Rosemary leaves are rosemary leaves.With the aroma of tea, spicy taste, slightly bitter.A small amount of dry or fresh leaves is used for food seasoning.
Rosemary is a mild stimulant and is commonly used as a tonic and liniment in traditional medicine.Now it is also the ingredient of many kinds of cosmetics.
Native to the Mediterranean region, naturalized in temperate America and Europe.It is widely cultivated in gardens in warm areas of the United States and Britain.
Rosemary essential oil colorless to pale yellow volatile liquid.Rosemary essential oil is one of the oldest spices in Europe and the United States. It is widely used in perfumes (such as cologne), solutions, cosmetics, aftershave, soaps and air fresheners.It is also a good natural preservative.
Rosemary leaves can be extracted from rosemary essential oil in different ways:
1.Steam distillation
Steam distillation is a method to extract essential oil from raw materials by means of water vapor pressure.To remove impurities, remove the dried rosemary leaves, put them in a round bottom flask, add distilled water according to the feed liquid ratio, and use total water distillation. The distillation time is 2.5h.Direct crude oil was centrifuged at 3500r/min for 10min, then the top oil layer was added with an appropriate amount of anhydrous sodium sulfate to dehydrate.After extraction and separation with iso-volume petroleum ether for water extraction, dry with anhydrous sodium sulfate, recover petroleum ether and extract essential oil.Combined with direct essential oil and extracted essential oil, rosemary essential oil.Store in a brown bottle at 4 degrees Celsius.
2.Supercritical CO2 fluid extraction.
Principle: under high pressure and supercritical state, liquid CO2 is used as a solvent for extraction and then decompression and separation. With the pressure falling, liquid CO2 is continuously vaporized and the effective components of the extract can be separated
3.Organic solvent was used to extract it.
It is mainly to use low boiling point organic solvent such as ether, petroleum ether and other cold leaching extraction or continuous reflux extraction of effective components in traditional Chinese medicine, extract liquid, and then by distillation or decompression distillation removing solvent can get crude oil.However, organic solvents can also extract oil, wax and resin from plants, resulting in more impurities of essential oils, affecting the quality of essential oils.
Use of rosemary essential oil
- Apply 2 drops of rosemary essential oil to warm up your back muscles.
- Add 4 drops of rosemary essential oil to hot water for inhalation to relieve the discomfort in the nose of a cold
- When inflamed, use 4 drops of rosemary essential oil as a cold compress
function
1.Essential oil has a remarkable effect on the brain and central nervous system, as well as clearing away distractions and enlightening the intellect.It also has a good stimulation effect on the brain, which enhances memory.
2.It is helpful to treat headache, partial headache, neuralgia, mental fatigue and neurasthenia. The antiseptic and bactericidal efficacy of rosemary essential oil is especially suitable for intestinal infection, dysentery, relieving indigestion, flatulence of intestines and stomach, coordinating liver discomfort and jaundice, and reducing pain caused by arthritis, rheumatism and gout.
3.It also helps with arteriosclerosis, palpitations, poor circulation and varicose veins.
4.The benefits of rosemary’s diuretic properties help to reduce menstrual moisture, break down fat and reduce weight.
5.For the respiratory system, it is effective for asthma, bronchitis, mucositis, sinusitis and whooping cough.
6.Because of its astringency, it has a positive effect on flabby skin.Its stimulative effect is helpful for adjusting scalp dysfunction and promoting hair growth.