Large group of chemical compounds that are the main constituent of essential oils. In the narrower sense, these are hydrocarbon compounds, whereas all those containing oxygen are considered terpenoids. These colourless aromatic substances also occur in the form of aldehydes, ketones and alcohols in numerous oils, balsams and plant resins. Terpene derivatives are for example camphor, citral, linalool, menthol, nerol (geraniol), pinene and phytol. Carotenoids (a large group of pigments found in the animal and plant kingdoms) also belong to the terpenes. Terpenes are present in grapes in free form, or are also formed in bound form during vinification.
I have great respect for the scope and quality of the wein.plus encyclopaedia. It is a unique place to go for crisp, sound information on terms from the world of wine.Dr. Edgar Müller
Dozent, Önologe und Weinbauberater, Bad Kreuznach