Cereals are commonly consumed for breakfast in the developed world. They are good sources of antioxidants, especialy the bran and germ parts.

Researchers in the US evaluated the antioxidant content of ready to eat breakfast cereals from the General Mills brand and found in US supermarkets.

They reported that whole-grain-wheat- and oat-based products had on average higher antioxidant content than products from refined rice or corn ingredients. Regardless, all breakfast cereals are good sources of antioxidants, comparable to common fruits and vegetables.

Antioxidant Content of Breakfast Cereals

Antioxidant Sources Antioxidant Content (µmoles TE/100 grams)
Multi-Bran Chex® 3900
Basic 4® 3600
Crispy Wheaties ’N Raisins®2 3500
Raisin Nut Bran® 3100
Wheat Chex®2 3000
Whole Grain Total®2 2800
Wheaties®2 2800
Multigrain Cheerios®2 2700
Oatmeal Crisp/Raisin®2 2700
Apple Cinnamon Cheerios® 2700
Cheerios®2 2600
Honey Nut Cheerios® 2200
Oatmeal Crisp/Apple Cinnamon®2 2200
Country Corn Flakes® 2000
Corn Chex® 1600
Kix® 1400
Rice Chex® 1300

All products were about one month old when analyzed. All the products are General Mills brand. TE = Trolox Equivalents. The Antioxidant content was measured by  DPPH method.  Samples with 2 mark on them are whole grain products.

Reference:

Harold E. Miller, Fred Rigelhof, Leonard Marquart, Aruna Prakash, and Mitch Kanter. 2000. Antioxidant Content of Whole Grain Breakfast Cereals, Fruits and Vegetables. Journal of the American College of Nutrition, Vol. 19, No. 90003, 312S-319S.