Supercritical extraction
Supercritical extraction is an efficient plant extraction method that uses supercritical fluid as the solvent, usually carbon dioxide (CO2) as the supercritical fluid. This method operates at specific temperatures and pressures and has the following characteristics:
Volatile Extraction: Supercritical extraction is ideal for extracting volatile compounds. Because supercritical fluids operate at relatively low temperatures, it prevents the loss of volatile components during the extraction process, ensuring the integrity and quality of these components.
Heat-sensitive ingredient protection: The low-temperature operation of this method makes it ideal for extracting heat-sensitive ingredients, such as active ingredients in pharmaceuticals Natural flavors in substances or foods. Compared with traditional high-temperature extraction methods, supercritical extraction does not damage the activity of these ingredients, ensuring product quality.
High Selectivity: The selectivity of supercritical fluids can be controlled by adjusting temperature and pressure. This enables selective extraction of different components, thereby obtaining the desired compound without interference from other components.
Wide applications in the food and pharmaceutical industries: Supercritical extraction is widely used in the fields of food additives and pharmaceutical preparation. In the food industry, it can be used to extract natural pigments, flavors and antioxidants, while in the pharmaceutical industry, it can be used to extract active ingredients in drugs to ensure high purity and high quality pharmaceutical preparation.
In short, supercritical extraction is an efficient, selective and mild plant extraction method, suitable for the extraction of volatile substances and heat-sensitive components, and is widely used Used in the food and pharmaceutical industries to help obtain high quality extracts.
The following are some products that use supercritical extraction:
Subcritical extraction
Subcritical extraction is a plant extraction method that uses subcritical fluids as solvents. Subcritical fluids have the characteristics of both liquid and gas at lower temperatures and pressures, which makes subcritical extraction have the following significant characteristics:
Extraction of fat-soluble components: Subcritical extraction is mainly used to extract fat-soluble components in plants, such as fats and oils. This includes the extraction of vegetable oils, vegetable fats, and other fat-soluble compounds.
Protection of heat-sensitive substances: Due to the low-temperature operating conditions of subcritical extraction, it is very suitable for extracting heat-sensitive components in plants . Compared with high-temperature extraction methods, subcritical extraction does not cause thermal damage to these ingredients, thus maintaining their activity and quality.
Lower operating costs: Subcritical extractions generally have lower operating costs compared to supercritical extractions. This means it is more economical and suitable for cost-sensitive applications.
The following are some products that may use subcritical extraction
Macroporous adsorption resin technology
Macroporous adsorption resin technology is an important physical method for processing plant extracts to achieve isolation, purification and concentration of specific components. The following is a detailed description of macroporous adsorption resin technology:
Selective adsorption: Macroporous adsorption resin has specific adsorption properties and can selectively adsorb specific compounds in plant extracts. Element. The principle of this selective adsorption is based on the chemical properties and pore structure of the resin, which allows it to distinguish and adsorb target components without adsorbing other irrelevant components.
Purity Improvement: A key application of macroporous adsorption resins is to improve product purity. By passing the plant extracts through a bed of resin, unwanted components are selectively adsorbed by the resin, increasing the purity of the product. This is very important in the food, pharmaceutical and cosmetic industries where high purity of ingredients is required for manufacturing the final product.
Concentration: Macroporous adsorption resins can also be used to concentrate plant extracts. By circulating the extract through the resin bed multiple times, the concentration of the desired component can be increased, thereby reducing solvent use and simplifying subsequent processing steps.
Suitable for post-processing: Macroporous adsorption resin technology is often used in the post-processing stage of plant extracts to further improve the quality of the extracts. This can include removing residual impurities, solvents or other unwanted ingredients to ensure the final product meets quality standards.
The following are some products using macroporous adsorption resin technology
Water extraction method (decocting method)
Water extraction, also known as decoction, is a traditional plant extraction method. Its characteristics include:
Natural solvent: Water is a natural solvent that is generally safe and environmentally friendly. Since water is non-toxic and harmless, it does not introduce harmful chemicals into the extracts, so it is widely used in the field of herbal preparations and Chinese herbal medicine.
Suitable for water-soluble substances: Water extraction method is suitable for extracting water-soluble components in plants, such as polysaccharides and phenolic compounds wait. These ingredients often have medicinal or health-care functions, so water extraction is very common in Chinese herbal medicine and herbal tea preparation.
Mild operating conditions: Compared to other extraction methods, water extraction is usually performed under milder operating conditions. Helps preserve the activity of heat-sensitive ingredients. This also makes the water extraction method particularly suitable for extracting temperature-sensitive bioactive substances.
The following are some products that may use the water extraction method
Alcohol extraction method (reflux extraction method)
Alcohol extraction method, also known as reflux extraction method, uses organic alcohols (such as ethanol) as the extraction solvent. Its characteristics include:
Suitable for fat-soluble components: Alcohol extraction method is mainly used for extractionFat-soluble components in plants, such as oils, flavors, etc. This makes it very useful in extracting vegetable oils, spices and natural flavors.
Efficient extraction: Due to the moderate polarity of organic alcohols, they can efficiently extract a variety of components with different polarities. Includes fat-soluble and water-soluble ingredients. This makes alcohol extraction very effective in extracting complex plant extracts with multiple components.
Temperature control: Alcohol extraction usually requires reflux equipment to control the temperature and circulate the extraction liquid to ensure the control and extraction process. efficiency.
Ultrasonic extraction
Ultrasonic extraction is a method that uses ultrasonic energy to accelerate the extraction process. Its characteristics include:
Fast extraction: The action of ultrasound can quickly extract ingredients in a short time. It accelerates the extraction process by introducing high-frequency vibrations to disrupt cell structures and promote the release and diffusion of substances.
Efficient Mixing: Ultrasonic waves are able to provide uniform mixing between substances, which increases extraction efficiency. This is important to effectively mix the extraction solvent with the plant material to increase extraction effectiveness.
Low temperature operation: Compared to traditional thermal extraction methods, ultrasonic extraction is usually performed at a lower temperature. This helps preserve the activity of heat-sensitive ingredients and therefore has advantages in retaining medicinal and nutritional ingredients.
The following are some products that use ultrasonic extraction
Microwave-assisted extraction
Microwave-assisted extraction is an efficient plant extraction method that uses microwave heating to promote the extraction process. It has the following characteristics:
Rapid heating: Microwave-assisted extraction uses microwaves to quickly heat extraction solvents and plant samples. Compared with traditional heating methods, microwaves can transfer energy more quickly, making the extraction process more efficient and faster.
Energy Efficient: Microwave heating generally saves more energy than traditional heating methods. This is because microwaves heat the target material when it absorbs the microwave energy, without wasting the heat. This makes microwave-assisted extraction energy-saving advantages in large-scale production.
Suitable for a variety of ingredients: Microwave-assisted extraction can be used to extract a variety of ingredients of different polarities. Microwaves are capable of heating a variety of compounds in solvents, including water-soluble and fat-soluble components, and are therefore suitable for extracting many different types of plant components.
Temperature control: Microwave-assisted extraction usually has better temperature control capabilities. Operators can precisely control microwave power and heating time to achieve the desired extraction temperature, helping to protect the activity of heat-sensitive ingredients.
Here are some products that may use microwave-assisted extraction:
Microwave-assisted extraction is an efficient, energy-saving, and suitable plant extraction method for a variety of ingredients. It is widely used in food, pharmaceuticals, cosmetics and other fields, speeding up the extraction process, improving extraction efficiency, and helping to retain the quality of target ingredients. This makes microwave-assisted extraction one of the important technologies in the modern plant extraction industry.
Some products in this article do not use only one extraction method. There are several combinations of extraction methods. A single method may not achieve the effect, depending on the specific situationAsk our experts
