Blueberries contain the highest content of antioxidants in fresh fruits, such as anthocyanins, vitamins C, E, A and B, as well as copper, selenium and zinc, which can enhance immunity and antibacterial, and iron, which can increase the concentration of heme and oxygen in blood to enhance immunity.

Eating blueberries enhances immunity and can prevent colds, fever, nasty viruses and bacterial-related infectious diseases.

Prevent aging

Blueberries are rich in anthocyanins and vitamin C, which makes blueberries have super antioxidant capacity, can neutralize free radicals that affect human health and aging, make your body healthier and prevent aging.

Reduce abdominal fat

If you love beauty, just eat blueberries. According to a new study by the Cardiovascular Center of the University of Michigan, blueberries help to reduce abdominal fat and reduce the risk of cardiovascular disease and metabolic syndrome.

They experimented with mice. Some mice eating blueberry concentrated powder reduced abdominal fat, triglyceride and cholesterol, improved hyperglycemia and insulin sensitivity, and greatly reduced body fat weight and liver weight. Another related study also pointed out that people at risk of heart disease can slightly improve their blood sugar and insulin control if they drink wild blueberry juice for three weeks.

4. contribute to the health of urinary system

There is a kind of Escherichia coli (b-coli) colonized in the inner layer of urethra, which can cause urethral inflammation, burning sensation when urinating, and other complications. Blueberries have antibacterial properties, and at the same time contain a compound composed of heavy molecules, which can inhibit the growth of these bacteria, and this heavy molecule can also flush these bacteria out of the urethra to prevent infection.

5. Keep your eyesight.

Rich anthocyanins can be extracted from blueberries. Clinical studies have found that these anthocyanins can slow down vision loss and prevent or delay eye-related diseases, such as macular degeneration, cataract, myopia, hyperopia, dry eye, infection, etc., especially diseases related to retina.

Blueberries contain special antioxidants called carotenoids (lutein, zeaxanthin, etc. ), flavonoids (such as rutin, quercetin, etc. ), as well as vitamins C, E and A, selenium, zinc and phosphorus, all of which are beneficial to the health of eyes.

Enhance one's brain power

Anthocyanins, selenium, vitamin A, vitamin B, zinc, sodium, potassium, copper, magnesium, phosphorus and manganese in blueberries can prevent the aging and death of neurons and brain cells, and also restore the health of the central nervous system, thus achieving the purpose of preventing and treating nervous system diseases.

Blueberries can even help improve nervous system-related diseases, such as Alzheimer's disease or damaged brain cells and nerve tissues, and maintain a keen memory for a long time. Researchers have found that eating more blue mold can greatly improve the learning and memory ability and motor skills of elderly animals, and make people's thinking younger.

7. Prevention of heart disease

Blueberries are rich in cellulose, antioxidants and cholesterol, which makes them an excellent supplementary food for preventing heart disease and strengthening heart muscle. In a report published in the Journal of Agricultural and Food Chemistry, scientists measured the amount of antioxidants that can eliminate free radicals in alcohol. The average amount of white wine (about four ounces) is 0.47 mmol, red wine is 2.04 mmol, and the content of wine brewed with blueberries is as high as 2.42 mmol.

8. Improve constipation and help digestion

Blueberries are rich in cellulose, which can improve constipation. Of course, a small amount of blueberries is ineffective, so you must eat more. Vitamins, sodium, copper and fructose in blueberries can improve the digestive ability of human gastrointestinal tract.

9. Cancer prevention

Blueberry is good news for cancer patients, because it contains compounds similar to pterostilbene, which has an excellent preventive effect on colon cancer and liver cancer, and also contains ellagic acid, anthocyanins and other antioxidants, such as vitamin C and copper, which have a good effect on preventing cancer.

The practice of blueberry yam

Preparation method of blueberry yam 1;

Blueberry yam ingredients preparation: yam, blueberry sauce.

Method step

1. Peel and cut the yam into sections, and then cut into small strips;

2. Boil the water in the pot, add yam after the water is boiled, cook for another 2 minutes, then take it out and let it cool;

3. Put the bar code of cold yam into the dish;

4. Blueberry sauce can be diluted with water and drenched on yam strips.

skill

After peeling yam, you can soak it in water with a little vinegar to avoid blackening.

The practice of blueberry yam 2:

Blueberry yam ingredients preparation: yam, blueberry sauce, rock sugar.

Method step

1, put on gloves to peel the yam, and then clean it;

2. Pour the water into the steamer. After the fire boils, add yam and steam for about 15 minutes until the yam becomes soft and slightly cool.

3. After the yam is warm, put it in a bowl and press it into a delicate mud with a spoon;

4. Pour clear water into a small pot, add blueberry sauce and crystal sugar, boil over high fire, and continue to cook over low fire until blueberry sauce and clear water become sticky, then pour out and cool;

5. Finally, according to personal preference, put the mashed yam into the dish and drizzle with blueberry sauce.

skill

Peeling yam without gloves will make your fingers itch.

The practice of blueberry yam 3:

Blueberry yam ingredients Prepare yam, salt, milk, honey and blueberry sauce.

Method step

1. Wash yam, steam it in a pot for half an hour, peel it while it is hot, and then grind it into mud;

2. Add a small amount of salt and milk into the yam mud, mix well and knead into a ball;

3. Add honey to blueberry sauce and mix well with a little cold water;

4. Pour the prepared blueberry honey sauce on the yam mud pill.

skill

Yam will not itch after it is steamed and peeled.

How to eat blueberries

The color of fresh blueberries is blue, and the juice is fragrant, but how to eat it?

Blueberries are rich in anthocyanins and are easily damaged by heat. It is recommended to eat raw, not heated.

Fresh blueberries must be washed with clear water before eating. When eating, don't eat one by one, but put three or four in your mouth.

Although blueberries grow on the same tree and are the same bunch of blueberries, each one has a different ripening time. So each blueberry has different sweetness and sour taste according to its maturity.

Eat three or four at a time, you can mix all kinds of flavors together, and you can taste the real "taste" of blueberries.

The quality and flavor of blueberry will not be destroyed even if it is frozen, and the pulp tissue and composition structure will not be destroyed even if it is frozen.

The blueberries taken out of the freezer will be eaten in a minute or two, and taste as cold and refreshing as fresh blueberries.

Frozen blueberries should not be completely thawed before eating, otherwise they will lose their flavor and taste completely.

Common eating methods

1, add yogurt (or honey, sugar, orange juice) and eat directly: take more than 20 blueberry fruits, add 1 cup yogurt (or appropriate amount of honey, sugar, orange juice) and soak 10 minute.

2. Add yogurt (or honey, sugar and orange juice) to make slurry. Eating: Take 3-5 teaspoons of blueberry fruit, add 1 cup yogurt (or appropriate amount of honey, sugar, orange juice), add appropriate amount of cold boiled water, and use a blender to make it into slurry. Drink 1 cup in the morning and evening.

3, directly add cold boiled water to make slurry, suitable for diabetics.

4. Self-made blueberry drink: Take a blueberry, wrap it in clean gauze, squeeze out the juice, add 10 times of water and appropriate amount of sugar to the juice, heat it, boil it, and put it in the refrigerator to cool it before drinking. Taste sweet and sour, natural fragrance, appetizing and healthy. 5, sugar mixed with blueberries: add the right amount of sugar to blueberries, mash, and mix well to eat. Sugar-mixed blueberries are sweet and sour, and can also relieve alcohol.

6. Homemade blueberry sauce: prepare 1.5 cups of blueberries, 1 glass of water mixed with half a cup of sugar, 1 teaspoon of fresh lemon juice. Pour the sugar water into a small saucepan and cook until it is paste. Add blueberries and lemon juice and heat over low heat until blueberries crack and soften. Then pour it into a blender and stir until it becomes muddy, and then cool and store it. You can spread blueberry sauce on bread or steamed bread, or you can eat it with cream.

7. Blueberry ice cream: Put the blueberries in a big glass, take a box of ice cream, naturally soften it into a paste, pour it into the cup, and mix it with the blueberries with an ice cream spoon, and serve. Blueberry ice cream is sweet and sour, refreshing and pleasant, which can relieve summer heat and improve eyesight.

Note: Fresh blueberries have the function of relaxing bowels, so don't eat them when you have diarrhea.

How to wash blueberries?

1. Rinse gently with clear water: The best way is not to destroy the white powder on the fresh blueberry skin to the maximum extent. Just gently rinse with a little water to wash off the dust on the surface. Only in this way can the fruit powder on the peel of blueberry fresh fruit be preserved, because the high-value nutrients such as anthocyanins contained in the fruit powder and peel are the most abundant.

Soak in salt water, then rinse, and finally soak in water. Soak fresh blueberries in water for ten minutes. Stir by hand several times during soaking, and then rinse with water. Or you can soak it in salt water, then rinse it, and finally soak it in water.

2, wild blueberries can be soaked in water to eat: wild does not need to be cleaned, it is cleaner. Soak the planted plants in water for ten to eight minutes, stir them by hand several times, and then switch back to water for washing.

How to preserve blueberries

1. Fresh blueberries should be kept at a low temperature below 10, even during transportation. However, if the fruit temperature drops from the field to below 10, it must be precooled to remove the heat of the fruit in the field, so as to effectively prevent rot. Pre-cooling methods mainly include vacuum cooling, cold water cooling and cold air cooling.

vacuum cooling

Vacuum cooling is a way to cool fruits by evaporating surface moisture. This method has a fast cooling speed and can be completed in 20~30 minutes.

Cold water cooling

Soak or spray with cold water. Compared with cold air cooling, this method is more efficient and faster, but it is easy to cause fruit corruption.

Cold air cooling

That is, the way to make cold air in the freezer to cool the fruit. It is of great use value to cool fruits in this way. It can be divided into forced cooling and differential pressure cooling. Forced cooling means that cold air is forced into the pre-cold storage, but the cooling speed is slow when there is an outer packaging box. In order to realize heat exchange as soon as possible, holes can be punched in the outer packaging. Press differential cooling holes on both sides of all outer packing boxes in the pre-cooling room, and use forced cold air to introduce cold air into the boxes to achieve the purpose of rapid cooling.

2. Frozen storage

After the fruits are harvested, classified and packaged, they can be frozen and stored and processed into frozen fruits. Quick-frozen fruits can effectively control rot and prolong storage period, but the flavor of raw fruits is slightly sour. The freezing temperature should be lower than -20℃. The packaging dimensions of polyethylene bags are 10kg and 13.5kg, and freezing conditions are also required during transportation.

Processing frozen fruits is a trend of berry utilization. Blackberry, raspberry and strawberry can be processed into frozen fruits, but the above three berries are easy to change color and crack when frozen, while blueberry fruits are not. Compared with strawberry, raspberry and other fruits, blueberry fruit is hard and suitable for frozen fruit processing.