Extraction of peppermint (Mentha piperita L.) by supercritical carbon dioxide. [M.Sc. thesis] | Ekstrakcija mente (Mentha piperita L.) superkriticnim ugljendioksidom. Magistarski rad
2006
Milic, S.M.
In the present thesis, extraction of essential oil from peppermint leaves using supercritical CO2 was studied. Hydrodistillation of peppermint leaves resulted in the high yield of essential oil (3.19 cubic cm/100 g of dry herb), which indicated very good quality of the investigated herb. The major compounds identified in the essential oil were: L-menthone (39.15%), menthol (30.67%), isomenthone (10.33%) and menthylacetate (5.46%). Peppermint leaves were extracted with supercritical CO2 under various extraction conditions in order to determined yield, composition and organoleptic characteristics of extract. Extraction kinetics was investigated at differnet temperature (35, 40, 45 and 50 deg C) and constant pressure (100 bar), and extraction system peppermint leaves - supercritical CO2 was modelated. Empirical models by Naik and Reverchon-Sesti Osseo differential mass balance model were capable of describing the mass transfer kinetics. The overall extraction curves for total extract, methol and menthone were successfully fitted by used models.
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