1, broad bean, millet, pumpkin, wax gourd,
2. Edible fungi, such as Lentinus edodes, Pleurotus ostreatus and Auricularia auricula.
3. Collagen, such as pigskin, trotters and fish skin.
4, vegetables and cereals, peanuts, corn, bitter gourd
Extended data:
Compounds in which amino acids are linked to each other through amide bonds are called peptides. Peptides with an amino acid content of less than 10 are called oligopeptides, and those with an amino acid content of more than 10 are called polypeptides. A polypeptide with more than 50 amino acids is called protein.
Polypeptide can be extracted from a variety of animals and plants, such as walnuts, corn, peas, bitter gourd, mung beans, rice, peanuts, seafood, and wood frogs, deer and turtles in animals.
The amino group of one amino acid and the carboxyl group of another amino acid can be condensed into peptide, and the amide group formed is called peptide bond in protein chemistry. The molecule of amino acid is the smallest, and that of protein is the largest. Two or more amino acids are dehydrated and condensed to form several peptide bonds to form a peptide, and multiple peptides are folded in multiple stages to form a protein molecule. Protein is sometimes called a "polypeptide". Dipeptide is a protein fragment composed of two amino acids.
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