Preparation method and device using microwave and gravity to extract natural plant essential oil and hydrolat
A technology for a natural plant essential oil and a preparation device, which is applied in the field of microwave gravity extraction of natural plant essential oil and hydrosol preparation, can solve the problems of large amount of solvent used, large solvent consumption, long heating time, etc. The effect of extraction time and fast reaction speed
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[0023] The preparation method of the microwave gravity extraction natural plant essential oil and hydrosol of the present invention includes the following steps:
[0024] In the first step, put the natural plant fresh raw materials to be extracted into the microwave reactor without adding any solvent or water, and then put the microwave reactor in the microwave generator;
[0025] The second step is to control the microwave power range to be 150~800W, and the action time range to be 10~120min for extraction;
[0026] In the third step, in the extraction process, the extracted natural plant essential oil and pure dew flow out from the microwave reactor under the action of gravity, flow into the connecting pipe through the screen tray, and collect the essential oil collection device connected to it by the condenser in;
[0027] In the fourth step, after the extraction is completed, the essential oil and hydrosol are separated through the piston valve, and the hydrosol is combined with t...
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[0030] Example 1:
[0031] Compared with the traditional method, the extraction time of lavender essential oil is reduced by 75% when the yield is the same, and the composition has no significant difference and no significant degradation reaction. Good evaluation.
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[0032] Example 2:
[0033] Compared with the traditional method, the extraction time of citrus essential oils is reduced by 92% when the yield is similar, and there is no significant difference in volatile components, and the sensory evaluation is better. Close to the plant's fragrance, it is no different from the essential oil obtained by cold pressing.
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