Author/Editor		Kreft, Samo
Title		Tehnologija določa kakovost
Translated title		Technology defines quality
Type		članek
Source		Herbika Ljubl
Vol. and No.		Letnik 2, št. 2
Publication year		2001
Volume		str. 14-7
Language		slo
Abstract		Essential oils are mixtures of easily evaporable compounds, mostly including two groups of compounds: terpenoids and phenylpropanes. They are secondary metabolites, which means that a plant does not need these substances for mere survival, but when it does have them its competitive advantage over other species in the ecosystem is significantly increased. They are found practically exclusively in higher plants. It is estimated that over 17,000 species of higher plants contain essential oils. They can be found in different glands on the surface of plants or in variously-shaped gland cavities and channels within plant tissue. The contents of essential oil differ greatly among individual drugs, but most of them contain several percent.
Descriptors		PLANT OILS OILS, VOLATILE AROMATHERAPY