Taurine, carnosine, anserine, creatine, and 4-hydroxyproline are absent or negligible in plant-source foods.

“the title is important roles of dietary torine creatine carnosine anine and for hydroxyproline in human Nutritional Health in the abstract the author clearly states these five nutrients are highly abundant in beef have important physiological roles in antioxidative anti-inflammatory reactions as well as neurological muscular retinal immunological and cardiovascular function of particular note toine carnosine anserine and creatine are absent from plants and for hydroxyproline is negligible in many plant Source foods”