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Method for extracting peony flower essential oil

A technology of peony essential oil and extraction method, which is applied in the direction of essential oil/fragrance, fat production, etc., can solve the problems of poor wall breaking effect and difficulty in obtaining extraction rate, so as to improve exudation efficiency, safe and controllable extraction process, The effect of less amount of extractant

Active Publication Date: 2022-04-08
HENAN BUSINESS SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain a higher extraction rate due to poor wall-breaking effect

Method used

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  • Method for extracting peony flower essential oil
  • Method for extracting peony flower essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: prepare the solid alkali of different proportioning

[0034] Get magnesium chloride, calcium chloride, add 10 times the water of calcium chloride weight, stir evenly, be mixed with aqueous solution; Add graphite powder (cross 100 mesh sieves) and stir evenly; Then add dropwise lye (mass fraction 10% while stirring) % NaOH solution) to adjust the pH value to 12 for precipitation, filter, and separate the precipitate; wash the precipitate with deionized water, dry it in the air, and then place it in a muffle furnace for calcination at 900° C. for 36 hours to obtain a solid base.

[0035] The consumption of magnesium chloride, calcium chloride, water, graphite powder is shown in Table 1.

[0036] Table 1 prepares the consumption of each component of solid alkali

[0037] Sample serial number Magnesium chloride (hexahydrate) calcium chloride graphite powder solid base 1 — 111g 444g Solid base 2 203g — 444g Solid base 3 203...

Embodiment 2

[0038] Embodiment 2: the influence of the solid alkali of different proportioning on the extraction rate of essential oil

[0039] Refer to the following steps to extract peony essential oil, set blank example and test example, compare the influence of different conditions such as not adding alkali (blank example), adding different solid alkalis (test example) prepared in Example 1 on the extraction rate of peony essential oil.

[0040] The extraction steps of the blank example are:

[0041] (1) Take 1 kg of peony petals, add 3 kg of water to mix, and beat to obtain a beating mixture; stand for 3 hours;

[0042](2) Transfer the beating mixture into the still, add 11kg of water, make the total weight of the slurry reach 15 times the weight of the peony petals, and carry out steam distillation: first stir the still to heat up to 60°C within 30 minutes, and keep it warm for 30 minutes; Continue stirring and heating for 20 minutes to raise the temperature to 80°C and keep it warm...

Embodiment 3

[0051] Embodiment 3: the impact of surfactants in different proportions on the extraction rate of essential oils

[0052] Refer to the following method to extract peony essential oil:

[0053] (1) Get the peony petals of 1kg, add 3kg active water and mix, beating, obtain beating mixture; Described active water is the aqueous solution of surfactant;

[0054] (2) Add 200 g of solid alkali 7 to the beating mixture, and add 3 kg of water, stir evenly and let stand for 3 hours to obtain a mixed slurry;

[0055] (3) transfer the mixed slurry obtained in step (2) into the distillation still, add 8kg of water again, make the total weight of the slurry reach 15 times the weight of the peony petals, and carry out steam distillation: first make the still within 30min Stir and heat up to 60°C, keep warm for 30min; continue stirring and heating for 20min to raise the temperature to 80°C, keep warm for 3h; then heat up for 10min until the liquid boils and start distillation, the distillati...

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Abstract

The invention belongs to the technical field of plant essential oil extraction, and particularly discloses an extraction method of peony flower essential oil. The peony flower petals are added into the aqueous solution compounded by the three surfactants for pulping, then the solid alkali is added and uniformly stirred to obtain the mixed slurry, the peony essential oil is extracted by adopting a mode of combining steam distillation with organic solvent extraction, the prepared peony flower essential oil is clear and transparent and pure in fragrance, and the extraction rate of the essential oil is up to 0.52%. According to the invention, the synergistic effect of the three surfactants and the solid alkali which is convenient for safe operation at room temperature are utilized to promote solubilization of the essential oil in the wall breaking process, enhance the emulsification process of the peony flower essential oil and greatly improve the content of the peony flower essential oil dispersed in the extraction agent; meanwhile, the use amount of each component is small, the cost is low, the operation is safe, and the method is expected to replace an extraction mode of adding a large amount of organic solvent to improve the yield of essential oil and reduce environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of plant essential oil extraction, and specifically discloses a method for extracting peony essential oil. Background technique [0002] Peony, with its luxuriant and elegant flowers, is known as the "chief among flowers" by Chinese people. However, it is generally believed that peony flowers are beautiful but not fragrant, so it is not regarded as an aromatic plant. However, although the aroma of peony is not outstanding, the whole plant can extract vegetable oil or essential oil. In fact, peony essential oil is a general term for a class of aromatic and volatile oily liquid substances extracted from the flowers, roots, stems and other parts of peony through distillation and extraction. Among them, the roots of peony can be processed into "paeonol", which is a precious Chinese herbal medicine; the unsaturated fatty acid content of peony seed oil is more than 90%, which is a potential health-care oil resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 张立攀王法云赵梦瑶王俊朋李冰罗蓓蓓张亚勋胡桂芳任钊孙茜茜郑纯宇刘红伟关世恒
Owner HENAN BUSINESS SCI RES INST
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