Table 2 in Comparison of the chemical composition of three species of smartweed (genus Persicaria) with a focus on drimane sesquiterpenoids

Table 2 Chemical composition of organic extracts of leaves a of three Persicaria species. CompoundR.I.P. hydropiper leaves b (%)P. minor leaves b (%)P. maculosa leaves b (%)Monoterpenes0.210.020.02Bornyl acetate12620.01n.d.n.d.Limonene10340.200.020.02Sesquiterpenes67.8511.113.15Drimanes45.124.900.23Polygodial c189244.273.960.23Isodrimenin20390.650.14n.d.Drimenin19730.190.80n.d.Drimenol1788n.d.n.d.n.d.Non-drimanes22.736.212.92(E)-b- farnesene14547.782.751.01a- Humulene14686.200.280.06Caryophyllene14326.102.580.02a- Bisabolol16931.150.41n.d.(E)-nerolidol15630.500.05n.d.(E)-b- bergamotene14920.320.04n.d.Aristolone17160.310.08n.d.Caryophyllene oxide15970.13n.d.n.d.(E)-a- bergamotene14390.110.01n.d.b- Bisabolene15130.05n.d.n.d.b- Elemene d13970.030.010.62a- Muurolene15070.03n.d.0.88Humulene epoxide II16250.02n.d.n.d.b- Bisabolol1677n.d.n.d.n.d.d- Cadinene1523n.d.n.d.n.d.b- Selinene1500n.d.n.d.0.33Diterpenes31.9288.8096.68Neophytadiene isomer I183621.0159.0662.72Neophytadiene isomer III18807.6521.4624.40Neophytadiene isomer II18613.268.289.56Others0.050.090.15Heneicosane e21000.030.060.12Dihydro-a- ionone f14190.01n.d.n.d.Nonanal g11050.010.030.03Total abundance (TIC)100100100Relative abundance (TIC)10034.422.3 R.I. = retention index; n.d. = not detected. a Average of three replicates of each of four developmental stages (N = 3 × 4, 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.