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A method for preparing 3,4-o-isopropylidene shikimic acid from mango core

A mango pit and oxalic acid technology, applied in the direction of organic chemistry, can solve the problems of ineffective utilization of resources, environmental pollution, discarding of mango pits or raising livestock, etc., and achieve the goal of reducing ineffective utilization of resources and environmental pollution Effect

Active Publication Date: 2019-08-06
广西高企科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a method for preparing 3,4-O-isopropylidene shikimic acid from mango pits to solve the current problems that mango pits are often discarded or raised for livestock, causing environmental pollution and ineffective utilization of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing 3,4-O-isopropylidene shikimic acid from mango core, comprising the following steps:

[0042] S1: crushing the mango core and passing it through a 60-mesh sieve to obtain mango core powder;

[0043]S2: Weigh 92 parts of the mango core powder prepared in step S1, use low-temperature liquid nitrogen beating technology, and beat at a temperature of -12°C to obtain a mango core slurry, and mix the mango core slurry with 16 parts of 1-allyl- 3-Methylimidazole bromide and 20 parts of 1-ethyl-3-methylimidazole diethyl phosphate were mixed evenly, put into an extraction bottle, and extracted for 1.6h at a microwave power of 330W and a temperature of 85°C. Prepare the extract, adjust the pH value of the extract to 3.4, control the temperature at 50°C, decolorize and remove impurities by activated carbon for 1.5 hours, and obtain a decolorizing solution after filtration;

[0044] S3: Concentrate and dry the primary decolorization solution obtained in step S...

Embodiment 2

[0049] A method for preparing 3,4-O-isopropylidene shikimic acid from mango core, comprising the following steps:

[0050] S1: crushing the mango core and passing it through a 50-mesh sieve to obtain mango core powder;

[0051] S2: Weigh 69 parts of the mango core powder prepared in step S1, use low-temperature liquid nitrogen beating technology, and beat at a temperature of -15°C to obtain a mango core slurry, and mix the mango core slurry with 10 parts of 1-allyl- 3-Methylimidazole bromide and 16 parts of 1-ethyl-3-methylimidazole diethyl phosphate were mixed evenly, put into an extraction bottle, and extracted for 2 hours at a microwave power of 250W and a temperature of 78°C to prepare To obtain the extract, adjust the pH value of the extract to 3, control the temperature at 43°C, decolorize and remove impurities by activated carbon for 1.8 hours, and obtain a decolorizing solution after filtration;

[0052] S3: Concentrate and dry the primary decolorization solution obta...

Embodiment 3

[0057] A method for preparing 3,4-O-isopropylidene shikimic acid from mango core, comprising the following steps:

[0058] S1: crushing the mango core and passing it through an 80-mesh sieve to obtain mango core powder;

[0059] S2: Weigh 114 parts of the mango core powder prepared in step S1, use low-temperature liquid nitrogen beating technology, and beat at a temperature of -18°C to obtain a mango core slurry, and mix the mango core slurry with 22 parts of 1-allyl- 3-Methylimidazole bromide and 26 parts of 1-ethyl-3-methylimidazole diethyl phosphate were mixed evenly, put into an extraction bottle, and extracted under the condition of microwave power of 420W and temperature of 90°C for 1.2h, Prepare the extract, adjust the pH value of the extract to 3.6, control the temperature at 56°C, decolorize and remove impurities by activated carbon for 1 hour, and obtain a decolorizing solution after filtration;

[0060] S3: Concentrate and dry the primary decolorization solution ob...

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Abstract

The invention discloses a method for preparing 3,4-O-isopropylidene shikimic acid from mango stones, and belongs to the technical field of 3,4-O-isopropylidene shikimic acid preparation. The 3,4-O-isopropylidene shikimic acid is obtained by the following steps: smashing the mango stones, performing microwave extraction, performing one-time decolorization, performing coarse crystallization, performing secondary decolorization, performing separation and purification by using macroporous adsorption resin, performing concentration crystallization, and performing drying. According to the invention, the purity of the 3,4-O-isopropylidene shikimic acid prepared by the method is equal to 99.13% or more, and the 3,4-O-isopropylidene shikimic acid can be used as a qualitative and quantitative reference substance; and the 3,4-O-isopropylidene shikimic acid in mango stones can be effectively extracted by using the method, and the method facilitates reduction of environmental pollution caused by the mango stones and a problem that resources are not effectively utilized.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of preparation of 3,4-O-isopropylidene shikimic acid, in particular to a method for preparing 3,4-O-isopropylidene shikimic acid from mango pits. [0003] 【Background technique】 [0004] 1-allyl-3-methylimidazolium bromide and 1-ethyl-3-methylimidazolium diethyl phosphate salt solution is a liquid composed entirely of anions and cations at room temperature or near room temperature, composed of specific, It is composed of relatively large and asymmetric organic cations and relatively small inorganic anions. In the above two ionic compounds, the force between anion and cation is Coulomb force, and its magnitude is related to the charge quantity and radius of the anion and cation. The larger the ionic radius, the smaller the force between them, so that the melting point is close to room temperature. Because 1-allyl-3-methylimidazole bromide and 1-ethyl-3-methylimidazolium diethyl phosphate have many ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D317/46
CPCC07D317/46
Inventor 石东秀
Owner 广西高企科技有限公司
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