Technology Optimization of Clarifying Citrus Juice Beverage

Clarifying technology of combination of pectinase treatment and microfiltration inorganic membranes in citrus juice was studied.Experimental results showed that pectin in citrus juice was basically removed by using pectinase，then the dealt juice was filtered through inorganic membrane，it was clarified and transparent and debittered appropriately，transmittance was high to 96.3%.Most of nutrient composition and aroma was saved，and without any turbidity and precipitation during three months of storage.Reasonable operating parameters of microfiltration process was also confirmed，operating pressure was 0.2 MPa，temperature was 20～25 ℃，and membrane flux was 19 L（h·m2）.