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Method for extracting mikania micrantha volatile oil

An extraction method, the technology of Mikania micrantha, which is applied in the direction of essential oils/fragrances, fat production, etc., can solve the problems of chemical composition decomposition of volatile oils, no public literature reports, high extraction temperature, etc., achieve uniform heating, avoid loss of active ingredients, and improve extraction rate high effect

Inactive Publication Date: 2014-12-10
NANJING ZELANG AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of the steam distillation method is that the extraction temperature is high and the time-consuming is long, and it is easy to decompose the chemical components in the volatile oil that are unstable to humidity and heat and easy to oxidize.
Through literature search, do not see the public literature report identical with the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Dry and crush Mikania micrantha in the shade, pass through a 40-mesh sieve, take 1kg of Mikania micrantha powder, add 50% ethanol three times its weight, and use ultrasonic-microwave to extract, control the ultrasonic wave to 400W normally, and microwave power to 500W to continuously extract for 1h, filter, and the filtrate Extracted twice with petroleum ether, combined the extracts, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to obtain 20.45 mL of Mikania micrantha volatile oil.

Embodiment 2

[0019] Dry and crush Mikania micrantha in the shade, pass through a 40-mesh sieve, take 1kg of Mikania micrantha powder, add 60% ethanol 6 times its weight, and use ultrasonic-microwave to extract, control ultrasonic 400W to normally open, microwave power 800W to continuously extract for 1.5h, filter, The filtrate was extracted three times with ether, the combined extracts were dried over anhydrous sodium sulfate, and concentrated under reduced pressure to obtain 23.22 mL of Mikania micrantha volatile oil.

Embodiment 3

[0021] Dry and crush Mikania micrantha in the shade, pass through a 40-mesh sieve, take 1kg of Mikania micrantha powder, add 55% ethanol 5 times its weight, and use ultrasonic-microwave to extract, control the ultrasonic wave to 400W normally on, and microwave power to 1000W for continuous extraction for 2h, filter, and the filtrate Extracted twice with petroleum ether, combined the extracts, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to obtain 21.71 mL of volatile oil of Mikania micrantha.

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Abstract

The invention relates to a method for extracting mikania micrantha volatile oil and particularly relates to a method for extracting mikania micrantha volatile oil through an ultrasonic-microwave synergy. The method comprises the following steps of drying mikania micrantha in the shade, pulverizing and sieving with a 40-mesh sieve to obtain mikania micrantha power, adding 50-60% ethanol with the amount which is 3-6 times of the weight of the mikania micrantha power, extracting by virtue of ultrasonic wave and microwave, controlling the 400W ultrasonic wave to be normally opened and the power of the ultrasonic wave to be 500-1000W, continuously extracting for 1-2 hours, filtering to obtain a filtrate, extracting the filtrate with an organic solvent for 1-3 times to obtain extracts, merging the extracts, drying with anhydrous sodium sulfate and carrying out reduced pressure concentration to obtain the mikania micrantha volatile oil. According to the method disclosed by the invention, the mikania micrantha volatile oil is synergistically extracted by virtue of the modern extraction technologies, namely, ultrasonic wave and microwave and the method has the advantages of simple process, energy conservation, high yield of the product and good quality.

Description

technical field [0001] The invention relates to a method for extracting the volatile oil of Mikania micrantha, in particular to a method for synergistically extracting the volatile oil of Mikania micrantha by ultrasonic and microwave, and belongs to the technical field of natural plant extraction products. Background technique [0002] The scientific name of Mikania micrantha is Eupatorium, which is a climbing vine of Compositae native to South America, and it is also the only climbing vine of Compositae. In recent years, with people's attention to the ecological environment and the understanding of the economic value of Mikania micrantha, relevant scholars have conducted a lot of research on the prevention and development of this vicious weed Mikania micrantha, which has effectively prevented its damage to the ecological environment. At the same time, It also enriches the theoretical basis for making full use of this resource. Studies have shown that Mikania micrantha has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 苏刘花杨存
Owner NANJING ZELANG AGRI DEV
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