Product Description
The stevia extraction machine can be achieved through a variety of techniques, dependent on the specific ingredient to be extracted. Subcritical water extraction is a recently developed technique that harnesses the unique properties of water in a subcritical state to extract active ingredients from natural products. Subcritical water, also known as superheated water, high-pressure hot water or hot liquid water, is defined as water heated to a temperature above 100°C but below the critical temperature of 374°C under a certain pressure, whereby the body of water remains in a liquid state. In the subcritical state, the microstructure of water (e.g. hydrogen bonding, ionic hydration, ionic aggregation, cluster structure, etc.) undergoes a transformation, resulting in a notable shift in its physical and chemical properties compared to water at room temperature and pressure. As the temperature rises, the hydrogen bonding of subcritical water becomes more open or weakened, thereby facilitating the extraction of active ingredients in stevia.
The stevia extraction machine utilise water extraction to dissolve the sweet components in the stevia plant, employing either hot water or steam. Some more sophisticated extractors may employ ultrasonic-assisted extraction, microwave-assisted extraction, or supercritical fluid extraction techniques to enhance the efficiency and purity of the extraction process.
Main components
Main Components of stevia extraction machine
Extraction Tank
This is the starting point of the extraction process and is used to load the stevia plant material and water to provide the base environment for the subsequent extraction.
Filtration system
After the extraction is completed, this system is responsible for removing solid residues from the extract to ensure the purity of the extract.
Evaporator
Reduces the water in the extract by concentrating it, thereby increasing the concentration of stevioside.
Drying system
Further dry the concentrated extract into powder form for subsequent storage and use.
Control system
This part controls the extractor. It monitors and controls the temperature, pressure, time and other key parameters during the whole extraction process.
Operation process
The stevia extraction machine has a straightforward and transparent operation process, comprising the following steps:
Firstly,the stevia plant material should be loaded into the extraction tank.
Secondly,the appropriate amount of water should then be added, and the temperature and time of extraction should be adjusted according to the specific requirements of the situation.
Thirdly,once the extraction process is complete, the filtration system should be used to remove any solid residue.
Fourthly,the extract was then transferred to the evaporator for concentration.
Finally,the concentrate is then converted into a powdered product by a drying system.
Our Advantages
1. High-efficiency extraction: the stevia extractor is designed to optimise the extraction of active ingredients in stevia, ensuring the quality and purity of the product.
2. User-friendly operation: The equipment is designed with a high degree of automation, which greatly reduces the tediousness and potential for error associated with manual operation.
3. Flexible adjustment: users can modify the extraction conditions according to their specific requirements, allowing them to obtain stevia extracts of varying purity and concentration.
4. Environmentally friendly: The main solvent used throughout the extraction process is water, which has a minimal environmental impact and aligns with the principles of green production.
Application
Stevia extract, a valuable natural product, has been widely adopted in the food and beverage industry due to its distinctive natural sweetness and low-calorie profile. Stevia extract is a versatile ingredient that can be used to effectively replace traditional high-sugar ingredients in a wide range of food products, imparting a natural sweetness while significantly reducing the calorie content. This makes it an ideal choice for modern consumers seeking healthier alternatives. From sweet candies and pastries to refreshing beverages and yoghurt, stevia extract has gained widespread acceptance in the market for its exceptional performance.
Furthermore, stevia extract has also proven effective as a low-calorie sweetening agent in the pharmaceutical and nutraceutical industries. In the preparation of pharmaceuticals, stevia extract not only enhances the taste of the drug and increases patient acceptance, but also avoids the extra calorie burden that may be brought about by the addition of sugar. This is an extremely beneficial option for specific groups of people, such as diabetic patients, who need to strictly control their sugar intake. In the R&D and production of healthcare products, stevia extract is the preferred sweetener for many consumers pursuing a healthy lifestyle. Its natural sweetness and health attributes allow consumers to enjoy delicious and healthy healthcare products with ease.
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