Antioxidant is a molecule that slows and prevents Free Radical damange (oxidation) in your body.
Role of antioxidants in the body system was first discovered in unsaturated fats to prevents rancidity (rancidity is the process in which the chemical of oils and fats is decomposed). Only then the discovery of antioxidant in vitamins. For vitamin A, C & E the role of antioxidant in biochemistry was being realized.
Free radicals is the by-product of oxygen in our body. Oxygen is essential in our body. But we are exposed to free radicals that are harmful to our body. Free radicals often resulted from smoking, too much alcohol drinking, too much exposure from sunlight and exposure from heavy metals such as mercury.
The following are the roles and importance of antioxidant in our body:
- Neutralises the effect of free radical
- Slows down skin ageing
- Slows down ageing
- Slows down disease
Here is a table of different types of Antioxidant and the Source of Food
| Different types of Antioxidants & Source of Food | |
Flavonoids
| |
| Flavones | Parsley |
| Celery | |
| Lemon and orange zest (peel) | |
| Isoflavones | Soy beans |
| Soy beverages | |
| Tofu | |
| Miso | |
| Flavanols (including catechins and proanthocyanidins) | Catechins |
| Green and black tea | |
| Dark chocolate | |
| Black grapes | |
| Red wine | |
| Proanthocyanidins | |
| Grapes | |
| Peaches | |
| Apples | |
| Pears | |
| Berries | |
| Chocolate | |
| Flavanones | Citrus fruits |
| Mint | |
| Flavonols | Apples |
| Onions | |
| Blueberries | |
| Leeks | |
| Kale | |
| Broccoli | |
| Cherry tomatoes | |
| Anthocyanins | Purple and dark red foods such as prunes, blueberries, blackberries, black grapes, cranberries, cherries, eggplant and radishes. |
| Red wine | |
| Wholegrains | |
| Isothiocyanates | |
| Sulphoraphane | Broccoli |
| Cabbage | |
| Cauliflower | |
| Horseradish | |
| Phenolic acids | |
| Caffeic acid, ferrulic acid | Blueberries |
| Kiwi fruit | |
| Plums | |
| Cherries | |
| Apples | |
| Pears | |
| Coffee | |
| Wheatgerm | |
| Bran | |
| Sulphides | |
| Various allyl sulphides | Garlic |
| Onions | |
| Leeks | |
| Vitamins | |
| Vitamin C | Fruits |
| Vegetables | |
| Folate | Green leafy vegetables |
| Avocado | |
| Salmon | |
| Fortified cereals and breads | |
| Beta carotene | Orange and green fruits and vegetables |
| Vitamin E | Wheat germ |
| Sunflower and other seeds | |
| Nuts | |
| Vegetable oils | |
| Minerals | |
| Selenium | Brazil nuts |
| Wholegrains | |
| Seafood
| |
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