Original scientific paper

Free and Glycosidically Bound Volatiles of Mentha citrata Ehrh.

Josip Mastelić ; Department of Organic Chemistry, Faculty of Chemical Technology, N. Tesle 10/V, 21000 Split, Croatia
Mladen Miloš ; Department of Organic Chemistry, Faculty of Chemical Technology, N. Tesle 10/V, 21000 Split, Croatia
Danica Kuštrak ; Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia

Abstract

Free and glycosidically bound volatiles of surficial parts of Mentha citrata were investigated. Free volatile compounds were isolated from dried plant material by two methods: hydrodistillation and extraction with pentane used as control. Free volatile compounds as well as the aglycones obtained after enzymatic hydrolysis of gly-cosides were analyzed by gas chromatography-mass spectrometry (GC-MS). A significant difference in qualitative and quantitative composition of volatile compounds of the essential oil and pentane extract was found. The major components of the essential oil and pentane extract were linalyl acetate (21.46%; 42.02%), linalool (13.68%; 22.66%), 1,8-cineole (12.51%; 6.40%), β-myrcene (8.10%; 2.87%), α-terpineol (7.38%; 0.73%) and geranyl acetate (8.66%; 1.76%). The major components of the volatile aglycones were 1-octen-3-ol (40.28%), eugenol (12.29%), 3-octanol (7.09%), linalool (4.59%), benzyl alcohol (3.71%), 2-phenylethanol (3.67%), 3-hexene-1-ol (2.87%) and 1-heptene-3-ol (2.88%). Compared with free volatile compounds (essential oil: 1.56%; pentane extract: 1.64% ), the glycosidically bound volatiles were present in a lower concentration, about 0.0068%.

Keywords

Mentha citrata; volatile compounds; changes during hydrodistillation; glycosidically bound volatiles; GC-MS

Hrčak ID:

132017

URI

https://hrcak.srce.hr/132017

Publication date:

4.9.2000.

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