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418 results about "Cannabis substance" patented technology

Cannabis, also known as marijuana among other names, is a psychoactive drug from the Cannabis plant intended for medical or recreational use. The main psychoactive part of cannabis is tetrahydrocannabinol (THC), one of 483 known compounds in the plant, including at least 65 other cannabinoids.

Method for extracting and purifying cannabidiol in cannabis sativa

The invention discloses a method for extracting and purifying cannabidiol in cannabis sativa, belonging to the field of chemical extraction and purification. The method comprises the following steps:harvesting, drying and crushing cannabis sativa leaves to obtain a clean material for later use; carrying out continuous countercurrent extraction on the clean material by adopting an ethanol solutionto obtain a crude extract; concentrating the crude extract, and conducting winterizing to remove impurities so as to obtain a winterized mixed solution; filtering the winterized mixed solution, heating the solution to 130-150 DEG C, and decarboxylating the solution for 1-2 hours to obtain a decarboxylated solution; carrying out column chromatography on the decarboxylation solution by using an ethanol solution to realize impurity removal, and conducting eluting by using the ethanol solution to obtain an eluent; concentrating the eluent to obtain an extract; supersaturating and dissolving the extract with a solvent, and then carrying out cooling to -30 DEG C to -10 DEG C to obtain a crystal substance; and washing the crystal substance with solvent, draining the crystal substance and then carrying out drying to obtain cannabidiol. According to the method, a decarboxylation degree is complete, the purity of cannabidiol is high, and tetrahydrocannabinol (THC) is almost not contained.
Owner:ZHEJIANG SHUANGZI INTELLIGENT EQUIP CO LTD
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