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Extraction technology of plant essential oil, polysaccharide and flavone

A plant essential oil and extraction technology, which is applied in the extraction process of polysaccharides and flavonoids, and in the field of plant essential oils, can solve the problems of low raw material utilization, single product, high toxicity, etc., and achieve low pollution, easy recovery, and damaged product activity low effect

Inactive Publication Date: 2015-06-03
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, reports on the extraction of natural active substances have gradually increased, but many of them have shortcomings such as single product, high cost, low utilization rate of raw materials, and the use of highly toxic or flammable and explosive reagents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Wash the valerian root, dry it, crush it, pass through a 100-mesh sieve, and select 100 g of powder as raw material. Soak the raw material in 1.5 L of 50% ethanol aqueous solution (extraction solvent) for 12 h, put it into the extraction container, and add cellulase, under the conditions of cellulase concentration of 2.4 U / mL extraction solvent and extraction temperature of 55 °C , ultrasonic treatment (power: 200 W, frequency: 25 kHz) for 35 min, after extraction, filter, collect the filtrate and filter residue, and complete an extraction; add 1.5 L of 50% ethanol aqueous solution to the filter residue of the first extraction and soak for 60 min, repeat once Extraction and filtration operations during extraction, collect filtrate and filter residue, and complete the second extraction; add 1.5 L of 50% ethanol aqueous solution to the filter residue of the second extraction, repeat the operations of soaking, extraction and filtration in the second extraction, and comp...

Embodiment 2

[0038] The leaves of camphor tree were washed, dried, crushed, and passed through a 10-mesh sieve, and 100 g of powder was selected as the test material. Soak the raw material with 1.8 L of 50% ethanol aqueous solution (extraction solvent) for 15 h, put it into the extraction container, and add cellulase, under the conditions of cellulase concentration of 2.1 U / mL extraction solvent and extraction temperature of 50 °C , ultrasonic treatment (power: 200 W, frequency: 25 kHz) for 25 min, filter after extraction, collect the filtrate and filter residue, and complete an extraction; add 1.8 L of 50% ethanol aqueous solution to the filter residue of the first extraction and soak for 100 min, repeat once Extraction and filtration operations during extraction, collect filtrate and filter residue, and complete the second extraction; add 1.8 L of 50% ethanol aqueous solution to the filter residue of the second extraction, repeat the operations of soaking, extraction and filtration in the s...

Embodiment 3

[0040] Shatian pomelo peel was washed, dried, crushed and passed through a 50-mesh sieve, and 100 g of powder was selected as the test material. Soak the raw materials with 2.0 L of 45% ethanol aqueous solution (extraction solvent) for 10 h, put them into the extraction container, and add cellulase, under the conditions of cellulase concentration of 2.2 U / mL extraction solvent and extraction temperature of 50 °C , ultrasonic treatment (power: 200 W, frequency: 25 kHz) for 30 min, after extraction, filter, collect the filtrate and filter residue, and complete an extraction; add 2.0 L of 45% ethanol aqueous solution to the filter residue of the first extraction and soak for 30 min, repeat once Extraction and filtration operations during extraction, collect filtrate and filter residue, and complete the second extraction; add 2.0 L of 45% ethanol aqueous solution to the filter residue of the second extraction, repeat the soaking, extraction and filtration operations in the second e...

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Abstract

The invention discloses an extraction technology of plant essential oil, flavone and polysaccharide. The extraction technology comprises the steps of extracting the plant essential oil, the flavone and the polysaccharide for three times under ultrasonic assistance by taking an alcohol aqueous solution containing cellulase as an extraction solvent, merging extracts, carrying out centrifugal separation to form an essential oil crude product, a water phase and a flavone aglycone crude product after reduced pressure distillation to recover alcohol, Extracting flavone glycoside from the water phase by using n-butyl alcohol, dissolving flavone aglycone in an extraction phase containing flavone glycoside, carrying out the reduced pressure distillation to recover n-butyl alcohol, drying to form a flavone crude product, and carrying out alcohol precipitation, filtering and dryness on raffinate containing polysaccharide to form a polysaccharide crude product. The extraction technology makes full use of a plant raw material and has the advantages of simplicity, safety, high product yield, low damage probability of activity and the like.

Description

technical field [0001] The invention relates to the field of extraction of natural active substances, in particular to the extraction process of plant essential oils, polysaccharides and flavonoids. Background technique [0002] Plant essential oil is a kind of odorous volatile oily liquid substance, which can be obtained from plant flowers, leaves, branches, roots, bark, fruits, etc. It has antibacterial, anti-inflammatory, anti-tumor, anti-viral, antipyretic and analgesic, Phlegm and cough and other effects. The extraction methods of plant essential oils include steam distillation extraction, solvent extraction, molecular distillation extraction, pressing extraction, ultrasonic-assisted extraction, enzyme-assisted extraction, supercritical CO 2 extraction, microwave-assisted extraction, etc. Polysaccharide is one of the natural macromolecules in the body. It is formed by connecting multiple identical or different monosaccharides with glycosidic bonds. It widely exists in...

Claims

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Application Information

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IPC IPC(8): C11B9/02A61K36/185A61K36/54A61K36/752A61K36/8962C08B37/00
Inventor 黎继烈谷政伟胡铁方勤敏曾柏全王卫易笑生李振梅张梦君
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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