Ferro-reducing activity of the extracts of Tropaeolum tuberosum Ruiz & Pav. Kuntze
Conc. μg/mL	Ferro-reducing activity ± SD
	μM equivalents of ascorbic acid					μM equivalents of FeSO₄
	Pink mashua	Yellow mashua		Black mashua		Pink mashua		Yellow mashua		Black mashua
40	66.38 ± 3.85^a	74.16 ± 6.66^a		74.72 ± 9.18^a		58.90 ± 3.29^b		65.57 ± 5.71^b		66.04 ± 7.86^b
50	69.72 ± 3.47^c	88.61 ± 6.73^cd		99.72 ± 17.02^d		62.71 ± 4.29^e		77.95 ± 5.77^ef		87.47 ± 14.59^f
80	81.94 ± 12.94^g	140.28 ± 66.77^g		263.61 ± 34.21^h		72.23 ± 11.09ⁱ		92.23 ± 12.14ⁱ		227.95 ± 29.32^j
100	91.94 ± 12.72^k	190.83 ± 29.05^l		374.16 ± 16.91^m		80.80 ± 10.91ⁿ		165.57 ± 24.90^o		326.04 ± 16.49^p
150	115.27 ± 15.12^q	270.83 ± 12.58^r		474.71 ± 15.03^s		100.80 ± 12.96^t		220.80 ± 15.80^u		408.90 ± 12.88^v
Conc. μg/mL	Radical Kidnapping Percentage DPPH (%) ± SD
	Pink mashua		Yellow mashua		Black mashua		Vitamin C		Trolox
50	19.82 ± 2.01^a		31.99 ± 3.48^b		47.37 ± 3.96^c		85.31 ± 0.76^d		83.75 ± 0.86^e
100	30.74 ± 0.79^f		48.80 ± 2.63^g		53.12 ± 1.04^h		87.76 ± 1.09ⁱ		86.42 ± 0.88ⁱ
150	38.64 ± 5.54^j		55.31 ± 5.50^k		75.22 ± 2.18^l		88.62 ± 1.07^m		87.65 ± 0.78^m
200	60.04 ± 2.71ⁿ		66.03 ± 6.00^o		77.58 ± 1.41^p		89.38 ± 0.61^q		88.70 ± 0.94^q
250	63.10 ± 2.48^r		75.45 ± 1.54^s		83.81 ± 0.86^t		90.40 ± 0.93^u		90.01 ± 0.54^u
Conc. μg/mL	Radical Kidnapping Percentage ABTS●+ (%) ± SD
	Pink mashua		Yellow mashua		Black mashua		Vitamin C		Trolox
500	21.10 ± 1.54^a		33.89 ± 1.76^b		41.87 ± 1.79^c		86.38 ± 1.42^d		84.49 ± 0.65^d
600	23.92 ± 1.63^e		40.20 ± 2.40^f		56.15 ± 1.80^g		89.75 ± 1.24^h		89.10 ± 0.78^h
700	57.82 ± 1.45ⁱ		63.94 ± 2.87^j		70.32 ± 2.20^k		91.42 ± 1.23^l		90.87 ± 1.20^l
800	62.64 ± 1.53^m		70.92 ± 1.81ⁿ		84.60 ± 1.67^o		93.43 ± 1.11^p		91.79 ± 1.41^p
900	70.17 ± 1.40^q		76.48 ± 1.35^r		87.86 ± 1.76^s		94.47 ± 1.06^t		94.54 ± 1.02^t
	Inhibitory concentration media (IC₅₀)
	669.40 ± 0.85		667.05 ± 0.78 ^a		657.55 ± 2.33 ^ab		645.20 ± 11.03^b		652.25 ± 13.79^ab