Solvent Free Extraction

Solvent-free extraction refers to cannabis processing methods that isolate cannabinoids and terpenes without chemical solvents like butane, propane, or ethanol. Common techniques include rosin pressing (heat + pressure), water-based separation, and mechanical sieving of trichomes. These methods preserve volatile aromatic compounds that solvent-based extraction may strip or degrade. Lineage records and lab analysis increasingly document terpene profiles from solvent-free products, offering breeders direct sensory feedback on cultivar aromatics. Solvent-free material is primarily valued in breeding programs for phenotype assessment rather than as a primary classification trait.

Breeders working with solvent-free extracts can evaluate terpene retention and aromatic stability across generations without chemical interference. This method supports selection for cultivars with robust, heat-stable terpene profiles and dense trichome expression.