Phenolic content and efficient concentration (IC₅₀) of lignin samples^a.

	GAE (%)	OH (wt%)	ABTS*	DPPH**
			IC50	IC50
OS	35.2	14.1	3.51 ± 0.1	15.85 ± 0.3**
KS	33.5	13.4	3.47 ± 0.4	16.63 ± 0.5**
OE	34.7	13.9	4.22 ± 0.3	12.85 ± 0.9**
KE	22.8	9.1	5.46 ± 0.2*	22.75 ± 0.3**
BHT	—	—	10.8 ± 0.8	19.01 ± 0.2
Trolox	—	—	2.80 ± 0.0	5.00 ± 0.1

^aAnalysis of variance ANOVA: p > 0.001; p > 0.5 (Tukey and Bonferroni corrections:* = p > 0.001 and ** = p > 0.5).