Researchers isolated and studied a new polysaccharide from the wood-decaying mushroom Spongipellis borealis. This polysaccharide is composed mainly of glucose, galactose, and mannose sugars and acts as a natural stabilizer for important enzymes used in biotechnology. When this polysaccharide is added to enzyme preparations, it significantly improves their stability and performance under various conditions, making it promising for industrial and medical applications.