Pectinase is an enzyme that breaks down pectin, a polysaccharide found in plant cell walls. It is useful because pectin is the jelly-like matrixes which helps cement plant cells together and in which other cell wall components, such as cellulose fibrils, are embedded. Therefore, pectinase enzymes are commonly used in processes involving the degradation of plant materials, such as speeding up the extraction of fruit juice from fruit, including apples, sapota, making of wine etc.