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Absorption or absorption (absorption). Simple recipes and tips
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way absorption the finest essential oils are extracted, intolerant of even that slight heating that is necessary during maceration. This method is based on the volatility of essential oils and on the ability of fats to absorb vapors of essential oils at ordinary temperatures. The so-called frame method or pneumatic air method is used.
According to the first method, fat (purified lard) is applied in a layer of about 3-5 mm thick on glass, 1 m long and 60 cm wide. Glass is inserted into frames and sprinkled with flowers. Frames are placed one above the other and left for 1-3 days. The wilted flowers are then replaced with new ones. Repeat this for a month until the lipstick acquires the scent of the desired intensity.
If it is necessary to impregnate with essential oil not fat, but some kind of oil, then not glass sheets are inserted into the frames, but metal sieves. A piece of cotton soaked in oil is placed on this sieve and covered with a layer of flowers. In this case, the so-called perfume or fragrant oil is obtained.
In general, this method is troublesome and time consuming. The air enclosed between the frames is almost motionless, and therefore the transfer of essential oil from flowers to fat, despite the close distance, is slow. In addition, the product is clogged with small flower particles, watery juice and other impurities. A cleaner product is obtained by the pneumatic method.
A number of glass plates are inserted into a hermetically sealed box, covered with lard, turned into thin threads by extrusion. This box is connected to a second box filled with fresh flowers and provided with holes at the bottom. The upper parts of the box are connected to a fan that draws air through both boxes and is driven by an electric motor or clockwork. The air, passing through the boxes, is first enriched with the aroma of flowers, and then gives it to fat.
Absorption is fast, requires little labor, flowers do not come into contact with fat at all, which absorbs only fragrant substances from the air.
This method can be carried out in a slightly modified form in the Pivert apparatus. This device has the form of a cabinet, divided into two compartments, which communicate only from below. Both compartments are fitted with glass or tinned copper plates. On these plates are placed alternately on some flowers, and fat on others.
With the help of bellows mounted on top of the cabinet, a light flow of air from one compartment to another and back is constantly maintained.
Author: Korolev V.A.
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