Method for sub-critically extracting jasmine flower head fragrance essential oil
A technology of jasmine flower head and essential oil, which is applied in the directions of essential oil/spice, fat production, etc., can solve the problems of large residual amount and poor extraction effect, and achieves the effects of high extraction efficiency, freshness, and purity.
Inactive Publication Date: 2014-07-23
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology
[0005] In view of the deficiencies in the prior art, the present invention provides a method for subcritically extracting jasmine head essential oil, which helps to solve the existing problems of poor extraction effect and large residual amount of jasmine head essential oil
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[0041] Specific embodiment: jasmine 2250g is placed in the jasmine fragrance adsorption device with the thickness of every layer 5cm, certain temperature and humidity and pumping capacity are set, with 450g gac continuous adsorption 22h, gac weight reaches 565g. Take 308g of activated carbon particles that have absorbed the aroma of jasmine head fragrance and put them into subcritical fluid to extract and recover the essential oil. Using dimethyl ether as the extraction agent, the ratio of solid to liquid is 1:3, the extraction temperature is 40°C, and the extraction pressure is 0.85MPa. The time is 45min, and the extraction is continuous twice, and the jasmine head essential oil is 57g, the yield is 4.6%, and the extraction rate is 90.9%.
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Abstract
The invention relates to a method for sub-critically extracting jasmine flower head fragrance essential oil, and the method is characterized by comprising the following steps: uniformly mixing active carbon granules absorbing jasmine flower head fragrance; putting processed active carbon into an extraction kettle; pressing a solvent in the extraction kettle into a separation tank to evaporate, vacuumizing till the pressure of the separation tank is decreased to negative pressure, and separating an extraction agent from jasmine flower fragrance components, thereby obtaining a fragrance extract; neutralizing solvent gas evaporated from an extraction solution in jasmine flower head fragrance absorption materials, liquifying after compressing and condensing, and flowing the liquid solvent in a solvent tank to be recycled. According to the invention, solvent residue does not exist; furthermore, the solvent can be recycled; the consumption of the extraction agent is reduced; the extraction yield can be above 90%; the purity is high; by means of gasification and liquidation of the solvent, heat exchange is carried out; the energy consumption is low; the extraction efficiency is high; the extraction time is greatly shortened by 2-5 hours; essential oil is extracted at normal temperature and under low-medium voltage; in addition, the manufacture cost of equipment is lower; the method disclosed by the invention is convenient for industrial production and has good market prospection.
Description
technical field [0001] The invention relates to a method for subcritically extracting jasmine head essential oil, which is not only suitable for the extraction production line of jasmine essential oil, but also can be used for extracting plant pigments, functional components and the like. Background technique [0002] Jasmine essential oil is a secondary metabolite released during the blooming process of flowers. It is mainly a large number of esters and alcohols. It is called the "king of essential oils". Dry, dehydrated, oily and sensitive skin, dilutes scars, increases skin elasticity, etc. It has been widely used in scented tea processing, cosmetics, food, medical and other fields. [0003] At present, the planting area of jasmine in my country is about 8,000 hm 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 production of scented t...
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IPC IPC(8): C11B9/02
Inventor 叶秋萍金心怡魏诗琴王婷婷
Owner FUJIAN AGRI & FORESTRY UNIV
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