Thin-film cocoa liquor pasteurization using scalable SSHE technology

Overview

The thin-film cocoa liquor pasteurization system utilizes a continuous scraped-surface heat exchanger (SSHE) to achieve mild pasteurization of cocoa liquor. This technology is designed to maintain the delicate balance of flavors while ensuring thorough microbial control. It addresses the unique challenges posed by high-viscosity, fat-rich matrices through its gentle shear and short residence time, allowing for consistent pasteurization without compromising the organoleptic properties of the cocoa liquor.

Technical specifications

Key features:

• Uniform heat transfer: The SSHE system's rotating blades prevent fouling and ensure uniform heat distribution, crucial for high-viscosity fluids like cocoa liquor.
• Scalable throughput: Capable of handling 3–5 metric tons per hour, the modular design allows for efficient scaling.
• Microbial control: Achieves a ≥2-log reduction in total viable count (TVC) while minimizing thermal gradients.
• Sensory preservation: Preserves volatile aroma compounds and prevents off-flavor development.
• Regulatory and operational flexibility: Compatible with CIP processes and compliant with EU regulatory standards.

Technology readiness level

This technology has been validated to a Technology Readiness Level of 9, indicating that it is fully developed and ready for commercial deployment. The process has undergone rigorous testing, including pilot evaluations, process optimization, sensory validation, and scale-up assessments, confirming its efficacy and readiness for market introduction.