Subcritical Low-Temperature Extraction for Grape Seed Oil

Subcritical solvents are purified from liquefied petroleum gas, mainly composed of butane and propane, with boiling points below 0 ºC. The leaching process is carried out under a certain pressure (0 1 ~ 0. The low-temperature extraction of oil was achieved at 6MPa as a liquid and room temperature. The solvent in the extracted meal and crude oil is removed under low temperature and vacuum conditions, and the solvent is liquefied and reused. 
How to get hemp oil with subcritical extraction machine ?

The process principle of subcritical extraction: Under a certain pressure, a liquefied subcritical solvent is used to countercurrent extract the material. The solvent in the extraction liquid (liquid phase) undergoes an evaporation process to vaporize the solvent and separate the extracted target component, obtaining the product; The extracted material evaporates out the adsorbed solvent to obtain another product (solid phase). The vaporized solvent is liquefied and reused. The entire extraction process can be carried out at room temperature or lower, so it will not cause damage to the heat sensitive components in the material, which is the biggest advantage of subcritical extraction technology.
The definition of subcritical extraction solvent: The state in which a solvent exists as a liquid at a certain pressure within a temperature range above its boiling point but below the critical temperature. We define it as the subcritical state of the solvent. This is also the liquefied state of the gas. In this state, utilizing its similar physical properties, the solvent used for extracting biological components is a subcritical extraction solvent, and its extraction process is called subcritical extraction process.Subcritical low-temperature extraction technologyis a new oil production technology, with the outstanding advantage of low-temperature leaching. It extracts oil without damaging the activity of plant proteins in the oil, and removes solvents from the meal and oil at low temperatures to obtain high-quality meal and oil.

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