Matrix solid-phase dispersion (MSPD) in chromatographic analysis of essential oils in herbs

Abstract

Matrix solid-phase dispersion (MSPD) is a simple and cheap sample preparation procedure allowing for the reduction of organic solvent consumption, exclusion of sample component degradation, improvement of extraction efficiency and selectivity, elimination of additional sample clean-up and pre-concentration step before chromatographic analysis. The paper shows the possibility of MSPD application for qualitative and quantitative analysis of essential oil components in the following herbs: thyme (Thymus vulgaris L.), mint (Mentha piperita), sage (Salvia officinalis L.), chamomile (Chamomilla recutita L.), marjoram (Origanum majorana L.), savory (Satureja hortensis L.), and oregano (Origanum vulgare). The results obtained using MSPD are compared to two other sample preparation methods: steam distillation (SD) and pressurized liquid extraction (PLE). The results presented in the paper prove that the total amount and the composition of the essential oil component obtained by MSPD are equivalent to those gained by one of the most effective extraction technique, PLE.