Dear sir, what should be the antioxidant intake per day to maintain a good health regime??

Fruits and vegetable: worry less about specific compounds and more about a health balanced diet - its all in there!

Moderation in everything: There is no standardized way of defining or measuring antioxidant intake. There is no FDA recommendation for antioxidant intake. Eating a good healthy and balanced diet, maintaining a good weight and exercising regularly is the best advice I can give you.