Protein (nutrient)

Amino acids are the building blocks of protein.

Amino acids are necessary nutrients. Present in every cell, they are also precursors to nucleic acids, co-enzymes, hormones, immune response, repair and other molecules essential for life.

Proteins are essential nutrients for the human body. They are one of the building blocks of body tissue, and can also serve as a fuel source. As a fuel, proteins contain 4 kcal (17 kJ) per gram, just like carbohydrates and unlike lipids, which contain 9 kcal (37 kJ) per gram. The most important aspect and defining characteristic of protein from a nutritional standpoint is its amino acid composition.

单词	Crude protein
释义	Crude protein 英语百科 Protein (nutrient) Proteins are essential nutrients for the human body. They are one of the building blocks of body tissue, and can also serve as a fuel source. As a fuel, proteins contain 4 kcal (17 kJ) per gram, just like carbohydrates and unlike lipids, which contain 9 kcal (37 kJ) per gram. The most important aspect and defining characteristic of protein from a nutritional standpoint is its amino acid composition.
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Crude protein

Protein (nutrient)