Galacturonic acid is a type of sugar acid derived from the breakdown of pectin, a natural substance found in the cell walls of plants. It is a key component in the structure of pectin, which is commonly used as a gelling agent in food products like jams and jellies. This compound plays a significant role in plant biology, contributing to the rigidity and stability of plant tissues. In addition to its use in the food industry, galacturonic acid is also studied for its potential health benefits and applications in pharmaceuticals and biotechnology.