Kasama sa protina ang vegan collagen at collagen ng hayop.Ang Vagan collagen (plant collagen) ay naglalaman ng soybean peptide, pea peptide, walnut peptide, atbp. Habang ang fish collagen, marine collagen peptide, marine fish oligopeptide, sea cucumber peptide, oyster peptide, bovine peptide, atbp, ay kabilang sa anim...
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