High speed deep UV fluorescence imaging for cocoa bean fraction separation

Overview

Deep UV fluorescence imaging technology is designed to optimize the separation of cocoa bean fractions, specifically targeting the identification of cocoa nibs. By utilizing distinct organic chemical signatures found in the nibs, the technology enhances cocoa processing efficiency by accurately identifying and enabling the separation of nibs from less desirable fractions such as shells and fines. This advancement is intended to improve quality and yield in cocoa processing.

Technical specifications

The technology is based on deep UV fluorescence spectral imaging, which exploits the unique fluorescence characteristics of organic compounds, particularly aromatic amino acids concentrated in cocoa nibs. A commercial instrument, the UltraPAT, has been adapted for this purpose with a modular design enabling a high-resolution, multichannel deep UV fluorescence imager. The system can process an observable volume of up to 1 L/sec in an air stream or 1000 cm²/sec on a conveyor belt, supporting deployment across different processing environments. The system is intended to provide precise, automated detection capabilities to support downstream separation processes.

Technology readiness level

The current development stage is at Technology Readiness Level 3, indicating that analytical and experimental critical function proof of concepts have been demonstrated in a laboratory environment. Next steps include building a prototype for small-scale demonstration to validate effectiveness in real-world conditions and integrate it with existing separation methods.