Suggestion: The main food sources of carbohydrates are: sucrose, grains (such as rice, wheat, corn, barley, oats, sorghum, etc. ), fruits (such as sugar cane, melon, watermelon, banana, grape, etc. ), nuts and vegetables (such as carrots and sweet potatoes). ).
High quality refers to those high-quality foods containing carbohydrates such as starch and sugar, such as sugary fruits, starchy potatoes, sweet potatoes, corn and whole grains. Non-high-quality carbohydrates refer to refined grains, such as polished rice and flour, which are also rich in starch. Good food is rich in carbohydrates.
Carbohydrate consists of three elements: carbon, hydrogen and oxygen. Because the ratio of hydrogen to oxygen is two to one, which is the same as water, it is called carbohydrate. It is the cheapest of the three main nutrients that provide heat energy for human body. Carbohydrates in food can be divided into two categories: effective carbohydrates that people can absorb and utilize, such as monosaccharides, disaccharides, polysaccharides and ineffective carbohydrates that people can't digest, such as cellulose.
There are two kinds of effective carbohydrates, complex carbohydrates (starch in grains, beans and vegetables) and simple carbohydrates (fruits, milk and processed sugar). Our diet should include these two carbohydrates.