CO2 Extraction of Hemp vs. Ethanol Extraction: A Comparative Analysis

Introduction

Hemp extraction is essential for producing CBD, minor cannabinoids, and terpenes for pharmaceuticals, nutraceuticals, and cosmetics. Two of the most common extraction methods are CO2 supercritical extraction and ethanol extraction. Each method has distinct advantages and limitations, influencing factors like purity, efficiency, solvent residue, and scalability.

CO2 supercritical extraction (CO2 SUPERCRITICAL EXTRACTION MACHINE) is a solvent-free, highly selective, and eco-friendly technique, while ethanol extraction is known for its low cost and high efficiency. This article compares CO2 vs. ethanol extraction, analyzing processes, efficiency, experimental data, and industrial applications.

1. Overview of CO2 and Ethanol Extraction Processes

CO2 Supercritical Extraction of Hemp
CO2 reaches its supercritical state at 31.1°C and 7.38 MPa, allowing it to act as both a gas and a liquid, efficiently extracting cannabinoids and terpenes.

The CO2 extraction process consists of:...

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