Method for extracting larch arabinogalactan

A technology of arabinogalactan and an extraction method, which is applied in the field of natural product chemistry and achieves the effects of saving production cost, high yield and simple operation procedure

Inactive Publication Date: 2015-10-07
NORTHEAST FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few research reports on the use of ionic liquid solutions to extract natural active substances.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 120 liters of petroleum ether after crushing 20kg of shade-dried larch wood chips, degrease treatment twice, each time for 4 hours, filter to obtain defatted wood powder, then add 160L 0.5mol / L 1-butyl-3-methyl chloride Imidazolium ionic liquid aqueous solution, ultrasonic power 600W, ultrasonic time 2h, filter to obtain the extract, then add 640L of absolute ethanol, filter after precipitation to obtain a filter cake, after drying the filter cake for 24 hours, obtain larch arabinogalactan 5.95 kg.

Embodiment 2

[0020] After crushing 200g of shade-dried larch wood chips, add 2 liters of petroleum ether with a boiling range of 60-90°C, degrease treatment for 4 times, each time for 5 hours, filter to obtain defatted wood powder, and then add 4L of 1-butyl-3-chloride Methylimidazole ionic liquid solution, the concentration of 1-butyl-3-methylimidazolium chloride ionic liquid is 1.0mol / L, the ultrasonic power is 1000w, the ultrasonic time is 0.5h, filter to obtain the extract, and then add 16L anhydrous Ethanol, precipitated and then filtered to obtain a filter cake. After the filter cake was dried for 18 hours, 21.85 g of larch arabinogalactan was obtained.

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PUM

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Abstract

The invention discloses a method for extracting larch arabinogalactan. The method is characterized by comprising the following steps: crushing larch wood chips, and soaking with petroleum ether for degreasing; extracting arabinogalactan from the degreased larch wood powder with a chlorinated 1-butyl-3-methylimidazole ionic liquid solution to obtain extract; adding the extract into an ethanol solution to obtain a precipitate; filtering the precipitate; and drying the filter cake to obtain the larch arabinogalactan, wherein the ionic liquid is used for extracting the larch arabinogalactan and has the characteristics of stable property, no volatilization or burning explosion and the like. The technology has the advantages of little loss, low energy consumption, simplicity and convenience in operation, easiness in industrialization and the like; the arabinogalactan filter cake is obtained from the extract by an ethanol precipitation method; the recycled ethanol can be used again, and thus the production cost is reduced; and a new idea is provided for efficient and green large-scale production of arabinogalactan and comprehensive utilization of larch resources.

Description

technical field [0001] The invention relates to the field of natural product chemistry, in particular to a method for extracting larch polyarabinogalactan. Background technique [0002] Arabinogalactan is a well-known soluble and non-viscous dietary fiber. Because of its non-viscosity, it is currently used in the food and beverage industry and widely accepted by consumers. According to reports, arabinogalactan has a variety of pharmacological activities, and arabinogalactan can significantly improve the body's immunity, anti-tumor, anti-mutation, lower blood fat, anti-virus, and enhance monocytes and macrophages in immune antigens. , T cells and natural killer cells immune reactivity, so the extraction of arabinogalactan has attracted more and more people's attention. [0003] Larch [Larix gmelinii (Rupr.) Kuzen.] is a deciduous tree belonging to the genus Larix of the Pinaceae family. It is the main forest tree species in the forest regions of Northeast my country and Inne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
Inventor 杨磊祖元刚刘再枝侯可心李欣燃陈凤丽李丽丽李双阳
Owner NORTHEAST FORESTRY UNIVERSITY
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