Peppermint Oil Subcritical Water Extraction System

Peppermint Oil Subcritical Water Extraction System -In the field of extracting effective ingredients from natural products, how to achieve efficient separation without damaging the active substances has always been a core issue of concern for researchers. Subcritical extraction technology, as a green extraction method, is becoming one of the research methods in universities and research institutions due to its low temperature, low pressure, and high efficiency characteristics. The key carrier for implementing this technology, subcritical extraction laboratory equipment, has formed a series of products after years of development, providing support for scientific research in the fields of deep processing of agricultural and forestry products and extraction of effective ingredients from natural products.

Technical principles and equipment composition
Subcritical extraction technology utilizes the characteristic of certain compounds existing in fluid form at temperatures above their boiling point but below the critical temperature and pressures below the critical pressure, to achieve the extraction and separation of target components through molecular diffusion processes. When solvents such as propane, butane, and dimethyl ether are in a subcritical state, the diffusion performance of molecules is enhanced, the mass transfer rate is accelerated, and the permeability and solubility of weakly polar and non-polar substances in natural products are improved.

A set of subcritical extraction laboratory equipment usually consists of multiple functional units, including extraction section, separation section, solvent recovery section, ultrasound assisted or microwave-assisted section, solvent metering section, solvent circulation section, hot water circulation section, solvent deodorization section, PLC control section, solvent discharge automatic disposal section, etc. These units work together to form a closed, oxygen free, low-pressure extraction system, ensuring that the entire process operates under mild conditions.

The advantages of subcritical extraction:
1. Low temperature processing: The entire process is low-temperature, which can greatly retain thermosensitive nutrients (such as vitamin E, plant sterols, unsaturated fatty acids, natural pigments, etc.), and the product quality is high, close to "cold pressing".
2. High efficiency and low residual oil: Due to the strong permeability of the solvent, the oil in the raw material can be "completely squeezed out", and the residual oil rate is much lower than traditional pressing methods.
3. No solvent residue: The solvent has a low boiling point, is easy to evaporate and separate, and there is almost no solvent residue in the product, which meets the requirements of green and safety.
4. Energy saving and environmental protection: The solvent can be recycled, with relatively low energy consumption, and the production process is carried out in a closed system, which is environmentally friendly.
5. Wide application: it is not only used to extract oil, but also widely used to extract natural pigments (such as capsanthin, lutein in marigold), essence, spices, effective ingredients of traditional Chinese medicine, etc.

Application field
The application areas of subcritical extraction laboratory equipment cover multiple fields, such as deep processing of agricultural and forestry products and their separation products, and extraction of effective ingredients from natural products. Specific applications include:
Plant oil extraction: The oil extraction of oil crops such as Camellia oleifera seeds, peony seeds, walnuts, wheat germ, etc. can effectively retain the active ingredients in the oil.
Extraction of volatile essential oils from plants: Essential oils from aromatic plants such as roses, agarwood, Sichuan peppercorns, ginger, etc. The product has a pure aroma and excellent quality.
Plant pigment extraction: The extraction of natural pigments such as marigold, lutein, and chili red pigment is widely used in industries such as food and cosmetics