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ORAC index: a measurement of the antioxidant power of foods
Antioxidants are substances present in foods, considerably more in those of plant origin. 
, which delay natural aging in our body 
. As their name indicates, they prevent oxidation processes from occurring in the body and certain damage to cells.
There are various types of antioxidants, among which polyphenols (including flavonoids and tannins), lutein, lycopene, vitamin A, C (ascorbic acid) and E stand out, which can be recognized by the red pigmentation, orange, green, purple, or others, present in foods.
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In order to measure the antioxidant capacity of a food, there is a measurement of the oxygen radical absorption capacity (ORAC). What is done is subjecting the food to an oxidizing agent, to measure its ability to resist oxidation. 
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Although its results may vary depending on the laboratory that carries out the study, it is estimated that it is the most reliable analysis of its type, being used by the US Department of Agriculture (USDA). It is also important to know that some powdered foods will have a higher score due to their absence of water. 
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Some of our superfoods that have been measured with the ORAC index are Ceylon cinnamon , cocoa , ginger , rosehip and maqui , being above several widely consumed foods and also rich in antioxidants. 
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