CO2 Extraction of Vanilla Oil: A Supercritical Approach

Introduction

Vanilla oil, extracted from Vanilla planifolia, is a highly valued natural flavoring agent widely used in the food, fragrance, and pharmaceutical industries. Traditional extraction methods, such as solvent extraction and steam distillation, often lead to residual solvents, loss of aromatic compounds, and degradation of sensitive components.

CO2 supercritical extraction (CO2 SUPERCRITICAL EXTRACTION MACHINE) offers a solvent-free, high-purity, and selective extraction method that preserves the delicate vanillin and aroma compounds in vanilla oil. This article explores the CO2 extraction process, key parameters, experimental data, and industrial applications.

1. Principles of CO2 Supercritical Extraction of Vanilla Oil

CO2 reaches its supercritical state when subjected to high pressure (>7.38 MPa) and temperature (>31.1°C). In this state, CO2 behaves both as a gas and a liquid, allowing it to penetrate vanilla pods and selectively dissolve aromatic compounds without affecting their natural structure.

The CO2 supercritical vanilla extraction process involves:...

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