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1, sweet potato is rich in sugar, vitamins and minerals, dietary fiber, etc. Vitamins such as carotene and vitamin b 1 in sweet potato are necessary to maintain human health. The starch in sweet potato is mushy after heating, which makes the heat-labile and water-soluble vitamin C well protected. Among them, minerals play a very important role in maintaining and regulating human functions; Calcium and magnesium can prevent osteoporosis; Potassium can lower blood pressure. In recent years, more studies have said that sweet potato has the function of preventing cancer, so sweet potato is more expensive than rice.
2. Eggs are rich in high-quality protein, and each100g of eggs contains protein12.7g.. The protein contained in two eggs is roughly equivalent to the protein of three fish or lean meat. The digestibility of egg protein is also the highest among milk, pork, beef and rice. The content of methionine in eggs is particularly rich, but both cereals and beans lack this essential amino acid. Therefore, mixing eggs with cereals or beans can improve the bioavailability of the latter two. Eggs contain 100 g of fat 1 1.6 g, most of which are concentrated in yolk, and most of them are unsaturated fatty acids. Fat is emulsified and easily absorbed by the human body.