Extraction method of citrus aurantium flower essential oil

An extraction method, the technology of toi toi flower, applied in the direction of essential oil/fragrance, fat production, etc., can solve the problems of difficulty in retaining aromatic components, low quality of essential oil, low extraction rate of essential oil, etc., to achieve rich aroma composition and good quality of essential oil , High extraction efficiency

Active Publication Date: 2018-12-07
HUNAN AGRI PRODS PROCESSING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, steam distillation is the main method for extracting toi dai flower essential oil, but steam distillation will cause thermal decomposition and hydrolysis of the thermally unstable or easily oxidized components in the essential oil under high temperature conditions, resulting in a cooking smell, resulting in low quality of essential oil ; At the same time, the extraction process requires a large amount of water, which takes a long time and consumes a lot of energy
In addition, the use of a single extraction process will lead to a low extraction rate of essential oils, and at the same time it is difficult to retain all the aromatic components in the flowers, and some components are left in the toi dai flower hydrosol

Method used

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  • Extraction method of citrus aurantium flower essential oil
  • Extraction method of citrus aurantium flower essential oil

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for extracting hawksbill flower essential oil of the present invention includes the following steps:

[0026] (1) After picking the fresh hawksbill tortoise flower, remove the pedicel and sundries and quickly freeze and store it at a temperature of -25°C.

[0027] (2) The raw material obtained in step (1) was thawed at 20°C for 45 minutes, and then added to a microwave extractor for solvent-free microwave extraction. The extraction time was 45 minutes and the extraction power was 300 W to obtain a microwave extract.

[0028] (3) The microwave extract of step (2) is placed in an oil-water separator at 4° C. to stand for layering, and the oil layer and the water layer are separated to obtain the hawksbill flower primary oil and the hawksbill flower pure dew.

[0029] (4) Add the tortoise flower pure dew of step (3) to molecular distillation equipment for separation and purification, the distillation temperature is 75° C., the distillation pressure is 50 Pa, and the film s...

Embodiment 2

[0036] A method for extracting hawksbill flower essential oil of the present invention includes the following steps:

[0037] (1) After picking the fresh hawksbill flowers, remove the pedicels and sundries and quickly freeze them at a temperature of -20°C.

[0038] (2) The raw material obtained in step (1) was thawed at 25°C for 20 minutes, and then added to a microwave extractor for solvent-free microwave extraction with an extraction time of 30 minutes and an extraction power of 450 W to obtain a microwave extract.

[0039] (3) The microwave extract of step (2) is placed in an oil-water separator at 4° C. to stand for layering, and the oil layer and the water layer are separated to obtain the hawksbill flower primary oil and the hawksbill flower pure dew.

[0040] (4) Add the tortoise flower pure dew of step (3) into molecular distillation equipment for separation and purification, the distillation temperature is 55° C., the distillation pressure is 200 Pa, and the film scraping spee...

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Abstract

The invention discloses an extraction method a citrus aurantium flower essential oil. The method includes the following steps: (1) pretreating fresh citrus aurantium flowers, and carrying out solvent-free microwave extraction on the flowers to obtain a microware extract; (2) allowing the microwave extract to stand at 3-8 DEG C for layer separation, an oil layer being citrus aurantium flower initial essential oil and a water layer is citrus aurantium flower hydrolat; (3) separating and purifying the citrus aurantium flower hydrolat by using a molecular distillation method to obtain a light component which is citrus aurantium flower hydrolat recovery essential oil; and (4) blending the citrus aurantium flower initial essential oil and the citrus aurantium flower hydrolat recovery essential oil in proportion to obtain the citrus aurantium flower essential oil. The extraction method adopts the solvent-free microwave extraction technology, and so the influence of an organic solvent on the aroma and quality of the essential oil is effectively avoided, the essential oil is high in extraction rate and purity, the process is simple, and the extraction cost is low. The molecular distillationtechnology is used to recover aromatic components in the citrus aurantium flower hydrolat, which is environment-friendly and reduces the waste of resources. The aroma of the blended essential oil isclose to that of natural citrus aurantium flowers, with is fragrant in smell without a foreign flavor.

Description

Technical field [0001] The invention belongs to the field of plant essential oil extraction, and particularly relates to a method for extracting hawksbill flower essential oil. Background technique [0002] Hawksbill flower is the flower bud of the Rutaceae plant hawksbill, also known as Fructus Aurantii, Lime flower, etc. It is mainly distributed in the south of the Yangtze River in my country. It is one of the medicinal and food homologous varieties announced by the National Health and Family Planning Commission. Hawksbill flower is rich in volatile oil and has an elegant fragrance. It has the functions of digesting food, soothing liver, resolving phlegm, regulating stomach, and regulating qi. It is widely used in food and daily necessities, and is the top spice in cosmetics. [0003] Hawksbills have a short flowering period, delicate flowers, and easy loss of aroma. At present, the extraction of hawksbill flower essential oil mainly uses steam distillation, but steam distillati...

Claims

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Application Information

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IPC IPC(8): C11B9/02
CPCC11B9/022C11B9/027
Inventor 单杨郭佳婧梁曾恩妮李高阳付复华肖业成
Owner HUNAN AGRI PRODS PROCESSING INST
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