1. Sarcopenia
Sarcopenia is a syndrome caused by the continuous loss of skeletal muscle, strength and function decline, with the growth of age, skeletal muscle mass from 30 years of age to decline 0.1%~0.5% a year, significantly accelerated after 65 years of age, at the same time with the reduction of muscle strength, resulting in elderly people standing difficult, slow walking, easy to fall and fracture, sarcopenia can also affect organ function, it can lead to heart and lung failure and even death. Studies have shown that branch chain amino acids have a direct promoting effect on the growth and repair of skeletal muscle. Supplementing branch chain amino acids can effectively prevent or delay the occurrence of sarcopenia. Dietary supplementation of branch chain amino acids has also become the main intervention means for sarcopenia.

2. Recognize branched chain amino acid
Branched chain amino acid (BCAA) is the general name of three essential amino acids, leucine, valine and isoleucine. Branched chain amino acids fight fatigue, provide energy for the body in times of emergency, and more importantly, promote muscle synthesis.
BCAA is directly involved in the metabolic process of ketogenesis and glycogenesis in muscle, so that different types of muscle fibers in skeletal muscle can get more adequate energy. Branch chain amino acids play an irreplaceable role in the prevention of sarcopenia due to their higher oxidation function than other types of amino acids and their characteristics in muscle metabolism. Branched chain amino acids are commonly found in foods with high protein content, such as meat protein. Therefore, a reasonable diet is an important source of branched chain amino acids. However, for the elderly, slow metabolism and insufficient food intake will lead to the deficiency of branched amino acids in the body, so it is very necessary to supplement branched amino acids with foreign aid.

3. Yeast protein rich in branched chain amino acids
Yeast protein is a kind of high quality natural complete protein rich in branched chain amino acids. Because of its advantages of high raw price, green, safe and sustainable, yeast protein is widely used in common food and functional food, and it is a high-quality food raw material. Yeast protein has become a good external supplement for branched chain amino acids as a new force for intervention in reducing sarcopenia in the elderly.

