Hemp oil or CBD oil is a versatile cannabidiol product that offers more than one intake method for the benefit of the users. The source plant of hemp oil is hemp, a traditionally cultivated cannabis plant. However, it’s a modern application i.e. extraction of cannabinoids like CBD differs from its traditional application, using hemp seeds as a food supplement and hemp fiber for industrial purposes. This article mainly focuses on answering the most significant question when it comes to purchasing this oil – how is hemp oil extracted? Extraction can be done in several ways however, the most significant and potential ones are discussed here. Read on.
It is the most common extraction method employed in the manufacturing of CBD oil. Although it increases the manufacturing costs, as it requires expensive machinery and equipment, the quality of the CBD oils extracted using CO2 extraction makes the tradeoff worth it. The extraction solvent used in the extraction is CO2. There are three types of CO2 extraction, namely supercritical, subcritical and mid-critical extraction. Supercritical extraction is mostly preferred for hemp oil manufacture. It uses CO2 in a supercritical state (the state between liquid and gas) to pull out all essential compounds from hemp. Extreme temperatures and pressures are used in the extraction.
Ethanol extraction uses grain alcohol/ethanol to extract hemp oil. It has an upper hand over hydrocarbon extraction methods due to the non-toxic nature of the extraction solvent. The extraction solvent used in any hemp oil extraction will be removed from the final product but the chances for it remaining in traces due to the flaws in purification still exist. If the extraction solvent is toxic, traces of it remaining in the hemp oil will affect the oil quality and health of the user adversely.
Hydrocarbon extraction involves the use of hydrocarbon solvents like propane, butane, and hexane to pull out phytochemicals from hemp. These hydrocarbon extractions differ from each other in terms of the ratios of the hemp compounds present in the hemp oil. Because it has a low boiling point, the butane solvent allows the cold boiling of the leftover solvents in the hemp extract possible, thereby helping to preserve temperature sensitive terpenes. Blending butane with propane increases the efficiency of the extraction, as propane has a very low boiling point.
The quality of an extraction method used in the manufacture reflects in its overall quality. We recommend you to go for hemp oils made using CO2 extraction or ethanol extraction.