Table 1 in Comparison of the chemical composition of three species of smartweed (genus Persicaria) with a focus on drimane sesquiterpenoids

Table 1 Chemical composition of organic extracts of flowers a of three Persicaria species.
CompoundR.I.P. hydropiper flowers b (%)P. minor flowers b (%)P. maculosa flowers b (%)Monoterpenes0.160.090.08Limonene10340.140.060.07Bornyl acetate12620.020.030.01Sesquiterpenes98.3352.7618.65Drimanes78.5729.980.11Polygodial c189276.7125.220.1Isodrimenin20391.270.88n.d.Drimenin19730.584.24n.d.Drimenol17880.01n.d.n.d.Non-drimanes19.7632.7818.54Caryophyllene14326.6512.540.62a- Humulene14685.021.450.81(E)-b- farnesene14543.876.774.26a- Bisabolol16931.361.51n.d.a- Muurolene15071.25n.d.6.29Aristolone17160.710.34n.d.Caryophyllene oxide15970.29n.d.n.d.(E)-b- bergamotene14920.220.120.02b- Bisabolene15130.120.01n.d.(E)-nerolidol15630.09n.d.n.d.(E)-a- bergamotene14390.080.020.01b- Elemene d13970.040.022.86Humulene epoxide II16250.03n.d.n.d.d- Cadinene15230.02n.d.0.03b- Bisabolol16770.01n.d.n.d.b- Selinene1500n.d.n.d.3.64Diterpenes1.3135.8556.14Neophytadiene isomer I18360.8820.6735.07Neophytadiene isomer III18800.38.3914.59Neophytadiene isomer II18610.136.796.48Others0.1911.3225.15Heneicosane e21000.1710.7824.74Dihydro-a- ionone f14190.02n.d.n.d.Nonanal g1105n.d.0.540.41Total abundance (TIC)100100100Relative abundance (TIC)1001.440.84
R.I. = retention index; n.d. = not detected.
a Average of three replicates of each of three developmental stages (N = 3 × 3, Table 3). Standard errors were on average 28% of a given value.
b Relative content as percentage of the total content (sum of TIC peak areas) of a given species. Multiplication of the percentages in each column with the relative abundance of the species yields the relative contents between species.
c Polygodial contains a fraction of 9- epi -polygodial which cannot be estimated reliably by GC–MS.
d b- Elemene is the heat-induced Cope rearrangement product formed from germacrene A in the GC–MS injection path (de Kraker et al., 1998).
e Alkane.
f Carotenoid derivative.
g Fatty acid derivative.