Table 2.

Phenolic compound contents in the cell wall fractions

μg/g DW
Fraction		Vanillic acid	Vanillin	Coumaric acid	Syringic aldehyde	Ferulic acid	Vitexin
WSF	Nike	0.360 ± 0.048	0.108 ± 0.028	0.169 ± 0.065	0.152 ± 0.052	0.744 ± 0.142	0.757 ± 0.014
	B14	0.260 ± 0.007	0.150 ± 0.045	0.103 ± 0.036	0.09 ± 0.013	0.811 ± 0.336	0.930 ± 0.322
CSF	Nike	0.071 ± 0.003	0.009 ± 0.001	0.038 ± 0.004	0.016 ± 0.003	0.162 ± 0.006	0.213 ± 0.014
	B14	0.104 ± 0.032	0.016 ± 0.003*	0.055 ± 0.011	0.032 ± 0.018	0.295 ± 0.055*	0.326 ± 0.053*
NSF	Nike	0.258 ± 0.021	0.034 ± 0.009	0.150 ± 0.021	0.055 ± 0.009	0.635 ± 0.021	1.085 ± 0.085
	B14	0.201 ± 0.014*	0.043 ± 0.008	0.12 ± 0.014	0.042 ± 0.003*	0.622 ± 0.012	1.022 ± 0.074
K1SF	Nike	1.771 ± 0.115	1.196 ± 0.240	0.431 ± 0.041	1.212 ± 0.071	2.306 ± 0.176	3.349 ± 0.270
	B14	1.886 ± 0.530	1.917 ± 0.505	0.593 ± 0.032**	0.895 ± 0.11*	2.925 ± 0.281*	4.044 ± 0.361*
K4SF	Nike	0.477 ± 0.286	0.079 ± 0.01	0.046 ± 0.012	0.116 ± 0.048	0.145 ± 0.050	0.185 ± 0.047
	B14	1.597 ± 0.199*	0.336 ± 0.034**	0.127 ± 0.009**	0.370 ± 0.045**	0.563 ± 0.073**	0.256 ± 0.034

UPLC determination of the vanillic acid, coumaric acid, ferulic acid, vanillin, syringic aldehyde and vitexin contents in the cell wall fractions (WSF – water-soluble fraction, CSF – CDTA-soluble fraction, NSF – Na₂CO₃-soluble fraction, K1SF – 1 M KOH-soluble fraction and K4SF – 4 M KOH-soluble fraction) for fibres from transgenic flax line B14 and non-transgenic control flax Nike. Analyses were performed as described in the Methods section. Data represents the mean values ± SD from three independent experiments. The significance of the differences between the means was determined using Student’s t test (* - P < 0.05, ** - P < 0.01).