What does antioxidant mean? Antioxidant is the abbreviation of antioxidant free radical. Due to the constant contact with the outside world, including breathing (oxidation reaction), external pollution, radiation exposure and other factors, free radicals are constantly produced in the human body. Scientific research shows that cancer, aging or other diseases are mostly related to the production of excessive free radicals. The research on antioxidation can effectively overcome its harm, so antioxidation is listed as one of the main research and development directions by health care products and cosmetics enterprises, and it is also one of the most important functional requirements in the market.
Antioxidant is any substance that can effectively inhibit the free radical oxidation reaction at low concentration. Its mechanism of action can be directly acting on free radicals or indirectly consuming substances that are easy to produce free radicals to prevent further reactions. When the human body inevitably produces free radicals, it also naturally produces antioxidant substances that resist free radicals to offset the oxidative attack of free radicals on human cells. Studies have proved that the human antioxidant system is a perfect and complex system comparable to the immune system. The stronger the antioxidant capacity of the body, the healthier it is and the longer its life span.
Antioxidant foods Which green teas contain catechins and epicatechin? They are all good antioxidants. They can improve the activity of superoxide dismutase and scavenge free radicals. On the one hand, it can resist aging, on the other hand, it can lose weight, killing two birds with one stone. In addition, it can also reduce cholesterol in plasma, reduce arteriosclerosis and reduce cardiovascular diseases. Theophylline and caffeine contained in green tea can activate protein kinase and triglyceride decomposing enzyme, reduce the accumulation of fat cells and achieve the effect of losing weight.
Salmon is the only meat food in Time magazine in the United States, which belongs to antioxidant substances. Mainly because it contains ω-3 (polyunsaturated fatty acids), which has a strong antioxidant effect. However, the high proportion of meat hamburgers and fatty acids in general poultry or livestock will affect their antioxidant function. Like salmon, it contains a lot of omega-3 cod liver oil, which is also very helpful for cardiovascular and cerebrovascular diseases.
Nut foods (peanuts, walnuts, cashews, pine nuts and hazelnuts) are rich in vitamin E, which not only has antioxidant function, but also protects tissues and cells from damage. Vitamin E is also a natural preservative, but it must be noted that nuts contain high fat, which is not conducive to antioxidant effect, but will increase the burden on the body. Therefore, the intake of nuts should be moderate and not excessive.
Oats are rich in protein, calcium, riboflavin and thiamine. Oat is the only food in the whole grain that is on the list of the top ten antioxidants. Eating a proper amount of oats every day can accelerate human metabolism and amino acid synthesis, promote cell renewal, and reduce cholesterol and hypertension. It is an advanced grain and can be eaten frequently.
What are the antioxidant nutrients? Vitamin a: yellow fruits such as oranges; Vegetables such as carrots and pumpkins; Fish etc.
Vitamin C: fruits (especially citrus fruits); Green leafy vegetables such as broccoli and cauliflower; Berries such as strawberries, blueberries and raspberries; Potatoes and sweet potatoes.
Vitamin e: nuts, seeds, avocados, vegetable oil, fish oil, etc.
Selenium: Brazilian fruit, tuna, cabbage, etc.
Zinc: pumpkin, sunflower seeds, fish, almonds, etc.
What fruits and lemons do antioxidants eat?
Lemon contains vitamin B 1, vitamin B2, vitamin C and other nutrients. In addition, it is rich in organic acids and citric acid, which has a strong antioxidant effect and is very effective in promoting skin metabolism, delaying aging and inhibiting pigmentation.
grape
Grape contains a lot of grape polyphenols, which have antioxidant function, can block the proliferation of free genes and effectively delay aging; It also contains tannic acid and citric acid, which has a strong astringency and a soft and moisturizing effect. In addition, grape pulp contains vitamin B3 and rich minerals, which can deeply moisturize, resist aging and promote skin cell regeneration.
Chinese olive
Olive trees can extract skin care essence from leaves and fruits. Olive leaf extract helps skin cells resist oxidation caused by pollution, ultraviolet rays and pressure, while olive fruit contains another powerful antioxidant phenolic compound, which can provide double antioxidant repair when combined with oleuropein.
shaddock
Studies have confirmed that the smell of grapefruit can make women look 6 years younger than men on average. Now, a kind of citric acid contained in grapefruit has been widely used in the field of skin care. This ingredient can help the metabolism and excretion of dead skin cells, thus making the skin smooth and shiny again.
Red pomegranate
Delicate pomegranate has been proved to have strong antioxidant effect. It contains an ingredient called ellagic acid, which can protect cells from environmental pollution and ultraviolet rays, nourish cells and slow down body aging. Studies have shown that ellagic acid is more "powerful" in radiation protection than polyphenols contained in red wine and green tea.
cherry
Cherry juice is the favorite of many whitening products, which can help facial skin become tender and ruddy, wrinkle-free and spot-free. Cherry is not only rich in vitamin C, but also extremely rich in iron, which is 13 times that of hawthorn and 20 times that of apple. In addition to high iron content, it also contains vitamin A, which can balance cortical secretion, delay aging, and help activate cells and beautify skin.
What vegetables and carrots do you eat to resist oxidation?
Carrots are rich in pectin, which can combine with mercury, so that harmful components in the human body are discharged, and the skin looks more delicate and ruddy. It contains beta carotene, which can resist oxidation, whiten skin, prevent melanin precipitation and remove excess keratin from skin. It also contains vitamin E, which is indispensable for anti-oxidation.
cucumber
Cucumber is rich in various sugars and amino acids necessary for human growth, development and life activities, as well as rich vitamins, which provide sufficient nutrition for skin and muscles, effectively resist skin aging and reduce wrinkles. Rich in fruit acid, it can clean and whiten skin, eliminate sunburn and freckles, and relieve skin allergies.
Purple sweet potato
Purple potato, also known as black potato, is a kind of potato product with purple or even deep purple flesh. Besides the nutrients of common sweet potato, it is also rich in selenium and anthocyanins. Anthocyanin contained in purple sweet potato is a powerful free radical scavenger and a natural antioxidant, which can resist oxidation and prevent skin aging.
Cauliflower
The beautiful cruciferous cauliflower is rich in vitamins A and C, minerals such as potassium, calcium and selenium, beta carotene and fiber, and has low calories. Eating more can enhance resistance and reduce the risk of cardiovascular disease and several cancers. In addition, it also contains a unique antioxidant, which contains almost all antioxidants. Therefore, its antioxidant performance is superior to other foods, and it is also an anti-cancer star. Therefore, we must not miss this vegetable that defends youth.
spinach
Spinach is rich in beta carotene and vitamin C, so it is also among the top ten antioxidant foods. In addition, it also contains minerals such as iron, potassium and magnesium and folic acid, so it can effectively lower blood pressure and cheer up the mood. However, it should be noted that it is best to blanch spinach with boiling water and filter oxalic acid to avoid stones.
tomato
Among antioxidant foods, tomatoes are the most powerful weapon against aging. This is because tomatoes are rich in lycopene, and the antioxidant capacity of lycopene is 20 times that of vitamin C, which can be said to be super antioxidant fighting capacity.
Antioxidant recipes recommend broccoli and bean crisp cod.
Ingredients: cod 1 piece, broccoli, ginger, garlic.
Seasoning: Douchi, salt, monosodium glutamate, cooking wine, sugar, pepper, salad oil.
Exercise:
1. Cod is marinated with proper amount of salt and cooking wine, then steamed in a cage for 8- 10 minutes, and taken out for later use.
2. Put oil in the pan, add chopped green onion, Jiang Mo and fermented soybean, and then season with salt, monosodium glutamate and pepper. After the lobster sauce is fried, pour it on the processed cod.
3. Broccoli is boiled in salt water and coded around cod.
Golden tofu
Ingredients: tofu, salted egg yolk, chives.
Seasoning: salt, monosodium glutamate, pepper, salad oil.
Exercise:
1, diced tofu, blanched with salt water, picked up and put on a plate.
2. Put the oil in the pot, add the salted egg yolk and stir fry, and add appropriate amount of salt, monosodium glutamate and pepper to stir fry 1 min. Pour the fried egg yolk on the processed tofu and sprinkle a little chopped green onion.
Onion and Seafood Soup
Ingredients: onion, fresh squid, fresh shrimp, crab roe, straw mushroom and eggs.
Seasoning: salt, monosodium glutamate, pepper, cooking wine, clear soup.
Exercise:
1. Beat the eggs, add salt, monosodium glutamate, pepper and clear soup, mix well, steam them in the drawer and take them out for later use.
2. Cook the chopped green onion, straw mushroom slices and seafood segments respectively, pick them up and put them on the steamed eggs.
3. Put clear soup in the pot, season with salt, monosodium glutamate, pepper and cooking wine, boil it and pour it on seafood and custard.
Many people will spend a lot of money on expensive health care products or skin care products to resist oxidation. In fact, many foods we usually eat have good antioxidant effects, so as long as we eat more of these foods at ordinary times, we can have a good antioxidant effect.