Gluconolactone, an organic compound, is made from the oxidation of glucose into gluconic acid or its salts, which are purified, desalted, decolorized and concentrated. In the food industry used as coagulant, stabilizer, sour agent, preservative and preservative, is a multifunctional food additive. It can be used as curd coagulant, milk gelling agent, quality improver, acidifier and others.