Pectinase is a complex enzyme consisting of pectolyase, pectozyme, and polygalacturonase. It is able to break down pectin, a kind of polysaccharide existing in plant cell wall. Pectin is It functions optimally at temperatures between 45 and 55 °C and pH between 3 and 6.5. Owing to this property, Pectinase is often used in processes demanding the degradation of plant materials such as speeding up the extraction process of fruit juice. More importantly, through breaking down pectin, which is an important diet component of human being, pectinase can positively affect the digestive system, maintain intestinal bacteria balance and promote colon health. Pectinase is also useful during the production of wine for aiding the extraction of flavours from the mash. Pectinase is also used for retting. It is usually obtained from the fermentation of fungi such as Aspergillus Niger.