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× HomeNutritionMuscle and TrainingHealthRecipesWhat Is Whey Protein?FAQsGlossaryAbout

Alpha-Lactalbumin

What Is Alpha-Lactalbumin?

Alpha-lactalbumin (α-lactalbumin) is a protein found in the milk of almost all mammals[1]. It plays a crucial role in the synthesis of lactose[2], the primary sugar in milk. This protein is rich in essential amino acids and has high nutritional value, making it a key ingredient in infant formulas and dietary supplements. Additionally, alpha-lactalbumin has bioactive properties, contributing to immune system support and having potential anti-cancer[3] and anti-stress[4] effects. Due to its high tryptophan content, it can also promote better sleep[5] and mood regulation[6].

Alpha-Lactalbumin and Whey Protein

Alpha-lactalbumin is a significant component of whey protein[1], which is derived from milk during the cheese-making process. Whey protein is highly valued in the fitness and health industries for its exceptional protein quality and rapid digestibility. Within whey protein, alpha-lactalbumin stands out due to its high concentration of essential amino acids, particularly tryptophan and cysteine. These amino acids support muscle repair, growth, and overall protein synthesis in the body. Furthermore, the presence of alpha-lactalbumin in whey protein enhances its nutritional profile, making it an excellent choice for athletes, bodybuilders, and individuals seeking to improve their protein intake for various health benefits.


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