Naslov
Free and Bound Sulphur Containing and Other Volatile Compounds from Evergreen Candytuft (Iberis sempervirens L.)

Autori
Mastelić, Josip ; Blažević, Ivica ; Jerković, Igor

Izvornik
Croatica Chemica Acta (0011-1643) 79 (2006), 4; 591-597

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Iberis sempervirens L.; evergreen candytuft; Brassicaceae; glucosinolates; O-glycosides; volatile aglycones; isothiocyanates; GC-MS

Sažetak
Volatile fractions of evergreen candytuft, Iberis sempervirens (Brassicaceae), were isolated by simultaneous hydrodistillation-extraction from fresh plant material prior and after autolysis and from dried plant material and were then analyzed using GC and GC-MS. Isothiocyanates, nitriles, aliphatic alcohols, carbonyls, fatty acids, hydrocarbons, terpene compounds, C13-norisoprenoids and phenylpropane derivatives were identified - thirty-nine components in all. Major components of all samples were: 3-butenyl isothiocyanate (17.4-63.3 %), 5-methylthiopentanonitrile (2.2-9.5 %), 4-methylthiobutanonitrile (4.8-6.9 %), allyl isothiocyanate (4.0-6.6 %), 4-methylthiobutyl isothiocyanate (2.9-6.2 %) and 3-methylthiopropyl isothiocyanate (1.3-3.4 %). Oil isolated after autolysis is more complex than the other two oils. It is composed of a large number of compounds. Some of them are identified as O-aglycones such as eugenol, (Z)-3-hexene-1-ol and 1H-indole. O-glycosides of volatile compounds were isolated from fresh plant material and purified by selective extraction and column chromatography. After hydrolysis with beta-glucosidase, the liberated volatile aglycones were also analyzed by GC and GC-MS. Nineteen aglycones were identified. The main aglycones identified were: eugenol (15.2 %), 2-phenylethanol (12.9 %), 2-hydroxy-b-ionone (10.6 %), 2-tert-butyl-5-methylphenol (9.2 %) and methyl-2, 5-dihydroxybenzoate (4.5 %).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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