L-Methionine
Dietary Sources and Applications of L-Methionine Dietary Sources: Rich in animal-derived foods such as meat (beef, pork), fish, eggs, and dairy products (milk, cheese). Plant-based sources include soybeans, lentils, nuts (walnuts, almonds), and whole grains (oats, quinoa), though the bioavailability of methionine in plant foods is generally lower than in animal products. Food and Feed Additives: As a nutritional fortifier, L-Methionine is widely used in functional foods (e.g., protein powders, sports nutrition supplements, infant formulas) to balance amino acid profiles and improve nutritional value. In animal feed, it is a critical additive for poultry, swine, and aquatic animals—supplementation enhances growth performance, improves feed conversion efficiency, and increases lean meat percentage, as animals (especially monogastric species like chickens and pigs) have limited endogenous synthesis capacity. Pharmaceutical and Healthcare Applications: Used in pharmaceutical formulations to treat methionine deficiency-related disorders (e.g., liver dysfunction, malnutrition) and as a supportive therapy for liver diseases (by promoting liver detoxification and reducing oxidative stress). It is also incorporated into dietary supplements for antioxidant support, cardiovascular health maintenance, and sports performance enhancement (aiding muscle recovery and reducing exercise-induced oxidative damage).
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