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Volatile constituents of the dried leaves and stems of Nasturtium officinale R. Br. collected after hydrolysis were analyzed by GC and GC/MS. The major volatile constituents of the leaves were 2-phenylethyl isothiocyanate (72.9%), pulegone (8.0%), heptyl isothiocyanate (4.9%) and 4-phenylbutyl isothiocyanate (3.2%), while the main volatile constituents of the stems were 2-phenylethyl isothiocyanate (83.5%), 4-phenylbutyl isothiocyanate (6.9%), pulegone (2.2%) and sec-butyl isothiocyanate (1.9%).
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Afsharypuor et al. (2008) studied this question.
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