Production method of high-fluidity crystal maltitol

By employing a coupled strategy of vacuum evaporation and segmented cooling, the crystallization process of maltitol is controlled, solving the problems of solvent residue and nucleation. This enables the production of highly fluid and high-yield crystalline maltitol, suitable for the food and pharmaceutical industries.

CN121609736APending Publication Date: 2026-03-06BAOLINGBAO BIOLOGY
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Patent Information

Application Number
CN202511918086.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-18
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

In existing maltitol crystallization processes, the organic solvent method has solvent residue and safety hazards, while the traditional aqueous phase method is prone to nucleation explosions, resulting in high fine powder content, poor flowability and low crystallization yield.

Method used

A coupled strategy of vacuum evaporation and segmented cooling is adopted. By maintaining supersaturation through vacuum evaporation and using a slow-then-fast cooling strategy in the cooling stage, crystallization kinetics are controlled, explosive nucleation is avoided, and crystallization yield and product flowability are improved.

Benefits of technology

A crystalline maltitol product with uniform particle size distribution, low fine powder content, good flowability, and high yield was obtained, solving the safety hazards and low production efficiency problems of traditional methods and meeting the needs of high-end applications.

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Abstract

The invention relates to the technical field of sugar alcohol crystallization, and discloses a high-fluidity crystal maltitol production method which comprises the following steps: pre-concentrating a maltitol solution; performing vacuum evaporation and concentration to a supersaturated state, adding a seed crystal, and maintaining evaporation and crystallization under the conditions of keeping vacuum and temperature; then transferring to a crystallizer, growing crystal at constant temperature, and then carrying out slow-to-fast stage cooling to finish cooling crystallization; and finally, centrifuging and drying to obtain a finished product. According to the invention, a vacuum evaporation and segmented cooling coupling crystallization technology is adopted, and explosive nucleation and fine powder generation are effectively inhibited by accurately controlling crystallization kinetics in an organic-solvent-free system. The obtained product is regular in crystal form, uniform in particle size distribution, small in repose angle, excellent in fluidity, high in crystallization yield and high in purity, and the technical problems that a traditional water phase crystallization product is prone to caking and poor in fluidity are solved.
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