METHOD FOR CLARIFYING PEACH JUICE USING ULTRAFILTRATION

摘要

PURPOSE: A method for clarifying the peach juice using ultrafiltration is provided, which produces the peach juice having improved turbidity. CONSTITUTION: The method for clarifying the peach juice comprises the steps of: passing the pectin-treated peach juice through the ultrafiltration module consisting of polysulfon hollow fiber having the fraction molecular weight of 30,000 dalton and membrane area of 0.8 m2 to produce the clear pear juice; during ultrafiltration process, determining the change of permeate flux at different time point to quantify the degree of membrane contaminant; determining membrane resistance, total membrane resistance and gel layer resistance during ultrafiltration process to prepare the standard data for the selection of optimal membrane according to the ultrafiltration conditions; and determining turbidity, sugar degree and titration acidity of the clear peach juice and comparing the above parameters of the clear peach juice with those of the peach juice before clarifying.