cbdhemp808
Well-Known Member
Good question.Actually I know how to press and extract using alcohol…my question is the difference between the two products…not the procedure
My understanding is that a rosin press is producing only the resin from the trichomes, which would come out as a pure, sticky honey-colored material. This is composed mainly of cannabinoids, terpenes, and flavonoids.
Alcohol extraction is pulling out the resin along with other constituents of the bud material, including chlorophyll, waxes... a bunch of stuff, known as "undesirables". (I abbreviate alcohol extracted oil as AEO.)
If you do a "cold wash" of the bud material (using very cold alcohol and buds), this reduces the undesirables. The most purity is achieved by doing a cold wash of the kief (i.e. the isolated trichomes). So, basically you are making hash, and then producing hash oil by way of AEO. The key to producing high-quality AEO is to purge the alcohol to a high degree, which means evaporating off almost all the alcohol. The lower the temperature this is done at, the longer it takes, but the less terpenes are lost. My understanding is that a vacuum system allows the evap temperature to be lower. This is what the Source Turbo uses.
One can produce high-quality vape oil using kief and cold wash AEO and hot-plate purge (not vacuum). It produces a light amber oil.