Post-winnowing cocoa nib separation using density gradient centrifugation
Innovative density gradient centrifugation technique for enhanced separation of cocoa nibs, removing impurities such as fine shell fragments for superior cocoa product quality.
Overview
The proposed solution employs density gradient centrifugation (DGC) to improve the quality of cocoa nibs by selectively removing impurities. This method capitalizes on the differences in buoyant density to efficiently separate unwanted fine shell fragments and other particles, enhancing the purity and quality of cocoa products. By optimizing gradient medium density, centrifugation time, and speed, this approach promises significant improvements in the recovery yield of high-quality cocoa nibs.
Technical specifications
Key features:
- Utilizes density gradient centrifugation for effective separation based on particle size and density.
- Optimizes gradient medium density, centrifugation time, and speed for maximum efficiency.
- Proven effective in previous studies for separating components like protein and starch in similar processes.
This method is particularly beneficial in refining cocoa nibs by eliminating impurities that affect the quality of the final product. It includes trials using commercially available density gradient media and aims to develop a food-grade medium specifically for cocoa processing.
Technology readiness level
Currently at TRL 4, this technology has been validated in laboratory settings with plans for further development and testing. The future validation phase includes extensive trials and chemical analysis to ensure compatibility and efficacy in different cocoa processing scenarios.
About McGill University
McGill University is a comprehensive public research university in Montréal, Québec, known for an international community and a research‑intensive culture. Faculty and industry collaborate through shared core facilities and co‑located labs across downtown and hospital sites, with integration into a major hospital system enabling clinical research and translation. Proximity to Montréal’s established industry clusters and a vibrant innovation district give companies access to talent, pilots, and testbeds. Research is supported by Canada’s Tri‑Agency and the Canada Foundation for Innovation, alongside provincial and philanthropic sources. A dedicated technology transfer office streamlines contracting and IP, supports licensing and sponsored research, and connects partners to startups and entrepreneurship resources.
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