APPLICATIONS
Supercritical CO2 extraction is a method used to extract compounds from materials using carbon dioxide in its supercritical state, where it acts as a solvent with both liquid and gas properties. Widely used in the food, pharmaceutical, and cosmetic industries, this process extracts essential oils, flavors, fragrances, and bioactive compounds. Carbon dioxide is pressurized and heated to its supercritical state to dissolve and extract desired compounds, and then depressurized to leave behind the extracts without solvent residue. Nitrogen is occasionally used to pressurize the system and maintain an inert environment. This method produces high-purity extracts without harmful solvents, making it ideal for clean, safe, and high-quality products.
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Supercritical CO₂ extraction is a method that uses carbon dioxide (CO₂) in its supercritical state to extract valuable compounds from various materials. In its supercritical state, CO₂ exhibits properties of both a gas and a liquid, making it an efficient solvent for extraction.
Benefits include high extraction efficiency, selective extraction capabilities, minimal solvent residue in the final product, environmentally friendly process, and the ability to preserve the integrity and quality of sensitive compounds.
Industries include pharmaceuticals, nutraceuticals, food and beverage, cosmetics, and essential oils. This method is used to extract compounds such as cannabinoids, flavors, fragrances, pigments, and bioactive ingredients.
The process involves heating CO₂ to a supercritical state (above 31.1°C and 7.38 MPa) and then passing it through the material to be extracted. The supercritical CO₂ dissolves the desired compounds, which are then separated and collected when the CO₂ is depressurized.
Supercritical CO₂ is non-toxic, non-flammable, and leaves no harmful residues, making it safer and more environmentally friendly than traditional solvents like hexane or ethanol. It also allows for precise control over extraction conditions, improving product quality.
Equipment includes a CO₂ supply system, supercritical fluid extractor, high-pressure pumps, heaters, separators, and collection vessels. Advanced systems may also include automated controls and monitoring devices for precise process management.
Applications include extracting flavors, fragrances, and colorants from natural sources, decaffeinating coffee and tea, and extracting essential oils and nutraceuticals. The process ensures high purity and quality of the extracted compounds.
Supercritical CO₂ extraction is environmentally friendly as it uses a natural, recyclable solvent (CO₂), reduces the need for harmful chemicals, and minimizes waste. This process also has a lower carbon footprint compared to traditional extraction methods.
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