Hydrogen Peroxide Treatment and the Phenylpropanoid Pathway Precursors Feeding Improve Phenolics and Antioxidant Capacity of Quinoa Sprouts via an Induction of L-Tyrosine and L-Phenylalanine Ammonia-Lyases Activities

Table 1

Antioxidant capacity of quinoa sprouts affected by hydrogen peroxide treatments and precursors feeding.

Cultivation conditions	Antiradical activity; mg TE/g DW	Reducing power; mg TE/g DW	Chelating power; mg EDTA/g DW	Total antioxidant capacity
C	0.77 ± 0.10	2.29 ± 0.10	3.38 ± 0.34	1.00
C1	1.08 ± 0.18	4.79 ± 0.29	4.02 ± 0.16	1.56
C2	1.53 ± 0.14	4.71 ± 0.24	3.71 ± 0.33	1.71
S	1.42 ± 0.27	4.81 ± 0.45	3.58 ± 0.20	1.67
S1	1.53 ± 0.16	4.85 ± 0.47	3.70 ± 0.23	1.73
S2	1.50 ± 0.16	4.44 ± 0.11	3.89 ± 0.47	1.68
F	1.71 ± 0.06	4.44 ± 0.37	3.40 ± 0.30	1.72
F1	1.47 ± 0.21	4.69 ± 0.51	3.77 ± 0.52	1.69
F2	1.67 ± 0.15	5.03 ± 0.11	3.41 ± 0.73	1.79
Y	1.92 ± 0.08	5.26 ± 0.18	3.63 ± 0.41	1.95
Y1	1.58 ± 0.15	4.70 ± 0.52	3.71 ± 0.44	1.73
Y2	1.89 ± 0.14	4.01 ± 0.12	4.34 ± 0.07	1.83

Note: means in columns followed by different letters are significantly different at . Each value represents the mean of three independent experiments (±SD).
C: control; C1: treatment with 50 mM H₂O₂; C2: treatment with 200 mM H₂O₂; S: shikimic acid feeding; S1: treatment with 50 mM H₂O₂ and shikimic acid feeding; S2: treatment with 200 mM H₂O₂ and shikimic acid feeding; F: phenylalanine feeding; F1: treatment with 50 mM H₂O₂ and phenylalanine feeding; F2: treatment with 200 mM H₂O₂ and phenylalanine feeding; Y: tyrosine feeding; Y1: treatment with 50 mM H₂O₂ and tyrosine feeding; Y2: treatment with 200 mM H₂O₂ and tyrosine feeding.