Process for recovering rebaudioside b from stevia mother liquor sugar
By combining ultrafiltration and nanofiltration membrane filtration with ethanol pulping, the problem of recovering rebaudioside B from stevia mother liquor sugar was solved, achieving high-yield and high-purity separation of rebaudioside B and improving the economic benefits of enterprises.
CN117586325BActive Publication Date: 2026-06-02DONGTAI HAORUI BIOTECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGTAI HAORUI BIOTECHNOLOGY CO LTD
- Filing Date
- 2023-11-18
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing technologies for recovering rebaudioside B from stevia mother liquor suffer from low yield, low recovery rate, and insufficient purity, which negatively impacts the economic benefits of enterprises.
Method used
By combining ultrafiltration and nanofiltration membrane filtration with ethanol pulping, and by controlling the permeation pressure, temperature and pH value, rebaudioside B in the mother liquor sugar is separated and recovered. The separation is achieved by utilizing the transformation between molecular and ionic states under acid-base conditions.
Benefits of technology
It significantly improved the yield and purity of Lebodiin B, increasing the company's economic benefits, while the recycling of by-products enhanced the overall economic benefits.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117586325B_ABST
Abstract
The present application relates to the technical field of glycoside product, and particularly relates to a process method for recovering rebaudioside B in mother liquor sugar of stevia rebaudiana bertoni, (1) taking mother liquor sugar, dissolving in purified water, and adjusting pH for standby; (2) taking mother liquor sugar solution, filtering multiple times by using ultrafiltration membrane, and collecting final permeate; (3) taking final permeate, concentrating by using nanofiltration membrane, heating, adjusting pH, filtering, and respectively collecting first filter cake and first filtrate; (4) taking first filter cake, beating with ethanol, adjusting pH, filtering, collecting second filter cake and second filtrate, and drying second filter cake to obtain rebaudioside B product; (5) taking final retentate, concentrating and drying to obtain first byproduct; and taking first filtrate and second filtrate, concentrating and drying after being combined to obtain second byproduct. The process method can recover rebaudioside B in mother liquor sugar, greatly improves yield, recovery and purity, and can also obtain other products, thereby increasing economic benefits of enterprises.
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