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Dementholized peppermint oil purifying method

A technology of peppermint oil and a purification method, which is applied in the directions of essential oils/spice, fat generation, etc., can solve problems such as influence, cannot guarantee the purity of peppermint oil, etc., and achieves the effect of simple and safe operation.

Inactive Publication Date: 2018-11-13
ANHUI PROVINCE YIFAN SPICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention of patent No. CN107686774A proposes a method for extracting peppermint essential oil, which includes the following steps: drying mint leaves until the water content is below 5%, crushing to 80 mesh, adding 75% alcohol and shaking and extracting at 15°C for 180 Minutes, filter residue and extract, the extract is centrifuged at 240r / min, and the upper layer oil A is taken; this invention uses the method of extraction to extract peppermint essential oil, and the organic solvent residue cannot be avoided in the extraction process, so that the concentration of peppermint oil cannot be guaranteed. Purity will affect the oil quality, for this reason, we propose a method for the purification of peppermint oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First prepare the preparations: prepare 100g mint, 710ml distilled water, petroleum ether (30°C-60°C boiling range), zeolite, distillation flask, condenser tube, electric heating mantle, thermometer, Erlenmeyer flask, tail joint, T-shaped tube; then carry out Distillation: In the water vapor generating bottle, add about three-quarters of the water in the container. After checking that the whole device is airtight, unscrew the screw clamp of the T-shaped tube and heat it to boiling. When the branch pipe of the T-shaped pipe is flushed out, tighten the screw clamp immediately, and the water vapor will enter the distillation part, and the distillation will start. When the effluent has no obvious oil droplets and is clear and transparent, stop the distillation; final separation: multiple extractions with petroleum ether , to get the crude product, after CaCl 2 After drying, 1.62ml of peppermint oil was obtained by distillation at a controlled temperature, and the oil yield ...

Embodiment 2

[0023] First prepare the preparations: prepare 150g mint, 1050ml distilled water, petroleum ether (30°C-60°C boiling range), zeolite, distillation flask, condenser tube, electric heating mantle, thermometer, Erlenmeyer flask, tail joint, T-shaped tube; then carry out Distillation: In the water vapor generating bottle, add about three-quarters of the water in the container. After checking that the whole device is airtight, unscrew the screw clamp of the T-shaped tube and heat it to boiling. When the branch pipe of the T-shaped pipe is flushed out, tighten the screw clamp immediately, and the water vapor will enter the distillation part, and the distillation will start. When the effluent has no obvious oil droplets and is clear and transparent, stop the distillation; final separation: multiple extractions with petroleum ether , to get the crude product, after CaCl 2 After drying, 2.43ml of peppermint oil was obtained by distillation at a controlled temperature, and the oil yield...

Embodiment 3

[0025] First prepare the preparations: prepare 200g mint, 1400ml distilled water, petroleum ether (30°C-60°C boiling range), zeolite, distillation flask, condenser tube, electric heating mantle, thermometer, Erlenmeyer flask, tail joint, T-shaped tube; then carry out Distillation: In the water vapor generating bottle, add about three-quarters of the water in the container. After checking that the whole device is airtight, unscrew the screw clamp of the T-shaped tube and heat it to boiling. When the branch pipe of the T-shaped pipe is flushed out, tighten the screw clamp immediately, and the water vapor will enter the distillation part, and the distillation will start. When the effluent has no obvious oil droplets and is clear and transparent, stop the distillation; final separation: multiple extractions with petroleum ether , to get the crude product, after CaCl 2 After drying, 3.21ml of peppermint oil was obtained by distillation at a controlled temperature, and the oil yield...

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Abstract

The invention discloses a dementholized peppermint oil purifying method. The method comprises the following steps: preparing peppermint herb, distilled water, petroleum ether, zeolite, a distillationflask, a condensing tube, an electric jacket, a thermometer, a conical flask, a tail-connection tube and a T-shaped tube; distilling: adding water into a water vapor generating bottle in an amount ofabout three fourths of the volume of the bottle, unscrewing a helical clamp of the T-shaped tube after checking that the whole device is airtight, heating the water to a boiling state, screwing the helical clamp immediately when a large amount of water vapor is generated and overflows from a branch tube of the T-shaped tube in order to allow the water vapor to flow into a distilling part, and starting distilling. By adopting the dementholized peppermint oil purifying method, the average oil extraction rate is up to 1.649 ml / 100 g, which is 91.61 percent or more of theoretical oil content of peppermint branches and leaves. Meanwhile, the water vapor is used for distilling, so that the defect of existence of organic solvent residue in a solvent extraction process is overcome, and the problemof influence on oil quality due to incapability of ensuring the purity of the dementholized peppermint oil since the organic solvent residue is inevitable in the extraction process of the peppermintessential oil with an extraction method in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of peppermint oil purification, in particular to a method for purifying peppermint oil. Background technique [0002] Mint, the native name is "Yindancao", which is a plant of the Labiatae family, that is, it belongs to other dry whole plants. It mostly grows beside rivers in mountain wetlands, and its rhizomes grow horizontally underground. It mostly grows at an altitude of 2100 meters, but it can also grow at an altitude of 3500 meters. It is an aromatic crop with special economic value. The whole plant is green and fragrant. The leaves are opposite, the flowers are small lavender, lip-shaped, and the small dark purple-brown fruits are formed after the flowers. Peppermint is one of the commonly used traditional Chinese medicines in China. It is a pungent and cool antipyretic medicine for sweating and treating influenza, headache, red eyes, body heat, sore throat and gums. External application can cure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/02C11B9/025C11B9/027
Inventor 祝莉周彬刘春宇
Owner ANHUI PROVINCE YIFAN SPICE