Different methods of extracting essential oils have been in use for several years. Other methods are still yet to be proven. You can get Oil extraction machinery to meet your needs. In this post, you will learn some important methods:
This is an ancient method that is used to extract essential oils. Nowadays, it is rarely used because of high costs. In this method, it involves placing flower petals on the glass that is spread with a layer of fat. The essential oil will then diffuse into fat. Then, oil is extracted from fat using alcohol.
This method is used to extract essential oils from the rind of fruits. This particular method is cold, and heat is not used. This method is quite popular with the extraction of essential oils from grapefruit, lemons, and oranges. Expressed oils are considered as therapeutic oils. The problem with this particular method is that you can get oils that are contaminated with pesticides that are sprayed on the crop.
This particular method has been in use for several years. In fact, it is still one of the most commonly used methods to extract essential oils. If your oil is not extracted using this particular method or cold expression, then technically, you do not have therapeutic essential oil. In this method, steam is used to penetrate oil membranes of a plant and then release essential oil.
This method is quite popular in the perfume industry. This particular method does not give out therapeutic grade oils since various chemicals such as acetone and hexane are used during the process. The types of oils produced are known as aromatherapy grade or perfume oils. This particular process needs minimal time, and since oil is cut with the solvent, the production volume is considerably increased. These oils are widely used as bath gels and oils, shampoos, toothpaste, candles, and air fresheners. These types of oils make up 98% of oils you will find on the market.
Carbon dioxide extraction
Carbon dioxide extraction or supercritical fluid extraction is a relatively new solvent extraction method. This given method uses carbon dioxide gas at high pressure. The gas is injected into a tank where plant materials are contained, and it can act as a solvent. The good thing about this method is that carbon dioxide is odorless and colorless and can easily be removed. However, the distilling equipment is quite expensive.