The application of ceramic membrane and nanofiltration technology in stevia production is in improving production efficiency, reducing production costs, improving product quality and reducing environmental pollution. Here is a summary of specific applications and advantages:
1. Reduce the use of chemical additives
In the traditional stevia production process, a large amount of lime and ferrous sulfate are usually used as flocculants for impurity removal and decolorization, which not only leads to low product purity, but also produces a large amount of solid waste, increasing the difficulty of post-processing. The introduction of ceramic membrane and nanofiltration membrane technology can significantly reduce the use of flocculants by about 75%, while reducing the cost of solid waste discharge and treatment, making the production process more environmentally friendly.
2. Improve product purity and yield
Ceramic membrane and nanofiltration membrane technology can effectively remove impurities and some pigments in stevia water extract through physical filtration, and improve the quality of the feed liquid. Experiments show that the purity of stevioside can be increased to 89.3% and the yield can reach 86.1% by using the flocculation and ceramic ultrafiltration membrane integrated process, which is significantly better than the traditional extraction process.
3. Reduce production costs
Full automation design: Ceramic membrane filtration is designed and made by PLC or DCS automatic control, which can help reduce labor costs with few operators.
Reduce energy consumption: Nanofiltration membrane technology uses room temperature concentration to avoid high temperature damage to stevia, while reducing energy consumption.
Ethanol recovery: Nanofiltration membrane can efficiently recover ethanol solvent, reduce the loss caused by ethanol heat recovery, and further reduce the operating costs of enterprises.
4. Extend product shelf life
Ceramic membrane has good sterilization and disinfection functions, which can effectively remove microorganisms and impurities in sugar solution, thereby extending the shelf life of stevia products.
5. Green and environmental protection
Reduce water consumption: The permeable water concentrated by nanofiltration membrane can be reused as extraction water, reducing water consumption in the processing process.
Reduce solid waste discharge: Compared with traditional processes, ceramic membrane technology reduces the amount of solid waste treatment and meets the requirements of green production.
6. Technical advantages
High temperature resistance and corrosion resistance: Ceramic membrane has excellent high temperature resistance and chemical corrosion resistance, and is suitable for long-term use for stevia processing.
Narrow pore size distribution: The ceramic membrane has a uniform pore size distribution, good separation performance, and can effectively remove impurities and pigments, which can help increase stevia quality and reduce post treatment.
Easy to clean and reuse: The ceramic membrane can be thoroughly cleaned by high-temperature steam or chemical cleaning agents to maintain long-term use efficiency.
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Typical Application For Stevia
>> Stevioside purification: The flocculation-ceramic ultrafiltration membrane coupling technology is used to significantly improve the purity and yield of stevioside, while reducing production costs.
>> Ethanol recovery: Nanofiltration membrane technology is widely used in ethanol recovery in stevioside production, reducing energy consumption and solvent loss.
The application of ceramic membrane and nanofiltration membrane technology in stevioside production not only improves the purity and yield of the product, but also reduces production costs and environmental pollution, which meets the requirements of modern food industry for green, efficient and safe. In the future, with the further development of membrane technology, its application prospects in the production of stevioside and other plant extracts will be broader.
Because of the ultra fine fitering accuracy down to nanometer size, ceramic membrane filtration technology is now playing more and more important role for extraction process of nature food ingredients. More details, please contact with TANGENT team.
