Many foods contain a lot of hydrous compounds, especially fruits. Vegetables containing water usually contain a lot of carbohydrates. Foods with more substances are easier to digest and nutrients are easier to be absorbed.
The only food completely free of carbohydrates is pure vegetable oil. The following foods contain no more than 10g of carbohydrates, so they are classified as non-carbohydrate foods.
Fruits include: orange, strawberry, grapefruit, raspberry, cantaloupe, cherry, kiwi, coconut, orange, papaya, peach, plum, watermelon, lemon and so on.
Vegetables include: cucumber, broccoli, pumpkin, pepper, coriander, leek, white radish, carrot, lettuce, celery, spinach, bean sprouts, tofu, tomatoes, zucchini and so on.
Food without carbohydrates
2. What are carbohydrates?
Carbohydrate is a large class of compounds composed of carbon, hydrogen and oxygen, and it is the most abundant organic matter on the earth. Foods containing more carbohydrates are generally cheaper; Moreover, carbohydrates are oxidized faster in the body and can supply energy in time to meet the needs of the body.
Therefore, carbohydrates are the most economical and main source of energy intake for most people. They are also an important part of the body, which are closely related to the normal metabolism of some nutrients in the body and have important physiological functions.
3, the role of carbohydrates
3. 1, supply heat energy. Sugar is the main source of heat energy, and every 1g carbohydrate can provide 16.7kJ of heat energy. It is characterized by its large proportion in the total energy, rapid and timely energy supply, and the final products of oxidation are carbon dioxide and water, which are harmless to the body.
3.2, detoxification. The level of glycogen in the liver is of great significance to the human body's resistance to poisons and detoxification of certain chemicals. If the human body is rich in liver sugar, it has strong resistance to diseases, and at the same time, it has strong resistance to carbon tetrachloride and ethanol. Toxic substances such as arsenic have a strong detoxification effect.
3.3. Save protein. Because the energy needed by the human body is mainly supplied by sugar, if the sugar supply is sufficient, it will not cause a lot of oxidation of fat in the body and produce too many ketone bodies, which will cause ketosis; It will not lead to excessive decomposition of tissue proteins and form a burden balance.
Food without carbohydrates
What's the difference between carbohydrates and sugar?
Sugar is called carbohydrate because it consists of three elements: carbon (C), hydrogen (H) and oxygen (O), in which the atomic numbers of hydrogen and oxygen are 2: 1, so sugar is usually called carbohydrate.
In fact, it is not rigorous to call sugar carbohydrate or substitute carbohydrate for sugar, because in the molecular formulas of some non-sugar substances, such as lactic acid and acetic acid, the ratio of hydrogen atom to oxygen atom is 2: 1, which also meets the requirements of carbohydrate naming.
So we can convert sugar into carbohydrates, but we can't equate carbohydrates with sugar at will, but this doesn't affect our customary names.
Food without carbohydrates
Can carbohydrates gain weight?
In many people's eyes, carbohydrates refer to starchy foods, such as bread, rice, potatoes or sugar and desserts. These are carbohydrates, yes, but carbohydrates also exist in foods that people think are healthy, such as fruits, vegetables, beans and whole grains. Therefore, it is wrong to classify all these foods together and claim that they will cause "obesity".
Is it true that carbohydrates in healthy foods will not make people fat, while carbohydrates in staple foods such as bread will lead to obesity? Experts believe that carbohydrates are not healthy or unhealthy, but they are highly differentiated. Some well-made foods, such as refined grains, bagged biscuit bread or other highly processed snacks, will contain a lot of calories, and they will not feel hungry when eaten. Therefore, they will not "get fat" after eating and eating.
Unprocessed vegetables, whole wheat bread, beans and fruits contain carbohydrates, but because they are rich in fiber and water, they can satisfy hunger better than fine foods and are not easy to gain weight.