21, place at room temperature for 48 hours, centrifuge, and filter to obtain crude crystals. The crude crystals were dissolved in 70% ethanol, decolorized with 5% activated carbon until colorless, concentrated to a relative density of 1.20, left to crystallize for 30 hours, centrifuged with a centrifuge, filtered, and dried to obtain 54.0 kg of shikimic acid product. The content of shikimic acid ...

Embodiment 2

[0043] Example 2: Take 1000 kg of pulverized star anise raw material, degrease with petroleum ether with a horizontal rotary extractor, extract the degreased material with 5 times the volume of 90% ethanol under heat reflux for 3 times, each time for two hours, and combine the extractions liquid, filtered and concentrated to a relative density of 1.20. Add 3 times the amount of water, decolorize with 5% activated carbon at 80°C until the liquid turns pale yellow, concentrate under reduced pressure to a relative density of 1.20, place at room temperature for 48 hours, centrifuge, and filter to obtain crude crystals. The crude crystals were dissolved in 85% ethanol, decolorized with 5% activated carbon until colorless, concentrated to a relative density of 1.22, left to crystallize for 36 hours, centrifuged, filtered, and dried to obtain 56.4 kg of shikimic acid product. The shikimic acid content is 99.12%. The content of shikimic acid is shown in Figure 2 and Table 2.

[0044...

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Abstract

The invention relates to a process for extracting and separating shikimic acid from star anise, which comprises degreasing broken star anise, thermally refluxing and extracting the degreased material for 2-3 times by using 5-6 times amount organic solvent, filtering and concentrating to obtain quintessence with specific density of 1.20-1.30, adding water at 2-5 times amount of water, and using active carbon to decolorize until the liquid is stramineus, depressurizes and concentrates at vacuum until relative density is 1.20-1.22, then centrifugaling, filtering and drying to obtain shikimic acid extractive. The invention can resolve the technical problems in background technique as high production cost and low yield, while the invention has simple production art, short period, little environment pollution, and high product purity of more than 98%, while the degreased start anise fat can be used as food additive.

Description

technical field [0001] The invention relates to an extraction method for extracting organic acids from plants, in particular to a method for extracting and separating shikimic acid from star anise. Background technique [0002] At present, shikimic acid is mainly obtained by chemical synthesis, microbial fermentation and extraction from plants. The production of shikimic acid by chemical synthesis has complicated steps and serious environmental pollution. The production of shikimic acid by microbial fermentation has strict requirements on production equipment and environment, and the cost is relatively high. The cost of the plant extraction method is relatively low. Since the raw material shikimic acid content in the star anise is relatively high, more shikimic acid is extracted and separated from the star anise. [0003] Chinese patent CN1830939 published on September 13, 2006 discloses a "method for extracting and separating shikimic acid from star anise". In the method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C62/04C07C51/42
Inventor 王春德祁春雷高娟王晓莹邓尚勇肖红
Owner SHAANXI JIAHE PHYTOCHEM
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