Tuepenes are a large class of organic hydrocarbons produced by a wide variety of plants, and are referred to as terpenoids when denatured by oxidation (drying and curing of the flowers). They are the main building block of any plant resin or "essential oils" and are a major contributor to the scent, flavor and color. Certain Terpenes are known to have medicinal values.
Terpenes are the main class of aromatic compounds found in cannabis and have been proven to interact with cannabinoids to provide a large range of different effects. While many believe it is the THC (delta9-tetrahydrocannabinol) that provides cannabis with its aroma, it is, in fact, the more unstable monoterpenes and sesquiterpenes which are responsible. It's the odor of the specific sesquiterpene, Cayophyllene Oxide, drug dogs are taught to detect.
Understanding the importance of Terpenes allows the educated user to broaden their approach to searching for new strains based on smell and taste.
When you hear the term "aromatic", cannabis is not typically the first example that comes to mind. Cooking herbs such as mint, basil, rosemary, sage, tarragon and oregano are considered aromatic plants because of their desired aroma and favor (terpene profile) in the kitchen. Cannabis is no different, however, since there are endless combinations of genetics, the range of terpene profiles is immeasurable.
Terpenes are the essential building blocks of complex plant hormones, molecules, pigments, sterols and cannabinoids in cannabis. They are responsible for the pleasant, or unpleasant aroma and flavors of cannabis. Over 200 terpenes have been identified in the plant, but only a small minority have actually been studied for their pharmacological effects.