Sugar acids are organic compounds derived from sugars through oxidation. They contain a carboxylic acid group, which gives them acidic properties. Common examples include gluconic acid and galacturonic acid, both of which play important roles in biological processes and food chemistry. These acids are often found in fruits and vegetables, contributing to their flavor and nutritional value. Sugar acids can also be used in various applications, such as food preservation and as additives in the pharmaceutical industry. Their unique properties make them valuable in both health and industrial contexts.