Eucalyptus oil Production Process

The raw materials for oil production mainly use the tender branches and leaves for thinning, renewal of the main cutting, and sprouting and fixed plants. A small amount of lemon eucalyptus and blue eucalyptus economic forests are harvested from artificial cultivation and specially used for steaming oil. Young branches and leaves are picked 2 to 3 times a year; Each hectare of thinning and sprouting fixed plant yields 2 to 3 tons of tender branches and leaves per hectare, and the main cutting renewal and special economic forest yields 8 to 15 tons per year. Preparation of eucalyptus oil by steam distillation. China used to use wooden pots for earthen stoves, which could only hold more than 100 kilograms of branches and leaves. Now the larger distillation device is a cylindrical steamer with a steel or brick structure, which can hold 2 to 5 tons of fresh leaves and twigs for steam distillation. Other countries also use a mobile distiller suitable for production in forest areas, or a fixed vertical continuous distiller. The crude eucalyptus oil directly distilled out is concentrated and refined to remove a small amount of water, low-boiling aldehydes, monoterpenoids, and high-boiling sesquiterpenes, so as to increase the relative content of eucalyptol, which can be used for medicine and export. Claim.

Eucalyptus oil Products and applications

Medicinal eucalyptus oil includes blue eucalyptus oil, eucalyptus oil, radiated eucalyptus oil, Leylin eucalyptus oil, etc., which have strong bactericidal and insect repellent effects. It is used as an anti-wind oil, cough medicine, anti-cold medicine, as well as a medicine for treating typhoid fever, diarrhea, hookworm disease and skin diseases; as a glue, paste and fur preservative. Perfume-type eucalyptus oil is mainly lemon eucalyptus oil, which is directly used as additives in toothpaste, soap, food, etc.; or separated from citronellal and then chemically reacted to produce hydroxycitronellal, thymol, citronellyl acetate and two Hydrocitronellol and so on. It is an important raw material for the preparation of cosmetics and other fragrances. Industrial eucalyptus oil, such as the essential oil of Eucalyptus radiata, can be used as metal flotation agent and additive in paint industry. Eucalyptus oil as automobile fuel is still in the research and test stage.

1. Antibacterial, anti-insect, anti-inflammatory, etc.

Ginoton capsules made of eucalyptus oil extract are produced by Baoshijia Pharmaceutical Factory in Germany. They can improve respiratory function, anti-parasites, promote skin absorption, expel wind and pain, relieve itching, relieve heat, burns, etc. It has a wide range of clinical applications.

2.Treatment of dysentery and inflammation

The main treatments and prescriptions are as follows:
1) Bacterial dysentery. Prescription: 65 g eucalyptus leaves, 45 g portulaca, 20 g pulsatilla, 12 g arborvitae, decoct 400 ml with water, and take it twice a day.
2) Enteritis and diarrhea. Recipe: 35 g eucalyptus leaves, 20 g kapok fried, add water and decoct to make 300 ml, and take it twice a day.
3) Cystitis. Recipe: 45 g of eucalyptus leaves, 30 g of grass roots, and 20 g of charcoal mothers. Add water to decoct 400 ml, and take it twice a day.
4) Air disinfection. Recipe: 65 g eucalyptus leaves, 45 g mugwort leaves, 30 g atractylodes, add 3 L of water, boil in an aluminum pot over high heat, then use a slow cook, airtight doors and windows, smoke for 2 hours, and eliminate pathogenic bacteria in the nasopharynx.
5) Chronic suppurative otitis media. Prescriptions: Rhubarb 8 g, Cork 6 g, Chuanhuanglian 8 g Angelica dahurica 6 g, Eucalyptus macrophylla leaves 6 g, Saxifraga 6 g, Strawberry 8 g, Saponaria 10 g, Borneol 2 g, Musk 2 g. Crush the flowers through a sieve and blow the powder into your ears 2 to 3 times a day.

3. Antihypertensive drugs

Felodipine and metoprolol tartrate are first-line drugs for the clinical treatment of hypertension. The combined use has synergistic and additive effects. It has been used for the treatment of cardiovascular diseases such as hypertension and stable angina pectoris for a long time, and its efficacy and safety are significantly better than single medication . In the preparation of its combined transdermal patch, the addition of eucalyptol is one of the important combination medications. Azone + eucalyptol + propylene glycol has a stable and long-lasting effect. A variety of multiple penetration enhancer systems suitable for the felodipine-metoprolol compound transdermal drug delivery system have been screened, which meets the strong and balanced transdermal penetration enhancement effect. Stable and long-lasting special requirements, the penetration rate of the two drugs is more than 4.8 times, and it is an ideal composite penetration enhancer for felodipine-metoprolol compound transdermal patch to play a long-term therapeutic effect.

4. Air disinfectant

It can avoid the harm to human health caused by formaldehyde and three-oxygen disinfection machine. The average natural bacteria extinction rate of disinfection is 93.41%, and the total number of bacteria after disinfection is 39.2 ±1.9cfu/m3, and the disinfection index meets national standards. The main function of eucalyptus fumigation is that eucalyptus oil is decomposed into small molecular particles, which will be killed by contact with dust adsorbed by microorganisms in the air during the volatilization process.

5. Perfume industry

The main variety currently used in the perfume industry is lemon press oil, which is rich in citronellal and can be used to perfume laundry soaps, detergents, cleaning agents and other daily chemicals. The amount of lemon used directly as a fragrance is not large. The main purpose is to separate the citronellal, and then synthesize more versatile fragrances, such as citronellol, citronellal, and menthol. Citronellol can also be separated from the lemon oil and used in the preparation of perfume, soap, paralytic powder, etc. Lemon iron peel oil, rich in citral, is mainly used for blending lemon flavor. The oil of fur is rich in geraniol acetate with rose aroma, and the residue of rectification contains a large amount of phyllol, which can be easily modified into vinegar of bergamot, which can be used as a substitute for bergamot oil.

6. Daily chemical industry

Because of the fresh smell and good sterilization effect of leaf oil, it is widely used in the daily chemical industry. It is often used to formulate perfume, detergent, skin cleansing agent, hair conditioner, toothpaste, air freshener, etc. With its insecticidal and insect repellent effect, it can be used to prepare insect repellents for poisoning and repelling bees, bees, various stored insects, and mosquitoes. The leaf oil also has good surface activity and is a natural detergent, which has a strong effect on removing dirt, grease, paint and unpleasant odors. Adding leaf oil to common detergents can make the washed wool products soft and fluffy. Australia has produced a series of products such as leaf oil for cleaning dirt or sterilization. Its main products are air cleaner or disinfectant, high-efficiency foam soap, medicated soap and other products.

7. Food Industry

Because of its refreshing fragrance, the oil from the leaves is non-toxic to humans and can be used as a food additive. According to the leaf oil, it can be used in the preparation of various food flavors in an appropriate amount according to the production needs. It is mainly used in chewing gum products to take advantage of the relieving effect of leaf oil on respiratory diseases. It is also often used in cough drops.

8. Other industries

The press leaf oil rich in piperonone and monophellandrene is not only used in spices and pharmaceutical additives, but also often used in industry as solvents, cleaning agents, mineral flotation agents and chemical raw materials. Leaf oil can also be used in the production of adhesives. Generally, in order to enhance the adhesive force, plasticizers, antifungal agents and other chemical synthetic additives are added to the adhesive, but these chemical synthetic additives are likely to cause Environmental contamination. Japan has developed a new type of environmentally friendly adhesive that uses plant essential oils such as leaf oil instead of chemical synthetic additives. It not only has excellent bonding performance, but also can effectively prevent mold. In addition, the leaf oil can be added as a combustion aid to gasoline-ethanol mixed fuel.