Electrostatic spray-dried protection of sensitive ingredients for beverages
A novel electrostatic spray drying (ESD) system to protect sensitive botanical extracts or natural colors in clear beverages. This technology creates submicron, rapidly redispersible microcapsules that maintain beverage clarity while preserving ingredient functionality over shelf life.
Overview
The electrostatic spray-dried protection system offers a pioneering method to incorporate sensitive botanical extracts or natural colors into clear beverages without compromising clarity or functionality. By utilizing a low-temperature electrostatic spray drying (ESD) process, active ingredients are encapsulated within a glassy protective matrix formed from food-grade biopolymers. This ensures the stability of ingredients against acid, oxygen, heat, and light, while allowing the microcapsules to disperse homogeneously and maintain transparency in beverages.
Technical specifications
- Protective Encapsulation: Utilizes gum arabic, maltodextrin, or modified starch as carriers to form a glassy matrix around the active ingredients.
- Low-Temperature Processing: ESD minimizes thermal damage, preserving ingredient quality.
- Submicron Particle Size: Ensures near-transparent dispersion, preventing haze or sedimentation.
- High Stability: Designed to remain stable at pH 2.8–3.5, suitable for low-pH beverages.
- Controlled Release: Active ingredients are released only upon dilution or consumption, maintaining functionality over shelf life.
Technology readiness level
The technology has reached TRL 5, indicating that it has been validated in relevant environments. Future validation phases include optimizing ESD conditions, assessing redispersion and sensory neutrality, and conducting accelerated shelf-life tests. Pilot trials will further compare the effectiveness of this system against conventional methods.
About Catholic University of Leuven (KU Leuven)
KU Leuven is a large comprehensive public research university in Leuven, Belgium, anchored by a major academic medical center and a broad multidisciplinary profile. Industry engages through co-located facilities and shared labs, including access to advanced cleanrooms and prototyping via imec’s Leuven campus. Integration with UZ Leuven supports clinical partnerships and data-rich trials, while research and technology parks around the city connect companies with faculty and student talent. Research is backed by competitive European and Belgian funding, including the European Commission and the Research Foundation – Flanders (FWO). KU Leuven Research & Development manages IP, licensing, and spin-off formation, offering standardized agreements and dedicated partnership managers.
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