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Preparation method of jasmine flower essential oil crystal

A technology of jasmine essential oil and jasmine, which is applied in the direction of essential oil/perfume, fat production, etc., can solve the problems of high equipment manufacturing requirements, large equipment investment, high product cost, etc., and achieve quantitative fragrance distribution, low operating cost and long working life Effect

Inactive Publication Date: 2017-05-31
YUNNAN LORRAINE AROMATIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Supercritical CO 2 Due to the high pressure required in the extraction process, the fluid extraction method requires high equipment manufacturing requirements, relatively limited production capacity, large equipment investment, and high product costs. The essence extraction has not really achieved industrial production.

Method used

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  • Preparation method of jasmine flower essential oil crystal
  • Preparation method of jasmine flower essential oil crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1, pretreatment: freshly picked jasmine 250g is put into reactor (reactor is placed in 50 ℃ of water baths), then the β-glucosidase (1.5%) solution that the buffer solution of pH5.0 extracts is sprayed on above the flower;

[0033] 2. At a temperature of 25°C, use a new type of resin to absorb the volatile components in the above-mentioned pretreated fresh flowers for 4 hours;

[0034] 3. After absorbing and saturating the above-mentioned new resin, then elute with 2500mL petroleum ether solvent, and distill under reduced pressure;

[0035] 4. Crystallization: After distillation, 2.2g of crude essential oil is obtained, then add 60mL of n-hexane and 20mL of ethanol, cool to room temperature, and then stand at 1-3°C for crystallization, and filter to obtain 1.7g of jasmine essential oil crystals after 12 hours. The filtrate can be recovered Continue to take advantage. The purity of jasmine essential oil analyzed by gas chromatography is about 99%, its fragrance is simi...

Embodiment 2

[0037] 1. Pretreatment: 150g of freshly picked jasmine is put into a reactor (the reactor is placed in a 50°C water bath), and then the naringinase (1%) solution extracted with a buffer solution of pH5.0 is sprayed on the flower. above;

[0038] 2. At a temperature of 20°C, use a new type of resin to absorb the volatile components in the above pretreated fresh flowers for 3 hours;

[0039] 3. After absorbing and saturating the above-mentioned new resin, then elute with 1500mL petroleum ether solvent, and distill under reduced pressure;

[0040]4. After the distillation, 1.6g of crude essential oil was obtained, then 60mL of ethyl acetate and 20mL of ethanol were added, and then left to crystallize at 3-5°C. After 12 hours, it was filtered to obtain 1.2g of jasmine essential oil crystals, and the filtrate could be recycled for further use. The purity of jasmine essential oil analyzed by gas chromatography is about 99%, its fragrance is similar to that of jasmine head essential...

Embodiment 3

[0042] 1. Pretreatment: 200g of freshly picked jasmine is put into a reactor (the reactor is placed in a 50°C water bath), and then the naringinase (2%) solution extracted with a buffer solution of pH 4.5 is sprayed on the flower. above;

[0043] 2. At a temperature of 23°C, use a new type of resin to absorb the volatile components in the above pretreated fresh flowers for 4 hours;

[0044] 3. After absorbing and saturating the above-mentioned new resin, it is then eluted with 2000mL of n-hexane solvent and distilled under reduced pressure;

[0045] 4. Obtain 2.1g of crude essential oil after distillation, then add 60mL of petroleum ether and 30mL of ethanol, cool to room temperature, then stand at 3-5°C for crystallization, and filter to obtain 1.8g of jasmine essential oil crystals after 12 hours, the filtrate can be recovered and reused . The purity of jasmine essential oil analyzed by gas chromatography is about 99%, its fragrance is similar to that of jasmine head essen...

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Abstract

The invention discloses a preparation method of a jasmine flower essential oil crystal. The preparation method comprises the following steps: (1) pretreatment: treating fresh picked jasmine flowers by using a bioenzyme solution; (2) adsorption treatment: adsorbing the pretreated jasmine flowers by using resin at normal temperature; (3) elution treatment: eluting with an eluent after resin adsorption saturation, drying, removing water and performing reduced-pressure distillation to obtain jasmine flower essential oil, wherein the eluent is at least one of petroleum ether, normal hexane, ethanol and ethyl acetate; and (4) crystallization treatment: adding an organic solvent into the jasmine flower essential oil, standing and crystallizing at 3 to 5 DEG C and filtering to obtain the jasmine flower essential oil crystal, wherein the organic solvent is at least one of petroleum ether, normal hexane, ethyl acetate and ethanol. The essential oil crystal provided by the crystallization method is pure in color and convenient to transfer and transport; and recrystallization is conducted at low temperature, so that the yield is increased, impurities are reduced, the effectively components of the essential oil are improved, the quality is high, and the essential oil is not liable to deterioration.

Description

technical field [0001] The invention belongs to the technical field of plant essential oil extraction, in particular to a method for preparing jasmine essential oil crystals. Background technique [0002] Jasmine (Jasminum sambac (L.) Ait), Oleaceae, Frangipani is an erect or climbing shrub, up to 3 meters. Jasmine originated in China and northern India, and it was brought to Spain by the Moors (an Islamic people in northwestern Africa). The best jasmine essential oils are produced in France, Italy, Morocco, Egypt, China, Japan, and Turkey. At present, the planting area of ​​jasmine in China is about 8,000 ha 2 , with an annual output of about 90,000 tons of flowers, the main production areas are in Guangxi, Yunnan, Fujian, Sichuan and other places, mainly used for scenting scented tea. The flowering period is from May to August, and the fruiting period is from July to September. The flowers of jasmine are very fragrant. It is a famous scented tea raw material and an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 孟丽芬刘祥义叶志恒胡翔飞
Owner YUNNAN LORRAINE AROMATIC PROD CO LTD
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