Speaking of the most seasonal fruit in winter, it is none other than oranges. When winter arrives, the season for eating oranges is here, and the dazzling variety of oranges on the market is pleasing to the eye. “Yanzi Chunqiu·Miscellaneous Ten” records “Oranges born in Huainan are oranges, and those born in Huaibei are oranges”, indicating that our ancestors had already started cultivating orange trees in the Spring and Autumn and Warring States period.
It is also documented that the origin of citrus is in China, India, and Southeast Asia. Citrus is not a certain kind of fruit, but a general term for a type of fruit, including tangerine, pomelo, tangerine, orange, lemon, etc. The color ranges from yellow to orange to orange-red.
Citrus is vitamin C and
Representative food of carotene
The nutrient composition and content of citrus fruits are roughly the same. They are representative foods rich in vitamin C and carotene. On average, every 100 grams of citrus contains 890 micrograms of carotene and 28 mg of vitamin C.
Carotene can protect eyesight, protect the integrity of skin tissues, and improve immunity; vitamin C has antioxidant, improve immunity, and detoxification effects, and is effective for bleeding such as gum bleeding, subcutaneous spot hemorrhage, gingivitis and bone Porosity has a preventive effect, especially for preventing scurvy.
The content of fat and protein in citrus fruits is relatively low, and the content of carbohydrates is relatively high. Each 100 grams contains 0.7 grams of protein, 0.2 grams of fat, and 11.9 grams of carbohydrates. It is dominated by soluble sugars, mainly including sucrose, fructose and Dextrose, so ripe citrus is particularly sweet.
Citrus fruits contain a variety of dietary fiber, and pectin is the main form of it. This is also the reason why eating more fruits can prevent and relieve constipation. Citrus also contains B vitamins and calcium, phosphorus, magnesium, iron, zinc, selenium, etc. Trace elements required by the human body.
Flavonoids in citrus
Anti-tumor, anti-bacterial and anti-inflammatory
Citrus fruits are rich in 3 types of carotene, lutein, zeaxanthin and β-cryptoxanthin. Studies have shown that carotenoids can prevent the production of superoxide free radicals, improve the body’s immunity, prevent the growth of cancer cells, and prevent cardiovascular diseases.
Flavonoids are another biologically active substance in citrus fruits, which have the effects of anti-tumor, anti-bacterial, anti-inflammatory, reducing capillary fragility, anti-allergic, and inhibiting platelet aggregation.
One type of bitter substance contained in citrus fruits is limonin compounds, which explains why grapefruit and lemon have a bit of bitterness. Such compounds can inhibit liver cancer, small intestine cancer, oral cancer and skin cancer, and also have analgesic, anti-inflammatory, anti-anxiety and sedative effects.
Whether “getting hot” varies by species
Try to eat whole fruit and preserve dietary fiber
Citrus is a treasure in its entirety. The peeled skin of mature oranges is processed into a traditional Chinese medicine-tangerine peel, which can regulate qi, invigorate the spleen, and remove dampness and phlegm.
There is a saying among the folks that if you eat more oranges, it is easy to get angry. Modern medical experiments have found that the substance that causes getting angry is a pro-inflammatory protein that can cause the body to appear “red, swollen, hot, and painful.” However, not all citrus is easy to get angry if you eat too much. Depending on the variety, orange and pomelo even have the function of reducing fire.
Citrus edible parts account for 86.9% of water, so you can squeeze juice, such as orange juice, lemon juice, and orange juice. But in addition to lemons, try to eat the whole pulp, because the dietary fiber is basically removed during the juice extraction process, which can not achieve the effect of preventing constipation, and it is easy to consume excessive sugar.