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Extraction method of grapefruit essential oil

A grapefruit essential oil and extraction method technology, applied in the field of grapefruit essential oil extraction, can solve the problems of changing the fragrance profile, loss of top fragrance, solvent pollution, etc., achieve the effect of improving quality and yield, and avoiding the loss of active ingredients

Inactive Publication Date: 2019-12-10
NANJING ZELANG AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water distillation and solvent extraction will inevitably cause changes in components, thereby changing the entire fragrance profile, and often lose top notes, the product loses its freshness, and pollution from solvent residues is inevitable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for extracting wormwood essential oil, comprising the following steps:

[0021] (1) Wash the fresh grapefruit peel stems and leaves and soak them in water for 25 minutes, then put them into a sieve basket and immerse them in liquid nitrogen for 50 minutes, then lift them up and place them at room temperature for 8 minutes, then submerge the sieve baskets as a whole Put in liquid nitrogen for 50 minutes, repeat this process 3 times;

[0022] (2) drying the grapefruit peel in step (1) at low temperature, crushing, and passing through a 20-mesh sieve to obtain grapefruit peel powder;

[0023] The low-temperature vacuum drying process is as follows: grapefruit peels are stacked alternately in a vacuum drying oven, the vacuum degree is controlled to 0.009Mpa, the temperature of vacuum drying is 40°C, and the grapefruit peels are dried until the water content is below 5%;

[0024] (3) Fully mix the wormwood powder with 0.05 times the weight of β-glucosidase and let ...

Embodiment 2

[0027] A method for extracting wormwood essential oil, comprising the following steps:

[0028] (1) Wash the fresh grapefruit peel stems and leaves and soak them in water for 20 minutes, then put them into a sieve basket and immerse them in liquid nitrogen for 30 minutes, then lift them up and place them at room temperature for 5 minutes, and then submerge the sieve baskets as a whole into liquid nitrogen for 30 minutes, and so repeated twice;

[0029] (2) drying the grapefruit peel in step (1) at low temperature, crushing, and passing through a 5-mesh sieve to obtain grapefruit peel powder;

[0030] The low-temperature vacuum drying process is as follows: grapefruit peels are stacked alternately in a vacuum drying oven, the vacuum degree is controlled to 0.009Mpa, the temperature of vacuum drying is 40°C, and the grapefruit peels are dried until the water content is below 5%;

[0031] (3) Mix wormwood powder with 0.01 times the weight of pectinase and let it stand for 30 min...

Embodiment 3

[0034] A method for extracting wormwood essential oil, comprising the following steps:

[0035] (1) Wash the fresh grapefruit peel stems and leaves and soak them in water for 30 minutes, then put them into a sieve basket and immerse them in liquid nitrogen for 60 minutes, then lift them up and place them at room temperature for 10 minutes, then submerge the sieve baskets as a whole Put in liquid nitrogen for 60 minutes, repeat this 3 times;

[0036] (2) drying the grapefruit peel in step (1) at low temperature, crushing, and passing through a 30-mesh sieve to obtain grapefruit peel powder;

[0037] The low-temperature vacuum drying process is as follows: grapefruit peels are stacked alternately in a vacuum drying oven, the vacuum degree is controlled to 0.009Mpa, the temperature of vacuum drying is 40°C, and the grapefruit peels are dried until the water content is below 5%;

[0038] (3) Fully mix the wormwood powder with 0.08 times the weight of cellulase and let it stand fo...

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PUM

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Abstract

The invention relates to a method for extracting essential oil from a natural plant grapefruit, which comprises the following steps: (1) cleaning fresh grapefruit peel, soaking the peel in water, putting the peel into a sieve basket, integrally soaking the peel in liquid nitrogen, and repeating the above process for 2-3 times; (2) drying the grapefruit peel treated in the step (1) at a low temperature, and crushing to obtain grapefruit peel powder; (3) extracting the grapefruit peel powder by adopting supercritical CO2 extraction method; and (4) enabling CO2 containing an extract to flow out of the extraction kettle and enter a separation kettle for reduced pressure separation to obtain the grapefruit essential oil. According to the extraction method of the grapefruit essential oil, provided by the invention, the loss of effective components in the grapefruit peel extraction process is avoided, and the quality and the yield of the grapefruit essential oil are improved.

Description

technical field [0001] The invention relates to a method for extracting natural plant essential oil, in particular to a method for extracting grapefruit essential oil. Background technique [0002] Grapefruit, also known as grapefruit, is a small tree of Rutaceae and Citrus, with slightly drooping branches and glabrous. The pulp is light yellowish white or pink, tender, juicy, refreshing, slightly fragrant and slightly sour. Grapefruit contains valuable natural vitamin P and rich vitamin V and soluble cellulose. Vitamin P can enhance the function of skin and pores, which is beneficial to skin health and beauty. Vitamin C can participate in the synthesis of human collagen, promote the production of antibodies, and enhance the detoxification function of the body. In addition, grapefruit can also help the body absorb calcium and iron, which are two important minerals necessary to maintain the normal metabolism of the human body. [0003] Grapefruit essential oil is extracte...

Claims

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Application Information

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IPC IPC(8): C11B9/02
CPCC11B9/022C11B9/025C11B9/027
Inventor 杨成东
Owner NANJING ZELANG AGRI DEV