Enhancing Stevia Production Efficiency with Sunresin's Continuous Adsorption Technology
Background: The Growing Demand for Natural Sweeteners
As global consumers increasingly pursue healthier, low-calorie diets, natural sweeteners have become a rapidly expanding market segment.
Among them, Steviol Glycosides, derived from Stevia rebaudiana (Bertoni), stand out for their high sweetness intensity (200–300 times that of sucrose), zero calories, and natural plant origin. These advantages have made stevia a preferred sugar substitute in the food, beverage, and nutrition industries worldwide.
China has become the leading global producer of stevia products. However, traditional manufacturing processes—extraction, flocculation, filtration, resin adsorption, concentration, and drying—often suffer from low production efficiency, high energy consumption, and limited resin utilization. These challenges have constrained the industry’s ability to scale sustainably.
Challenge: Improving Efficiency and Reducing Costs
The conventional fixed-bed adsorption systems used for stevia purification require multiple manual steps, periodic downtime, and complex switching operations.
Such batch processes lead to:
- Inefficient resin use, with only partial surface area participating in adsorption;
- Frequent interruptions during switching and regeneration;
- Higher energy and water consumption, increasing operational costs.
The industry needed a continuous, automated, and high-efficiency solution to maintain product consistency while lowering costs.
Sunresin’s Solution: Continuous Multi-Column Adsorption System
Leveraging its deep expertise in adsorption and separation technologies, Sunresin developed a continuous multi-column system integrated with a multi-channel switching valve, enabling automated and uninterrupted stevia extraction and purification.
This continuous adsorption technology combines specialized stevia adsorption resins with an intelligent fluid management system, optimizing every step—from adsorption and displacement to washing, elution, and regeneration.
Key Advantages:
1.High Efficiency and Stability
The continuous operation allows multiple columns to work simultaneously under automated control, maintaining consistent flow and steady-state conditions. Adsorption and elution occur in real time, ensuring higher productivity.
2.Increased Resin Utilization
With improved column flow dynamics, resin utilization increases by over 50%, and adsorption efficiency improves by more than 60% compared with traditional fixed-bed systems.
Lower Operational Costs
The simplified design minimizes downtime, reduces solvent and energy consumption, and cuts production costs by 30–50%.
3.Consistent Product Quality
Stable process conditions minimize fluctuations in purity, resulting in uniform stevia glycoside quality across production batches.
4.Fully Automated and Sustainable
The system’s full automation supports 24/7 continuous operation, ensuring stable output and eliminating manual switching errors. Its optimized process design also reduces waste generation and supports greener manufacturing practices.
Industrial Impact: Driving a Smarter, Greener Stevia Industry
This technology has been successfully tested and implemented in several leading stevia production facilities in China. The results show a remarkable increase in yield and consistency, proving that Sunresin’s adsorption-based continuous production system is both technically feasible and economically viable for large-scale operations.
Beyond stevia, this platform technology can be extended to other natural product extraction and purification processes, demonstrating Sunresin’s capability to innovate across diverse bioprocessing applications.
Customer Collaboration and Project Inquiries
Sunresin has established long-term partnerships with many well-known enterprises both in China and internationally, providing customized process solutions and engineering support for stevia and other natural product extraction projects.
If you’re interested in learning more about our successful case studies or would like to discuss how our technology can support your production, please contact us.
Our dedicated Stevia Process Engineers will be glad to share detailed project cases and technical insights tailored to your needs.
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