Phenolic compounds and antioxidant properties of roasted maize-peanut product (Zowey) and its potential to alleviate oxidative stress

Table 2.

Flavonoid content of acidified methanol extract (µg/g sample dry weight basis) of cereal flours, legume flours andtheir composites product

Sample Maize flour Roasted Maize Flour Peanut flour Roasted Peanut flour Roasted Peanut flour (with spices) Maize-peanut snack Maize-peanut snack (with spices)

Acidified methanol extract
Catechin ND ND 169.53 ± 0.02 462.65 ± 1.11 489.55 ± 0.72 232.95 ± 0.52 224.05 ± 0.30
Rutin 280.41 ± 0.28 138.50 ± 0.09 ND 111.75 ± 0.27 121.33 ± 0.29 74.54 ± 0.41 95.94 ± 0.04
Quercetin ND 136.38 ± 0.20 757.61 ± 0.31 1865.43 ± 1.92 2123.92 ± 2.04 760.67 ± 0.02 774.19 ± 0.13
Kaempferol 5.05 ± 0.21 11.73 ± 0.10 ND 4.19 ± 0.03 6.03 ± 0.01 8.07 ± 0.01 9.54 ± 0.06
Naringenin 18.33 ± 1.37 21.10 ± 0.11 1.15 ± 0.08 12.09 ± 0.01 15.02 ± 0.02 15.64 ± 0.03 17.76 ± 0.05
Apigenin 13.25 ± 1.19 ND ND 2.47 ± 0.11 2.71 ± 0.06 ND ND

Saponified residue
Catechin   ND   ND ND ND ND
Rutin   135.11 ± 0.12   582.76 ±1.99 79.82 ± 0.62 97.35 ± 0.15 60.83 ± 0.15
Quercetin   368.89 ± 0.91   1420.13 ± 2.03 943.19 ± 2.83 214.24 ± 0.16 98.18 ± 0.15
Kaempferol   92.55 ± 0.05   ND ND 23.86 ± 0.02 ND
Naringenin   267.68 ± 0.49   10.12 ± 0.25 1.26 ± 0.03 103.31 ± 0.12 53.17 ± 0.11
Apigenin   ND   ND   ND ND