There are two kinds of nuts: tree nuts and seeds. Hazelnuts, walnuts, almonds and cashews are all tree nuts.
That is, plant essence is rich in unsaturated fatty acids such as linolenic acid and linoleic acid, dietary fiber, vitamin B, vitamin E and trace elements such as phosphorus, calcium, zinc and iron.
Lowering blood lipid of hazelnut
Among the "four big nuts", hazelnut has not only been eaten for the longest time, but also has the highest nutritional content, so it has the title of "king of nuts". In China's Book of Songs, there are records of people eating hazelnuts. During the Ming and Qing Dynasties, hazelnuts were even court nuts. Eating hazelnuts was also a very popular thing in ancient Europe. They have been planting hazelnuts for 700 years.
At first, people only regarded hazelnut as a good natural food, but with the deepening of its research, people found that it played an important role in health. Bohlander University found in the experiment that hazelnut contains strong anticancer components, which have a good inhibitory effect on ovarian cancer, yellow information, adenocarcinoma and other cancers, and can prolong the life of patients for nearly one year. In addition, the content of magnesium, calcium, potassium and other trace elements in hazelnut is very high, and long-term consumption is helpful to regulate blood pressure.
In Turkey, the main producing area of hazelnut, it can not only be eaten alone, but also be an indispensable match in all kinds of cakes, ice cream, chocolate and other sweets. Turks mainly eat meat, and barbecue or barbecue is the most important food. However, a strange phenomenon is that most Turks have normal blood lipid indexes and have not harmed their health because of eating meat. Researchers at Istanbul Medical University in Turkey explained that this is because hazelnut has the function of lowering cholesterol, which can avoid the harm of saturated fatty acids in meat to the body and effectively prevent cardiovascular and cerebrovascular diseases.
Many people think hazelnuts are easy to get bored if they are eaten too much. In fact, it has natural aroma and appetizing effect, and its rich cellulose also helps digestion and prevent constipation. For white-collar workers who work in front of a computer every day, eating more nuts such as hazelnuts can enhance the chewing ability of facial muscles, thus improving their eyesight.
At present, there are two kinds of hazelnuts in dried fruit shops: small hazelnuts (including hairy hazelnuts and hazelnuts) and imported big hazelnuts. Hazelnut tastes good and smells pure. The roots of Corylus heterophylla are slightly protruding, arc-shaped, and the nuts are sweet; Corylus heterophylla has smooth roots and sweet nut flavor; Hazelnuts are mostly imported from Turkey or the United States, with good color and big size, but light taste.
Hazelnut can be eaten raw or fried. Crush nuts and put them in when making cakes, or add them to milk, yogurt and ice cream to make hazelnut yellow messages. Please delete hazelnut fat, etc. This is also a very good way to eat. In addition, hazelnuts can also be used to cook porridge: hazelnuts, lotus seeds and japonica rice are put together to make "hazelnut porridge", which is not only delicious, but also nutritious, and patients with cancer and diabetes can drink more at ordinary times.
Because hazelnuts are rich in oil, people with severe gallbladder function should eat less at ordinary times. According to a study by Spanish scientists, the average person eats five times a week, 25 times each time? 30 grams of hazelnut is more suitable.
Walnuts can be used for beauty.
Contains a variety of vitamins and can "moisturize and blacken hair".
Walnut is called "longevity fruit" in China, and "educational fruit" abroad. Since ancient times, it has been considered as the most suitable nut for mental workers.
According to historical records, as early as the imperial examinations in Sui and Tang Dynasties in China, tired and nervous candidates ate walnuts to strengthen their brains. In Japan, nutritionists have found that children who eat walnuts every day will greatly improve their anxiety and weariness of learning. Studies have proved that this is because walnuts contain high phospholipids, which can maintain normal cell metabolism, prevent the decline of brain cells, improve the physiological function of the brain, promote brain circulation, enhance memory and alleviate excessive brain use.
In addition to strengthening the brain, the beauty function of walnuts has been paid more and more attention in recent years. Chinese medicine believes that walnuts have the function of "moistening skin and blackening hair"; Modern nutrition believes that the multivitamins contained in walnuts can improve the physiological activity of the skin. Drinking walnut porridge that is easy to digest and absorb at ordinary times can make your skin more tender and your complexion more moist.
In addition, the contents of linoleic acid and linolenic acid in walnut are 65% and 18% respectively. These unsaturated fatty acids, like other nuts, can regulate cholesterol metabolism and are very helpful for patients with arteriosclerosis and cardiovascular and cerebrovascular diseases. There are many varieties of walnuts. According to the smoothness of the shell, there are light walnuts and hemp walnuts. Light walnuts are easy to take kernels, and the kernels are full, sweet and not astringent; Walnut has high oil content. According to the shell thickness, there are thin-shell walnuts and thick-shell walnuts. There is also a kind of pecan on the market, which is relatively small and has the same nutritional value as ordinary walnuts, but tastes more fragrant. Among walnuts, one kind of black walnut originated in North America has the highest nutritional value, but its stone is hard and its kernel rate is very low. In the United States, the price of black walnut kernel is more than four times higher than that of ordinary walnut kernel. At present, it is also produced in China, but the output is very small.
In eating, many people who eat walnuts alone will feel bitter. Cooking, steaming, stewing, frying, or preparing cakes and sweets can appropriately reduce the astringency. In collocation, walnuts and boiled porridge such as barley and chestnuts can cure frequent urination; Eating sesame seeds and lotus seeds together has a better effect of nourishing the heart and strengthening the brain. But people who are getting angry or diarrhea should pay attention, and it is best to eat less.
Beware of allergies when eating cashews.
Cashew nuts are mainly produced in Mozambique, Africa, and also cultivated in Hainan and Yunnan, China, but in small quantities. Dried raw cashews 2? After 3 days, the water content dropped to a certain extent, then dried, and we ate cashew kernel.
Compared with other nuts such as hazelnuts, walnuts and almonds, cashews are characterized by high sugar content, accounting for about 25% of the total nutritional components, while the sugar content of hazelnuts is 15%, that of almonds is 10% and that of walnuts is only 8%. So cashews have a slightly sweet taste before processing.
The fat content of cashew nuts is 47%, and the protein content is 22%. In addition, it also contains vitamins and trace elements such as zinc, calcium and iron. The fat contained in cashew nuts is mostly unsaturated fatty acids, among which linoleic acid and linolenic acid can prevent arteriosclerosis, stroke and other diseases. However, compared with other nuts, the content of saturated fatty acids in cashew nuts is slightly higher, accounting for about 20%. Among the four nuts, the saturated fatty acid content of walnut is the lowest, only 6%, almond is 10%, and hazelnut is 7%. Therefore, the consumption of cashew nuts must be properly controlled to avoid eating too much.
In addition, cashews contain a variety of allergens, which may cause certain allergic reactions to people with allergies. Therefore, people who eat cashews for the first time, it is best not to eat more, but to eat one or two tablets first and then stop for more than ten minutes, and then eat without allergic reaction.
Almonds contain more calcium than milk.
Almond is not only a nutrient-intensive nut, but also rich in unsaturated fatty acids, vitamins and minerals such as calcium and iron. In many cultures, it is also a representative of romance and health. Chinese medicine also believes that it can moisten the lungs and dispel dryness, especially suitable for cold and dry winter.
Vitamin E rich in almonds means "newborn baby" in Greek. Therefore, the Romans like to throw almonds at the newlyweds and send them good wishes. According to research, the average life expectancy of Himalayan people is 90? Between 65438 and 000 years old, it also has a lot to do with their habit of eating almonds in life. Fu Rui, Taft University? Dr. Bruberg believes that almond's longevity is not only because it is rich in unsaturated fatty acids and vitamin E like other nuts, but also because of its high selenium content.
The content of selenium in almonds is the highest among all kinds of nuts. Studies have shown that selenium is a trace element with strong anti-cancer ability. In addition, it is a nonmetallic ion with negative charge, which can combine with metal ions with positive charge in human body and discharge metal ions such as lead, mercury and cadmium that induce diseases. Therefore, selenium is also called "natural antidote". The combination of selenium and vitamin E in almonds can play a better role in scavenging free radicals, preventing diseases and resisting aging. This is why eating almonds has a certain relationship with longevity.
In addition, the content of other minerals in almonds is also high, such as calcium, which is twice as high as milk that is generally considered to contain calcium.
At present, 80% of the world's almonds are produced in California. These almonds are bigger and can be eaten directly. Most almonds produced in China are small in size, and one kind of flat almond has higher nutritional value than ordinary almonds.
Almonds can meet the needs of people of all ages, so there are not too many restrictions on consumption. Generally speaking, eat almonds twice a week, one handful (30 grams) each time, about 20? 25 tablets, long-term adherence, the risk of heart disease or coronary heart disease will be reduced by 50%.
In addition, it should be noted that the content of antioxidant components in almond skin is very high, so it is best not to peel it when eating. . . .