Controlled hydrothermal pre-treatment to slow psyllium gelation
A novel controlled hydrothermal pre-treatment method for psyllium powder that modifies arabinoxylan structure to delay gelation, improving product handling and consumer usability without additives.
Overview
The controlled hydrothermal pre-treatment is an innovative physical method applied to psyllium powder to slow down the gelation process. By adjusting moisture content and temperature, this method modifies the structure of arabinoxylan, a key component of psyllium, to control water penetration and chain entanglement. This results in delayed viscosity onset and softened gel strength, making psyllium products easier to handle and more user-friendly. The process is purely physical, involving no enzymes or additives, thus simplifying compliance with Good Manufacturing Practices (GMP).
Technical specifications
- Moisture Content: 20-35%
- Temperature Range: 90-120°C
- Non-gelatinizing Conditions: Ensures structural modification without complete degradation
- Monitoring: In-line monitoring for process intensity
- Compatibility: Fits existing extrusion or batch thermal lines
- Benefits: Reduces arabinoxylan molecular weight, slows re-hydration kinetics, and maintains functional fiber benefits
Technology readiness level
The current stage of development is at Technology Readiness Level 3. Lab-scale trials have been conducted, with future phases planned for mapping viscosity and gel-strength delay, confirming debranching mechanisms, and ensuring scalability through pilot-scale trials.
About University of Maine
The University of Maine is a comprehensive public research university and the state’s flagship, coupling broad academic depth with an applied, industry‑oriented culture. On campus, companies access large‑scale prototyping facilities, pilot‑scale lines, and specialized test tanks that move concepts toward deployable systems. A statewide Cooperative Extension and field sites connect R&D teams to real‑world conditions across Maine’s coastal, forested, and cold‑weather settings, while industry liaisons streamline sponsored research. Funding comes from competitive federal sources such as the National Science Foundation, Department of Energy, U.S. Department of Agriculture, and the National Oceanic and Atmospheric Administration, while a centralized tech transfer office supports IP, licensing, SBIR/STTR, and startup formation.
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