Medicinal and aromatic plants – industrial profiles

Retention times versus percentage of components
This hypothesis was put to the test, using essential oils alone or in mixes, by calculating the total
per cent of components in different RT intervals (Table 23.1) and predicting what the effect on
the smooth muscle would be.
It was noted that monoterpenes were in the RT 
10 interval, with the exception of 1,8-
cineole which was also found here, while alcohols, ketones and aldehydes occurred in the 
11–15 min interval, esters and phenols in the 15–20 min interval and sesquiterpenes thereafter.