Method for extracting essential oil of taxus media

A technique of Taxus mandiensis and Taxus mandiensis, which is applied in the field of extracting the essential oil of Taxus mandiensis by steam distillation, can solve the problems such as no report of the essential oil of Taxus mandiensis, and is convenient for large-scale production, The effect of improving osmotic pressure and simple process

Inactive Publication Date: 2010-09-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the extraction of the essential oil of Taxus chinensis

Method used

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  • Method for extracting essential oil of taxus media
  • Method for extracting essential oil of taxus media
  • Method for extracting essential oil of taxus media

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Step 1: Raw material pretreatment: take 500 grams of fresh leaves of Taxus chinensis from which impurities have been removed, and pulverize them with a pulverizer to obtain raw material powder;

[0014] Step 2: Steam distillation: Stir the raw material powder and 15 grams of salt evenly, put it into a distillation bottle, and put it into steam distillation for 2.5 hours;

[0015] Step 3: oil-water separation: the collected oil-water mixture was centrifuged at a high speed of 20,000 rpm for 10 minutes in a centrifuge to obtain 2.3 grams of yew essential oil.

[0016] The obtained yew essential oil product is light yellow, transparent liquid at normal temperature, has a unique fragrance, and is volatile; the specific gravity, specific rotation and refractive index are 0.891g / ml, +100.06 and 1.476, respectively. figure 2 The GC-MS total ion chromatogram of the essential oil shows that the yew essential oil contains unsaturated compounds such as phenols, aldehydes, and lac...

Embodiment 2

[0018] Step 1: raw material pretreatment: take 2000 grams of fresh twigs and young leaves of Taxus chinensis from which impurities have been removed, and chop them into pieces of about 1.5 cm with a knife to obtain raw material pieces;

[0019] Step 2: Steam distillation: Stir the raw material fragments with 40 grams of salt evenly, put them into a distillation bottle, and pass through steam distillation for 3.0 hours;

[0020] Step 3: oil-water separation: the collected oil-water mixture was separated with a separatory funnel to obtain 5.7 grams of yew essential oil.

Embodiment 3

[0022] Step 1: Raw material pretreatment: take 200 kg of fresh twigs and young leaves of Taxus chinensis, and chop them into pieces of about 2 cm with a cutting machine to obtain raw material pieces;

[0023] Step 2: Steam distillation: put the raw material fragments and 5 kg of salt into the distillation pot, pass through the steam distillation treatment for 0.5 hours, then turn on the stirring paddle, steam treatment while stirring for 0.5 hours, then stop stirring and continue the steam treatment for 2.5 hours;

[0024] Step 3: oil-water separation: the collected oil-water mixture was left to separate with an oil-water separator to obtain 318 grams of yew essential oil.

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Abstract

The invention relates to a method for extracting essential oil of taxus media. The method comprises the following steps of: 1, preprocessing raw materials: removing impurity from tender leaves and / or branches of fresh taxus media and crushing the tender leaves and / or branches to obtain pieces or powder of the raw materials; 2, performing steam distillation: uniformly mixing the pieces or powder of the raw materials and common salt, and placing the mixture in a distiller for steam distillation; and 3, separating oil from water: performing high-speed centrifugal separation or standing separation on the collected oil-water mixture to obtain the essential oil of the taxus media. The method of the invention has the advantages of simple process, less equipment, low cost, no pollution, and special suitability for medium- and small-size enterprises.

Description

technical field [0001] The invention belongs to a method for extracting plant essential oil, in particular to a method for extracting yew essential oil by steam distillation. Background technique [0002] Essential oils, also known as volatile oils, are made from flowers, roots, leaves, stems, branches, wood, skins, fruits, seeds, and physiological or pathological secretions of plants, and are passed through water in the presence or absence of water. The general term for volatile oily substances with certain aroma or aroma characteristics extracted by steam distillation (dry distillation), solvent extraction, pressing, adsorption or absorption. Most of the plant essential oils have the effects of expectorant, cough, asthma, carminative, stomach invigorating, antipyretic, analgesic, antibacterial and anti-inflammatory. Aromatherapy is a therapy that uses essential oils extracted from aromatic plants to maintain health, beautify and regulate emotions by means of massage, inha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 潘利华罗建平
Owner HEFEI UNIV OF TECH
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