Table 3.

Contribution of phenolic compounds [%] to total phenols depending on root color

Root color	Phenylpropanoids	Flavonols	Anthocyanins
White	22.3 aa	14.5 a	0.8 a
Yellow	21.4 a	16.0 b	1.4 b
Orange	24.0 a	16.4 b	1.3 b
Red	23.8 a	16.1 b	1.2 b
Purple	30.5 b	16.6 b	20.8 c

^aMeans followed by the same letter in each column do not differ significantly according to Newman–Keuls test at p = 0.05