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Collection Method of Volatile Compounds of Aromatic Plants
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A technology of aromatic plants and collection methods, which is applied in the field of collection of aromatic plant volatiles, can solve problems such as difficulty in industrialization, and achieve the effects of reducing pollution, reducing costs, and less equipment investment
Inactive Publication Date: 2016-03-30
ZHONGKAI UNIV OF AGRI & ENG
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CO 2 —SPE technology has many advantages, but it also has its limitations. For example, it is more suitable for the extraction of substances with lipophilicity and small relative molecular mass. For the extraction of substances with high polarity and large relative molecular mass, it is necessary to add entrainer It is carried out under high pressure, which brings certain difficulties to industrialization
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Embodiment 1
[0029] The collection box used in this embodiment adopts the collection box installed above.
[0030] The present embodiment provides a kind of collection method of jasmine plant volatile matter, comprises the steps:
[0031] (1) Adsorption of volatiles: Cultivate the jasmine plants with flowers in the collection box, and after the jasmine plants produce aromatic volatiles, start the vacuum pump to make the jasmine plant volatiles adsorb on the activated carbon adsorption layer in activated carbon;
[0032] (2) Reflux extraction: Take the activated carbon obtained in step (1), put it into a 250mL Erlenmeyer flask, add ether until the activated carbon is submerged, install a spherical condenser, and put it in a water bath at 40°C. When the ether boils, Heating to reflux for 3h, cooling and soaking for 2h;
[0033] (3) Filtration: filter the liquid obtained in step (2) to obtain a supernatant, and take ether to wash the filter residue twice, and incorporate each washing liquid...
Embodiment 2
[0043] The collection box used in this embodiment adopts the collection box installed above.
[0044] The present embodiment provides a kind of collection method of sweet-scented osmanthus plant volatile matter, comprises the steps:
[0045] (1) Adsorption of volatiles: Cultivate osmanthus plants with flowers in the collection box. After the plants of osmanthus plants produce aromatic volatiles, start the vacuum pump to pump air, so that the volatiles of osmanthus plants are adsorbed on the activated carbon adsorption layer in activated carbon;
[0046] (2) Reflux extraction: Take the activated carbon obtained in step (1), put it into a 250mL Erlenmeyer flask, add diethyl ether until the activated carbon is submerged, pass through a reflux bottle water bath connected with a spherical condenser tube, and put it in a 45°C water bath, When the ether boils, heat to reflux for 2 hours, cool and soak for 1 hour;
[0047] (3) Filtration: filter the liquid obtained in step (2) to ob...
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Abstract
The invention discloses an acquisition method of aromatic plant volatile matters, which comprises the following steps: putting aromatic plants in an acquisition device containing activated carbon, and extracting gas until the aromatic plant volatile matters are adsorbed to the activated carbon, adding the activated carbon into a low-boiling-point low-toxicity organic solvent, treating in a water bath, boiling in aether, heating under reflux, cooling, standing, filtering to obtain a supernate, washing the filter residue with aether, merging the washing liquid into the supernate, and heating the supernate through water bath rotary distillation to obtain the light-yellow oily essential oil. The plant essential oil obtained by the method has the advantages of high purity, no damage on plants, no chemical change and low cost, implements in-situ extraction of the plant aromatic oil, is continuous, efficient, in-situ, natural and low in carbon, has no chemical change, acquires fresh natural aroma (aromatic plant volatile matters), and has important meanings for effectively utilizing natural resources and protecting the environment.
Description
technical field [0001] The invention relates to the field of extracting plant components, in particular to a method for collecting aromatic plant volatiles. Background technique [0002] Plant essential oil is a volatile secondary metabolite with aromatic odor produced in plants. It is composed of simple compounds with small molecular weight and can be distilled with water vapor. It is a general term for volatile oily liquid substances with a certain odor. . [0003] At present, the extraction of plant essential oils usually involves picking the effective parts and then extracting them. The traditional atmospheric steam distillation and supercritical fluid extraction are widely used. [0004] The volatile oil obtained by the distillation method may decompose some components in the essential oil due to the high heating temperature. In addition to the components in the original plant, it may also include some volatile decomposition products produced during the distillation p...
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