mugwort leaf oil essential oil is a volatile aromatic substance extracted from the leaves and stems of Artemisia argyi using extrusion and solvent extraction methods. It is generally light yellow or green yellow in color. Natural mugwort leaves are extracted and refined, with a light yellow or green yellow appearance. They have good effects on warming meridians, promoting blood circulation, dispelling cold and relieving pain, improving local circulation, and increasing immunity.

In the existing technology, the extraction of mugwort leaf oil extraction essential oil usually does not distinguish between mugwort leaf leaves and stems, but mixes the stems and leaves together for extraction. The extraction methods of Artemisia argyi essential oil mainly include water distillation, solvent extraction, supercritical fluid extraction, direct steam distillation, and microwave-assisted extraction processes, which have been applied to the extraction research of Artemisia argyi essential oil.

The steam distillation method  mugwort leaf oil extraction essential oil is one of the important methods for separating and purifying organic compounds. It involves introducing water vapor into a mixture containing insoluble or slightly soluble organic compounds with certain volatility, and heating it to boiling, so that the organic compounds to be purified are distilled out together with the steam at a temperature below 100 ℃, thereby achieving the purpose of separation and purification.

The specific steps are as follows: (1) Extraction of essential oil from mugwort leaves. After cleaning the mugwort leaves, soak them in 10 times the amount of water for 30 minutes. During the soaking period, treat them with ultrasound every 5 minutes for 5 seconds, and then extract the essential oil using steam distillation; (2) Pre treatment of Artemisia scoparia stems: Wash and chop the Artemisia scoparia stems, freeze them in a -15 ° C cold storage for 30 minutes, and immediately immerse them in a 15% sodium hydroxide solution of O-HTC for 45 minutes. Then heat the solution to boiling, keep it warm for 60 seconds, filter it, and obtain a precipitate. Rinse the precipitate with clean water until the pH value is between 8.5-9.5, and fully hydrolyze it with a composite enzyme solution at 35-40 ° C for 200 minutes; (3) The essential oil extraction of Artemisia argyi stems involves mixing the precipitate with the complex enzyme solution and adding water to a flask. The essential oil can be extracted using steam distillation.

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