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Method for extracting phytosterol from bamboo or timber

A technology of phytosterols and wood, applied in the direction of preparation of steroids, chemical instruments and methods, steroids, etc., can solve the problems of low solubility of phytostanols, achieve increased added value, wide application prospects, and ease the pain of medicinal plants Insufficient effect of sterol resources

Active Publication Date: 2008-08-06
张家界仙踪林药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of phytostanols is even lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The method for extracting phytosterols from bamboo or wood, the preparation steps comprising:

[0023] (1), using ethyl acetate solvent (purity ≥ 90%) to extract the extract from the bamboo slices of bamboo, then evaporate and recover the ethyl acetate solvent at a temperature of 5°C and 0.99MPa vacuum to obtain the extract;

[0024] (2), put the extract into a pyrolysis furnace, fill it with nitrogen inert gas, then rapidly heat up to 800°C, and carry out directional pyrolysis under the action of 5% (mass ratio) catalyst copper in an added amount, and the pyrolysis steam After cooling, pyrolysis products are obtained;

[0025] (3) At a temperature of 100° C. and a vacuum of 0.1 MPa, the low-boiling substances in the pyrolysis product are removed, and then at a temperature of 150° C. and a vacuum of 0.99 MPa, phytosterols are distilled off.

Embodiment 2

[0027] The method for extracting phytosterols from bamboo or wood, the preparation steps comprising:

[0028] (1), using acetic acid solvent (purity ≥ 90%) to extract the extract from bamboo wood shavings, then evaporate and recover the acetic acid solvent at a temperature of 50°C and 0 MPa vacuum to obtain the extract;

[0029] (2), put the extract into a thermal cracking furnace, fill it with helium inert gas, then rapidly raise the temperature to 500°C, and carry out directional thermal cracking under the action of catalyst silver in an amount of 3% (mass ratio), thermal cracking After the steam is cooled, pyrolysis products are obtained;

[0030] (3) At a temperature of 50° C. and a vacuum of 0 MPa, the low-boiling substances in the pyrolysis product are removed, and then at a temperature of 200° C. and a vacuum of 0 MPa, phytosterols are distilled off.

Embodiment 3

[0032] The method for extracting phytosterols from bamboo or wood, the preparation steps comprising:

[0033] (1), using ethanol or acetone solvent (purity ≥ 90%) to extract the extract from bamboo fibers or scraps, then evaporate and recover the solvent at a temperature of 100°C and a vacuum of 0.8MPa to obtain the extract;

[0034] (2), put the extract into a thermal cracking furnace, fill it with carbon dioxide inert gas, then rapidly raise the temperature to 300 ° C, and carry out orientation under the action of an additive amount of 4% (mass ratio) catalyst copper and silver in any ratio mixture Pyrolysis, after the pyrolysis gas is cooled, pyrolysis products are obtained;

[0035] (3) At a temperature of 150° C. and a vacuum of 0.05 MPa, the low-boiling substances in the pyrolysis product are removed, and then at a temperature of 200° C. and a vacuum of 0.8 MPa, phytosterols are distilled off.

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Abstract

The invention discloses a method for extracting phytosterin from bamboo or wood, which comprises (1) using solvent to obtain extract from bamboo or wood, evaporating at 5-100DEG C and 0-0.99MPa, recovering solvent and obtaining extract, (2) arranging the extract in a thermal cracking furnace, feeding inertia gas, increasing temperature to 300-800DEG C, processing directional thermal cracking in the presence of catalyst, cooling thermal cracking steam and obtaining thermal cracking product, (3) at 50-200DEG C and 0-0.1MPa vacuum degree, removing thermal cracking product from the material with low boiling point, and at 150-300DEG C and 0-0.99MPa vacuum degree, steaming out phytosterin. The invention can improve the added values of bamboo and wood, and release the lack of medicine phytosterin, with significant social, environment and economic benefits, while the invention has simple process, easy operation, better controllability, low cost, industrial production and wide application.

Description

technical field [0001] The invention relates to a method for extracting phytosterols from bamboo or wood. Background technique [0002] Plant sterols (phytosterols) widely exist in different plants and aquatic organisms, and more than 250 species have been isolated and identified so far. Among them, the most representative ones are sitosterol, stigmasterol, campesterol and 4-desmethyl sterol. The most important sterol compound in plant raw materials is sitosterol, followed by its 22-dehydro analog stigmasterol and campesterol. Some also have brassicasterol and avenasterol. [0003] The chemical structure of phytosterols is similar to that of cholesterol, differing only in the side chains. For example, sitosterol and stigmasterol have an ethyl group at C-24, while campesterol has a methyl group at the same position. As for their saturated form, phytostanols, the distribution in plants is quite limited. For example, 5-saturated phytostanols, sitostanols and campestanols a...

Claims

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Application Information

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IPC IPC(8): C07J75/00
Inventor 彭万喜吴义强宋烨
Owner 张家界仙踪林药业有限公司
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