Table 7. Antioxidant activities of cookies containing different amounts of aronia powder

Measurement	Wheat flour	Aronia powder	Cookies with aronia powder (%)
Measurement	Wheat flour	Aronia powder	0	2	4	6
DPPH radical scavenging activity (%)	12.38±2.35^f1)	72.65±1.10^a	23.57±1.51^e	32.44±2.11^d	52.25±1.02^c	64.07±1.27^b
ABTS radical scavenging activity (%)	4.36±0.61^f	68.52±0.28^a	14.71±0.37^e	30.83±0.90^d	43.40±1.59^c	58.03±1.26^b
Reducing power (absorbance at 720 nm)	0.08±0.00^f	1.03±0.01^a	0.14±0.00^e	0.15±0.01^d	0.22±0.001^c	0.24±0.00^b

values are mean±SD (n=3).
^a-fMeans with the same superscript letters within the same row are not significantly different at p<0.05.