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Tetraacylglycerolsa
(HPLC fraction # )
 m/z of [M + Li]+   Contents (%)b
LsLsLn (55)                 1,283.90 0.21 ± 0.06
LsLsLsL (57, 58)                   1,285.90 0.24 ± 0.09
LsLs-OH20:2-O (57, 58)         1,285.90 0.19 ± 0.06
LsLsLsO (59, 60)                   1,287.90 0.25 ± 0.00
LsLsLnLn (63)                      1,235.90 0.02 ± 0.01
LsLsLLn (66)                         1,237.90 0.04 ± 0.01
LsLsOLn (68)                        1,239.90 0.06 ± 0.02
LsLsLL (68)                            1,239.90 0.02 ± 0.01
LsLsOL (70)                          1,241.90 0.10 ± 0.01
LsLsOP (72, 73)                     1,217.90 0.02 ± 0.01
LsLsOO (73)                          1,243.90 0.06 ± 0.00
LsLsLS (74)                           1,243.90 0.03 ± 0.00
LsLsOS (76)        1,245.90 0.02 ± 0.00

a, abbreviations: Ls- lesquerolic acid; S- stearic acid; O- oleic acid;
L- linoleic acid; Ln- linolenic acid; P-palmitic acid; OH20:2,
monohydroxy group on 20 carbon atoms fatty acid with 2 double bonds.
b, contents are presented as average ± standard deviation of triplicate measurements.

Table 1 The contents (%) of tetraacylglycerols in the seed oil of Physaria fendleri