Variabilita obsahu a složení silic levandule lékařské z různých proveniencí

The aim of this work was the determination of variability of the essential oil content in lavender obtained from different sources. The results indicate that significant differences were found both in the essential oil content and in its composition. Only the samples of the Lavandula angustifolia P. MILL (L. officinalis CHAIX) were used to obtain the essential oils. According to the Czech Pharmacopoeia 2014, the drug (lavender flowers) should contain at least 1.3 ml of essential oil in 100 g of anhydrous drug and lavender essential oil should contain following ingredients: limonene 1.0%, lavandulol > 0.1%, α-terpineol < 2.0%. In addition, five microbial lavender samples of different provenances were determined by microbiological purity of the drug, whereby the amount of colonies per 1 ml was determined for the total number of microorganisms, spore microorganisms, enterobacteria, yeasts and fungi