CO2 Extraction in the Food Industry: A Supercritical Innovation

Introduction

The food industry continuously seeks safer, cleaner, and more efficient extraction methods for flavors, essential oils, antioxidants, and functional compounds. Traditional extraction techniques, such as solvent extraction, steam distillation, and cold pressing, often result in residual solvents, thermal degradation, or loss of volatile compounds.

CO2 supercritical extraction (CO2 SUPERCRITICAL EXTRACTION MACHINE) is a solvent-free, eco-friendly, and highly selective extraction process that ensures the purity, stability, and potency of food ingredients. This article explores how CO2 extraction is revolutionizing the food industry, key parameters, experimental data, and industrial applications.

1. Principles of CO2 Supercritical Extraction in Food Processing

CO2 reaches its supercritical state at temperatures above 31.1°C and pressures above 7.38 MPa, making it an ideal solvent for food-grade extractions. In this state, CO2 exhibits liquid-like solubility and gas-like diffusivity, allowing it to selectively extract flavors, oils, and bioactive compounds while leaving behind unwanted materials.

The CO2 supercritical extraction process consists of:...

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