Comparison of the chemical composition of three species of smartweed (genus Persicaria) with a focus on drimane sesquiterpenoids Author Prota, N. Plant Research International, PO Box 619, 6700 AP Wageningen, The Netherlands & Laboratory of Plant Physiology, Wageningen University, PO Box 658, 6700 AR Wageningen, The Netherlands Author Mumm, R. Author Bouwmeester, H. J. Author Jongsma, M. A. text Phytochemistry 2014 2014-12-31 108 129 136 http://dx.doi.org/10.1016/j.phytochem.2014.10.001 journal article 286382 10.1016/j.phytochem.2014.10.001 a4ecf8f4-ef39-4ff3-b1f2-3a18e34cc628 1873-3700 10490544

Table 5 Volatile compounds identified in the headspace of flowers and leaves of P. hydropiper.

Compound	R.I.	Flowers a (%)	Leaves a (%)
a The composition is expressed as percentage of the total peak area of the volatile blend. N = 3.
b- Caryophyllene	1446	32.3	43.6
a- Humulene	1477	18.0	19.6
(E)-b- Farnesene	1450	17.0	21.8
Limonene	1040	15.4	1.2
a- Bisabolol	1650	7.1	1.7
Decanal	1211	6.6	9.6
a- Muurolene	1506	2.8	1.6
Humulene epoxide II	1611	0.9	0.9